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Army Health Care: Progress Made in Staffing and Monitoring Units that Provide Outpatient Case Management, but Additional Steps Needed (open access)

Army Health Care: Progress Made in Staffing and Monitoring Units that Provide Outpatient Case Management, but Additional Steps Needed

A letter report issued by the Government Accountability Office with an abstract that begins "In February 2007, a series of Washington Post articles disclosed problems at Walter Reed Army Medical Center, particularly with the management of servicemembers receiving outpatient care. In response, the Army established Warrior Transition Units (WTU) for servicemembers requiring complex case management. Each servicemember in a WTU is assigned to a Triad of Care--a primary care manager, a nurse case manager, and a squad leader--who provide case management services to ensure continuity of care. The Army established staff-to-servicemember ratios for each Triad of Care position. This report examines (1) the Army's ongoing efforts to staff WTU Triad of Care positions and (2) how the Army monitors the recovery process of WTU servicemembers. GAO reviewed WTU policies, analyzed Army staffing and monitoring data, interviewed Army officials, and visited five selected WTUs."
Date: April 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
U.S. Department of Agriculture: Internal Control Would Improve Accountability for Certain Centrally Provided (Greenbook) Programs (open access)

U.S. Department of Agriculture: Internal Control Would Improve Accountability for Certain Centrally Provided (Greenbook) Programs

A letter report issued by the Government Accountability Office with an abstract that begins "The Senate report accompanying the U.S. Department of Agriculture's (USDA) fiscal year 2008 appropriations expressed concern that USDA's Greenbook charges--the transfer of funds authority USDA used to charge the appropriations accounts of its agencies and staff offices for programs to centrally provide certain services--had grown excessively. USDA's Office of the Chief Financial Officer (OCFO) oversees Greenbook charges. The report directed GAO to review these charges and USDA to report on them. This report identifies the agencies and offices assessed Greenbook charges, the amounts of the charges, and the programs supported by Greenbook charges for fiscal years 1999 through 2009. It also (1) assesses how USDA selected programs and monitored Greenbook charges and (2) describes the benefits of the programs, as reported by USDA. GAO reviewed and assessed USDA budget and program documents and discussed processes with officials."
Date: October 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Acquisitions: Further Actions Needed to Address Weaknesses in DOD's Management of Professional and Management Support Contracts (open access)

Defense Acquisitions: Further Actions Needed to Address Weaknesses in DOD's Management of Professional and Management Support Contracts

A letter report issued by the Government Accountability Office with an abstract that begins "In fiscal year 2008, the Department of Defense (DOD) obligated $200 billion on services contracts, including $42 billion for professional and management services. The Government Accountability Office (GAO) previously identified weaknesses in DOD's management and oversight of services contracts, contributing to DOD contract management being on GAO's high-risk list. For selected professional and management support contracts, GAO was asked to examine (1) the extent to which DOD considered the risks of contractors closely supporting inherently governmental functions at key decision points, (2) how DOD implemented performance-based practices, (3) the extent to which DOD designated trained surveillance personnel, and (4) whether a new review process may improve DOD's management of such contracts. GAO reviewed federal regulations, agency policies and guidance, and analyzed seven acquisitions approved from 2004 to 2007 and 64 related task orders for services."
Date: November 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
State Children's Health Insurance Program: CMS Should Improve Efforts to Assess whether SCHIP Is Substituting for Private Insurance (open access)

State Children's Health Insurance Program: CMS Should Improve Efforts to Assess whether SCHIP Is Substituting for Private Insurance

A letter report issued by the Government Accountability Office with an abstract that begins "Congress created the State Children's Health Insurance Program (SCHIP) to reduce the number of uninsured children in low-income families that do not qualify for Medicaid. States have flexibility in structuring their SCHIP programs, and their income eligibility limits vary. Concerns have been raised that individuals might substitute SCHIP for private health insurance--known as crowd-out. GAO was asked to examine the Centers for Medicare & Medicaid Services' (CMS) and states' efforts to minimize crowd-out and determine whether it should be a concern. GAO examined (1) CMS's guidance to states for minimizing crowd-out and assessment of whether it should be a concern and (2) states' policies to minimize crowd-out and how they assess whether it should be a concern. To do the work, GAO reviewed federal laws and guidance, examined state annual reports, and interviewed CMS officials. GAO also interviewed SCHIP officials from nine states."
Date: February 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Drug Control: Better Coordination with the Department of Homeland Security and an Updated Accountability Framework can Further Enhance DEA's Efforts to Meet Post-9/11 Responsibilities (open access)

