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특허 상세정보

Fuel cell having optimized pattern of electric resistance

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H01M-008/04   
미국특허분류(USC) 429/025; 429/030; 429/040
출원번호 US-0032606 (2001-10-19)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 3  인용 특허 : 12
초록

A fuel cell having a non-uniform electrical resistivity over the flow area of the cell. Resistance is higher in areas of the cell having locally low levels of hydrogen than in areas having locally high levels of hydrogen. Excess oxygen ion migration and buildup is suppressed in regions having low hydrogen concentration and is correspondingly increased in regions having a surfeit of hydrogen. Destructive oxidation of the anode is suppressed and a greater percentage of the hydrogen passed into the cell is consumed, thereby increasing electric output.

대표
청구항

What is claimed is: 1. A fuel cell for generating an electric current by combining hydrogen and oxygen wherein resistance to the flow of electric current through the cell is non-uniform over a flow area of the cell to regulate the flow of oxygen ions through any region of said cell in proportion to the partial pressure of hydrogen in said region, said fuel cell further comprising: a) an anode for reacting hydrogen ions with said oxygen ions, said hydrogen ions being derived from gaseous molecular hydrogen flowing in a first flow path through a first por...

이 특허에 인용된 특허 (12)

  1. Keegan, Kevin R.. Fluid distribution surface for solid oxide fuel cells. USP2003016509113.
  2. Keegan, Kevin Richard. Fluid distribution surface for solid oxide fuel cells. USP2003096613469.
  3. Simpkins, Haskell; LaBarge, William J.; Miller, Carl; Danley, Blaine R.. Gas diffusion mat for fuel cells. USP2003096613468.
  4. Carl Elmer Miller ; Bruno Depreter ; Haskell Simpkins ; Jean Joseph Botti. Integrated fuel reformation and thermal management system for solid oxide fuel cell systems. USP2002116485852.
  5. Faville, Michael T.; Grieve, M. James; Noetzel, John G.; Haltiner, Jr., Karl J.; DeMinco, Christopher M.; Keegan, Kevin R.; O'Brien, John F.; Mukerjee, Subhasish; Schumann, David R.; Shaffer, Steven . Integrated solid oxide fuel cell mechanization and method of using for transportation industry applications. USP2003056562496.
  6. Kevin R. Keegan. Method and apparatus for a fuel cell based fuel sensor. USP2002126500574.
  7. Botti Jean Joseph ; Grieve Malcolm James ; Miller Carl Elmer. Power generation system and method. USP2001056230494.
  8. Botti, Jean Joseph; Grieve, Malcolm James; Miller, Carl Elmer. Power generation system and method. USP2003086609582.
  9. Simpkins, Haskell; Thomas, Stephen M.; Labarge, William J.. Solid oxide fuel cell having a monolithic heat exchanger and method for managing thermal energy flow of the fuel cell. USP2003046551734.
  10. Kelly, Sean M.; Grover, Trevor T.. Solid-oxide fuel cell system having an integrated air supply system. USP2003086608463.
  11. Mukerjee, Subhasish; Grieve, M. James; Keegan, Kevin. Strategies for preventing anode oxidation. USP2003096620535.
  12. Kevin Keegan. Thermophotovoltaic insulation for a solid oxide fuel cell system. USP2002076423896.