A fuel cell includes electrolyte electrode assembly and separators. An exhaust gas separation member is provided between the separators. The exhaust gas separation member includes an annular portion formed around an outer circumferential portion of the electrolyte electrode assembly, a seal portion
A fuel cell includes electrolyte electrode assembly and separators. An exhaust gas separation member is provided between the separators. The exhaust gas separation member includes an annular portion formed around an outer circumferential portion of the electrolyte electrode assembly, a seal portion fixed to the annular portion and sandwiched between the outer end of the electrolyte electrode assembly and one of the separators, and a stopper provided integrally with the annular portion and fixedly engaged with the other separator.
대표청구항▼
1. A fuel cell formed by stacking an electrolyte electrode assembly and separators, said electrolyte electrode assembly including an anode a cathode and an electrolyte interposed between said anode and said cathode, said fuel cell comprising: an exhaust gas separation member provided between said se
1. A fuel cell formed by stacking an electrolyte electrode assembly and separators, said electrolyte electrode assembly including an anode a cathode and an electrolyte interposed between said anode and said cathode, said fuel cell comprising: an exhaust gas separation member provided between said separators, wherein said exhaust gas separation member comprises:an annular portion formed around an outer circumferential portion of said electrolyte electrode assembly, and having an opening for discharging a first exhaust gas which has been consumed at one electrode of said anode and said cathode to an outside of said electrolyte electrode assembly; anda seal portion provided at an end of said annular portion for preventing the first exhaust gas from entering another electrode of said anode and said cathode. 2. A fuel cell according to claim 1, wherein said exhaust gas separation member has elastic properties by combination of said annular portion and said seal portion. 3. A fuel cell formed by stacking an electrolyte electrode assembly and separators, said electrolyte electrode assembly including an anode a cathode, and an electrolyte interposed between said anode and said cathode, said fuel cell comprising: an exhaust gas separation member provided between said separators, wherein said exhaust gas separation member comprises:an annular portion formed around an outer circumferential portion of said electrolyte electrode assembly, and having an opening for discharging a first exhaust gas which has been consumed at one electrode of said anode and said cathode to an outside of said electrolyte electrode assembly;a seal portion fixed to said annular portion for preventing the first exhaust gas from entering another electrode of said anode and said cathode; anda stopper provided at an end of said annular portion for allowing said exhaust gas separation member to be fixedly engaged with said separator adjacent to the one electrode. 4. A fuel cell according to claim 3, wherein said annular portion is made of material having high rigidity in comparison with material of said seal portion. 5. A fuel cell according to claim 3, wherein an insulator interposed between said stopper and said separator. 6. A fuel cell according to claim 3, wherein said exhaust gas separation member has elastic properties by combination of said annular portion, said seal portion, and the stopper. 7. A fuel cell according to claim 3, wherein densification treatment is applied to an outer circumferential surface of the other electrode for preventing leakage of a second exhaust gas which has been consumed at the other electrode. 8. A fuel cell according to claim 3, wherein said separator comprises: a fuel gas channel for supplying the fuel gas from a central region to an outer circumferential region on a surface of said anode; andan oxygen-containing gas channel for supplying an oxygen-containing gas from a central region to an outer circumferential region on a surface of said cathode. 9. A fuel cell according to claim 8, wherein a chamber, where the first exhaust gas can be retained, is formed among said annular portion, said seal portion, and the outer circumferential surface of said electrolyte electrode assembly. 10. A fuel cell according to claim 3, wherein said seal portion is provided between an outer end of said electrolyte electrode assembly and said annular portion, and the thickness of said seal portion is small in correspondence with the outer end. 11. A fuel cell according to claim 3, wherein said stopper is fixedly engaged with said separator with elasticity. 12. A fuel cell according to claim 3, wherein said stopper fixedly engaged with said separator a crimping process. 13. A fuel cell according to claim 3, wherein said stopper is fixedly engaged with said separator such that said stopper is overlapped with a curved end of said separator. 14. A fuel cell formed by stacking an electrolyte electrode assembly and separators, said electrolyte electrode assembly including an anode a cathode, and an electrolyte interposed between said anode and said cathode, said fuel cell comprising: an exhaust gas separation member provided between said separators, wherein said exhaust gas separation member comprises:an annular portion formed around an outer circumferential portion of said electrolyte electrode assembly, and having an opening for discharging a first exhaust gas which has been consumed at one electrode of said anode and said cathode to an outside of said electrolyte electrode assembly;a seal portion formed integrally with said annular portion for preventing the first exhaust gas from entering another electrode of said anode and said cathode; anda stopper provided at an end of said annular portion for allowing said exhaust gas separation member to be fixedly engaged with said separator adjacent to the one electrode. 15. A fuel cell according to claim 14, wherein said exhaust gas separation member has elastic properties by combination of said annular portion, said seal portion, and the stopper. 16. A fuel cell according to claim 14, wherein densification treatment is applied to an outer circumferential surface of the other electrode for preventing leakage of a second exhaust gas which has been consumed at the other electrode. 17. A fuel cell according to claim 14, wherein said separator comprises: a fuel gas channel for supplying the fuel gas from a central region to an outer circumferential region on a surface of said anode; andan oxygen-containing gas channel for supplying an oxygen-containing gas from a central region to an outer circumferential region on a surface of said cathode. 18. A fuel cell according to claim 17, wherein a chamber, where the first exhaust gas can be retained, is formed among said annular portion, said seal portion, and the outer circumferential surface of said electrolyte electrode assembly. 19. A fuel cell according to claim 14, wherein said seal portion is provided between an outer end of said electrolyte electrode assembly and said annular portion, and the thickness of said seal portion is small in correspondence with the outer end. 20. A fuel cell according to claim 14, wherein said stopper is fixedly engaged with said separator with elasticity. 21. A fuel cell according to claim 14, wherein said stopper is fixedly engaged with said separator by a crimping process. 22. A fuel cell according to claim 14, wherein said stopper is fixedly engaged with said separator such that said stopper is overlapped with a curved end of said separator. 23. A fuel cell according to claim 14, wherein an insulator is interposed between said stopper and said separator.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (4)
Tsunoda, Tadashi; Izumi, Masahiko; Yamaguchi, Nozomu; Dan, Koji, Fuel cell and fuel cell stack.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.