Drug Control: Better Coordination with the Department of Homeland Security and an Updated Accountability Framework can Further Enhance DEA's Efforts to Meet Post-9/11 Responsibilities

A letter report issued by the Government Accountability Office with an abstract that begins "Given the global context of the war on drugs--coupled with growing recognition since September 11, 2001 (9/11), of the nexus between drug trafficking and terrorism--the mission of the Drug Enforcement Administration (DEA) and efforts to forge effective interagency partnerships and coordination are increasingly important. GAO was asked to examine, in the context of the post-9/11 environment, DEA's (1) priorities, (2) interagency partnerships and coordination mechanisms, and (3) strategic plan and performance measures. GAO reviewed DEA policy, planning, and budget documents and visited 7 of DEA's 21 domestic field offices and 3 of its 7 regional offices abroad-- sites selected to reflect diverse drug-trafficking threats, among other factors. GAO also contacted other relevant federal agencies-- including U.S. Immigration and Customs Enforcement (ICE) and U.S. Customs and Border Protection (CBP)--and various state and local partner agencies."
Date: March 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Teacher Preparation: Multiple Federal Education Offices Support Teacher Preparation for Instructing Students with Disabilities and English Language Learners, but Systematic Departmentwide Coordination Could Enhance This Assistance (open access)

Teacher Preparation: Multiple Federal Education Offices Support Teacher Preparation for Instructing Students with Disabilities and English Language Learners, but Systematic Departmentwide Coordination Could Enhance This Assistance

A letter report issued by the Government Accountability Office with an abstract that begins "In 2005-2006, students with disabilities comprised 9 percent of the student population in the United States, and English language learners comprised about 10 percent. Many of these students spend a majority of their time in the general classroom setting in elementary and secondary schools. Most teachers are initially trained through teacher preparation programs at institutions of higher education. GAO was asked to examine (1) the extent to which teacher preparation programs require preparation for general classroom teachers to instruct these student subgroups; (2) the role selected states play in preparing general classroom teachers to instruct these student subgroups; and (3) funding and other assistance provided by the U.S. Department of Education (Education) to help general classroom teachers instruct these student subgroups. To address these issues, GAO conducted a nationally representative survey of teacher preparation programs and interviewed officials from state and local educational agencies in four states and Education."
Date: July 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Sovereign Wealth Funds: Laws Limiting Foreign Investment Affect Certain U.S. Assets and Agencies Have Various Enforcement Processes (open access)

Sovereign Wealth Funds: Laws Limiting Foreign Investment Affect Certain U.S. Assets and Agencies Have Various Enforcement Processes

A letter report issued by the Government Accountability Office with an abstract that begins "Foreign investors in U.S. companies or assets include individuals, companies, and government entities. One type of foreign investor that has been increasingly active in world markets is sovereign wealth funds (SWF), government-controlled funds that seek to invest in other countries. As the activities of these funds have grown they have been praised as providing valuable capital to world markets, but questions have been raised about their lack of transparency and the potential impact of their investments on recipient countries. GAO's second report on SWFs reviews (1) U.S. laws that specifically affect foreign investment, including that by SWFs, in the United States and (2) processes agencies use to enforce them. GAO reviewed policy statements, treaties, and U.S. laws, and interviewed and obtained information from agencies responsible for enforcing these laws. GAO also interviewed legal experts and organizations that track state foreign investment issues."
Date: May 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Management: Actions Needed to Address Stakeholder Concerns, Improve Interagency Collaboration, and Determine Full Costs Associated with the U.S. Africa Command (open access)

Defense Management: Actions Needed to Address Stakeholder Concerns, Improve Interagency Collaboration, and Determine Full Costs Associated with the U.S. Africa Command

A letter report issued by the Government Accountability Office with an abstract that begins "In February 2007, the President directed the Department of Defense (DOD) to establish the U.S. Africa Command (AFRICOM) to help strengthen U.S. security cooperation with African nations and bring peace and stability to the continent. For this review, GAO assessed DOD's (1) efforts to establish the command and communicate its mission, (2) progress in integrating personnel from other U.S. government agencies into AFRICOM, and (3) plans and costs for establishing a permanent headquarters and supporting offices in Africa. In assessing DOD's efforts to establish AFRICOM, GAO analyzed relevant documentation and obtained perspectives from the combatant commands, military services, Office of the Secretary of Defense, Department of State (State), U. S. Agency for International Development, and nongovernmental organizations."
Date: February 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Budget Issues: Electronic Processing of Non-IRS Collections Has Increased but Better Understanding of Cost Structure Is Needed (open access)

Budget Issues: Electronic Processing of Non-IRS Collections Has Increased but Better Understanding of Cost Structure Is Needed

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of the Treasury's Financial Management Service (FMS) collections program provides services to agencies to collect, deposit, and account for collections through a variety of methods. Electronic collection methods can reduce government borrowing costs and agency administrative costs, while improving compliance and security. The Government Accountability Office (GAO) was asked to identify (1) the extent to which agencies other than the Internal Revenue Service (IRS) use various collection methods, (2) ways to maximize the benefits of and overcome any barriers to agency use of the various collection methods, and (3) issues that FMS should consider in its plans to improve the efficiency and security of collections. GAO analyzed collections data, plans, and documents from FMS and five case-study agencies in the Departments of the Interior and Commerce that use a variety of collection methods, observed fee collection methods, and interviewed FMS and case-study agency officials. GAO also interviewed selected payer groups for case study agencies."
Date: November 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Department of Homeland Security: Actions Taken Toward Management Integration, but a Comprehensive Strategy Is Still Needed (open access)

Department of Homeland Security: Actions Taken Toward Management Integration, but a Comprehensive Strategy Is Still Needed

A letter report issued by the Government Accountability Office with an abstract that begins "Significant management challenges exist for the Department of Homeland Security (DHS) as it continues to integrate its varied management processes, policies, and systems in areas such as financial management and information technology. These activities are primarily led by the Under Secretary for Management (USM), department management chiefs, and management chiefs in DHS's seven components. The Government Accountability Office (GAO) was asked to examine: (1) the extent to which DHS has developed a comprehensive strategy for management integration that includes the characteristics recommended in GAO's 2005 report; (2) how DHS is implementing management integration; and (3) the extent to which the USM is holding the department and component management chiefs accountable for implementing management integration through reporting relationships. GAO reviewed DHS plans and interviewed management officials in DHS's headquarters and in all components."
Date: November 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Designated Federal Entities: Survey of Governance Practices and the Inspector General Role (open access)

Designated Federal Entities: Survey of Governance Practices and the Inspector General Role

A letter report issued by the Government Accountability Office with an abstract that begins "For entities that rely on others for funding, effective governance, accountability, and internal control are keys to maintaining trust and credibility. In recent years, corporate governance and accountability have received increased scrutiny and emphasis in the nonprofit, federal government, and public company sectors. Governance and accountability problems have also been identified at designated federal entities (DFE) such as the Smithsonian Institution, the Legal Services Corporation, and the Pension Benefit Guaranty Corporation. This report responds to a congressional request that GAO describe (1) the statutory structure of the governing bodies for each DFE organization and (2) the role of the inspectors general (IGs) in the governance structure. To accomplish this, GAO surveyed the DFE heads and IGs on governance issues and reviewed information from a variety of sources, including the IG Act and subsequent amendments; enabling legislation for the DFEs; and legislative and regulatory standards and requirements for financial reporting and internal control. GAO is not making specific recommendations in this report, but is providing this information for consideration in future efforts to update the governance of DFEs, oversee the entities and their IGs, and continue work …
Date: April 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Freedom of Information Act: DHS Has Taken Steps to Enhance Its Program, but Opportunities Exist to Improve Efficiency and Cost-Effectiveness (open access)

Freedom of Information Act: DHS Has Taken Steps to Enhance Its Program, but Opportunities Exist to Improve Efficiency and Cost-Effectiveness

A letter report issued by the Government Accountability Office with an abstract that begins "The Freedom of Information Act (FOIA) requires federal agencies to generally provide the public with access to government information. In December 2005, the President issued Executive Order 13392, to improve agencies' FOIA processing. The order required each agency to review its operations and develop plans for improvement. Since its establishment, the Department of Homeland Security (DHS) has accounted for a major and increasing portion of pending FOIA requests governmentwide. While it has reported achieving a notable reduction since 2006, DHS still possesses the largest backlog of overdue requests in the government. GAO was asked to determine (1) what key steps DHS has taken to enhance its FOIA program, and (2) what opportunities exist to improve the efficiency and cost-effectiveness of FOIA operations across the department. To do this, GAO reviewed DHS's improvement plan; examined policies, procedures, and other documentation; and interviewed agency officials."
Date: March 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Management: DOD Needs to Increase Attention on Fuel Demand Management at Forward-Deployed Locations (open access)

Defense Management: DOD Needs to Increase Attention on Fuel Demand Management at Forward-Deployed Locations

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) relies heavily on petroleum-based fuel to sustain its forward-deployed locations--particularly those that are not connected to local power grids. While weapon platforms require large amounts of fuel, DOD reports that the single largest battlefield fuel consumer is generators, which provide power for base support activities such as cooling, heating, and lighting. Transporting fuel to forward-deployed locations presents an enormous logistics burden and risk, including exposing fuel truck convoys to attack. GAO was asked to address DOD's (1) efforts to reduce fuel demand at forward-deployed locations and (2) approach to managing fuel demand at these locations. This review focused on locations within Central Command's area of responsibility. GAO visited DOD locations in Kuwait and Djibouti to learn about fuel reduction efforts and challenges facing these locations."
Date: February 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
School Meal Programs: Changes to Federal Agencies' Procedures Could Reduce Risk of School Children Consuming Recalled Food (open access)

School Meal Programs: Changes to Federal Agencies' Procedures Could Reduce Risk of School Children Consuming Recalled Food

A letter report issued by the Government Accountability Office with an abstract that begins "Over the past few years, several food recalls, such as for beef and peanut products, have affected schools. It is especially important that recalls affecting schools be carried out efficiently and effectively because young children have a higher risk of complications from food-borne illnesses. GAO was asked to determine how federal agencies (1) notified states and schools about food recalls, (2) advised states and schools about disposal and reimbursement of recalled food, and (3) ensured that recalls were being carried out effectively. To do this, GAO reviewed and analyzed relevant documents and interviewed federal and state officials, as well as officials from 23 school districts that had experience with at least one of four recent cases involving the safety of food in the school lunch program."
Date: August 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Federal Rulemaking: Improvements Needed to Monitoring and Evaluation of Rules Development as Well as to the Transparency of OMB Regulatory Reviews (open access)

Federal Rulemaking: Improvements Needed to Monitoring and Evaluation of Rules Development as Well as to the Transparency of OMB Regulatory Reviews

A letter report issued by the Government Accountability Office with an abstract that begins "Regulation is one of the principal tools that the government uses to implement public policy. As part of the rulemaking process federal agencies must comply with an increasing number of procedural and analytical requirements. GAO was asked to examine how broadly applicable rulemaking requirements cumulatively have affected (1) agencies' rulemaking processes, in particular including effects of requirements added to the process since 2003, and (2) transparency of the Office of Information and Regulatory Affairs (OIRA) regulatory review process. To address these objectives, GAO reviewed selected rules issued between January 2006 and May 2008 and associated dockets and also interviewed knowledgeable agency and OIRA officials."
Date: April 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Nonprescription Drugs: Considerations Regarding a Behind-the-Counter Drug Class (open access)

Nonprescription Drugs: Considerations Regarding a Behind-the-Counter Drug Class

A letter report issued by the Government Accountability Office with an abstract that begins "In the United States, most nonprescription drugs are available over-the-counter (OTC) in pharmacies and other stores. Experts have suggested that drug availability could be increased by establishing an additional class of nonprescription drugs that would be held behind the counter (BTC) but would require the intervention of a pharmacist before being dispensed; a similar class of drugs exists in many other countries. Although the Food and Drug Administration (FDA) has not developed a detailed proposal for a BTC drug class, it held a public meeting in 2007 to explore the public health implications of BTC drug availability. GAO was asked to update its 1995 report, Nonprescription Drugs: Value of a Pharmacist-Controlled Class Has Yet to Be Demonstrated (GAO/PEMD-95-12). Specifically, GAO is reporting on (1) arguments supporting and opposing a U.S. BTC drug class, (2) changes in drug availability in five countries since 1995 and the impact of restricted nonprescription classes on availability, and (3) issues important to the establishment of a BTC drug class. GAO reviewed documents and consulted with pharmaceutical experts. To examine drug availability across countries, GAO studied five countries it had reported on …
Date: February 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Drug Control: U.S. Counternarcotics Cooperation with Venezuela Has Declined (open access)

Drug Control: U.S. Counternarcotics Cooperation with Venezuela Has Declined

A letter report issued by the Government Accountability Office with an abstract that begins "Hundreds of metric tons of cocaine flow annually from South America toward the United States, threatening the security and well-being of U.S. citizens. Since 2000, the United States has provided about $8 billion to countries in the region to disrupt drug trafficking. Most of this assistance went to Colombia to reduce illicit drug production and improve security. In March 2009, the Department of State reported that Venezuela had become a major transit route for cocaine out of Colombia, with a more than fourfold increase in cocaine flow between 2004 and 2007. We determined (1) what is known about cocaine trafficking through Venezuela, (2) what is known about Venezuelan support for Colombian illegal armed groups, and (3) the status of U.S and Venezuelan counternarcotics cooperation since 2002. To address these objectives, we reviewed U.S. counternarcotics reports, assessments, and other documents regarding illicit drugs transiting Venezuela. We also traveled to Venezuela and Colombia to discuss these matters with U.S. and foreign government officials."
Date: July 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Defense Exports: Foreign Military Sales Program Needs Better Controls for Exported Items and Information for Oversight (open access)

Defense Exports: Foreign Military Sales Program Needs Better Controls for Exported Items and Information for Oversight

A letter report issued by the Government Accountability Office with an abstract that begins "In fiscal year 2008, the Foreign Military Sales (FMS) program sold over $36 billion dollars in defense articles and services to foreign governments. The Departments of State, Defense (DOD), and Homeland Security (DHS) all have a role in the FMS program. In 2003, GAO identified significant weaknesses in FMS control mechanisms for safeguarding defense articles transferred to foreign governments. In 2007, GAO designated the protection of technologies critical to U.S. national security a high-risk area. GAO was asked to (1) evaluate program changes State, DOD, and DHS have made since 2003 to ensure that unclassified defense articles transferred to foreign governments are authorized for shipment and monitored as required, and (2) determine what information DOD has to administer and oversee the FMS program. GAO conducted 16 case studies; analyzed U.S. port data and FMS agreements; reviewed program performance metrics; and interviewed cognizant officials."
Date: May 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Medicaid: Ongoing Federal Oversight of Payments to Offset Uncompensated Hospital Care Costs Is Warranted (open access)

Medicaid: Ongoing Federal Oversight of Payments to Offset Uncompensated Hospital Care Costs Is Warranted

A letter report issued by the Government Accountability Office with an abstract that begins "In addition to standard Medicaid payments, hospitals receive supplemental payments for uncompensated costs of care provided to uninsured and Medicaid patients. These supplemental payments are referred to as disproportionate share hospital (DSH) payments. Hospitals may also receive non-DSH supplemental payments. In fiscal year 2006, DSH payments totaled about $17 billion and non-DSH supplemental payments exceeded $6 billion. Hospitals' DSH payments are limited to their uncompensated care costs, that is, their costs for covered care less Medicaid and other payments. Concerns have been raised about the accuracy of DSH payment limits, particularly as states may estimate limits using data that are not audited or up to date. The Government Accountability Office (GAO) was asked to examine (1) how state DSH payments in 2006 compared to DSH payment limits, and (2) certain aspects of states' calculations of 2006 DSH payment limits. In selected states, GAO analyzed state Medicaid payment data and interviewed officials from the states and from the Centers for Medicare & Medicaid Services (CMS), the federal agency that oversees Medicaid."
Date: November 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
OSHA's Voluntary Protection Programs: Improved Oversight and Controls Would Better Ensure Program Quality (open access)

OSHA's Voluntary Protection Programs: Improved Oversight and Controls Would Better Ensure Program Quality

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Labor's Occupational Safety and Health Administration (OSHA) is responsible for ensuring workplace safety. OSHA has established a number of programs, including the Voluntary Protection Programs (VPP), that take a cooperative approach to obtaining compliance with safety and health regulations and OSHA's standards. OSHA established the VPP in 1982 to recognize worksites with exemplary safety and health programs. GAO was asked to review (1) the number and characteristics of employer worksites in the VPP and factors that have influenced growth, (2) the extent to which OSHA ensures that only qualified worksites participate in the VPP, and (3) the adequacy of OSHA's efforts to monitor performance and evaluate the effectiveness of the VPP. GAO analyzed OSHA's VPP data, reviewed a representative sample of VPP case files, and interviewed agency officials."
Date: May 20, 2009
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Intelligence Issues for Congress (open access)

Intelligence Issues for Congress

This report explores the various issues currently facing Congress in regards to intelligence and counterterrorism activities, including the Intelligence Reform and Terrorism Prevention Act (P.L. 108-458), signed in December 2004; the position of Director of National Intelligence (DNI), which that act created; the importance of collaborative efforts between various intelligence agencies to successfully carry out counterterrorism measures; and other pieces of legislation relevant to such matters.
Date: April 20, 2009
Creator: Best, Richard A., Jr.
System: The UNT Digital Library
The United Arab Emirates (UAE): Issues for U.S. Policy (open access)

The United Arab Emirates (UAE): Issues for U.S. Policy

This report describes the open economy and society of the United Arab Emirates (UAE), as well as U.S. concern over proliferation of advanced technology due to said open economy and the UAE's lax export controls. This report describes these issues in relation to a recently-signed U.S.-UAE civilian nuclear agreement. It also provides a general description of the UAE's government and political structure, as well as the effects of the recent global economic downturn on the UAE in general and on the city of Dubai in particular.
Date: April 20, 2009
Creator: Katzman, Kenneth
System: The UNT Digital Library
Final report SBIR Phase II. High current density,(Jc), low AC loss, low cost, Internal-Tin Superconductor (open access)

Final report SBIR Phase II. High current density,(Jc), low AC loss, low cost, Internal-Tin Superconductor

Final report of SBIR to develop an economical process that can produce the best material for high field magnets to be used in the next generation of accelerators
Date: January 20, 2009
Creator: Gregory, Eric
System: The UNT Digital Library
DOE Award No. DE-FC36-03GO13108 Novel Non-Precious Metal Catalysts for PEMFC: Catalyst Selection Through Molecular Modeling and Durability Studies Final Report (September 2003 – October 2008) (open access)

DOE Award No. DE-FC36-03GO13108 Novel Non-Precious Metal Catalysts for PEMFC: Catalyst Selection Through Molecular Modeling and Durability Studies Final Report (September 2003 – October 2008)

The objective of this project is to develop novel non-precious metal electrocatalysts for oxygen reduction reaction (ORR), and demonstrate the potential of the catalysts to perform at least as good as conventional Pt catalysts currently in use in polymer electrolyte membrane fuel cell (PEMFC) with a cost at least 50 % less than a target of 0.2 g (Pt loading)/peak kW and with durability > 2,000 h operation with less than 10 % power degradation. A novel nitrogen-modified carbon-based catalyst was obtained by modifying carbon black with nitrogen-containing organic precursor in the absence of transition metal precursor. The catalyst shows the onset potential of approximately 0.76 V (NHE) for ORR and the amount of H2O2 of approximately 3% at 0.5 V (NHE). Furthermore, a carbon composite catalyst was achieved through the high-temperature pyrolysis of the precursors of transition metal (Co and Fe) and nitrogen supported on the nitrogen-modified carbon-based catalyst, followed by chemical post-treatment. This catalyst showed an onset potential for ORR as high as 0.87 V (NHE), and generated less than 1 % of H2O2. The PEM fuel cell exhibited a current density of 2.3 A cm-2 at 0.2 V for a catalyst loading of 6.0 mg cm-2. No …
Date: February 20, 2009
Creator: Popov, Branko N.
System: The UNT Digital Library