Method and apparatus for enhancing power density of direct liquid fuel cells
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-008/22
H01M-008/04
H01M-008/10
출원번호
US-0334929
(2011-12-22)
등록번호
US-9065095
(2015-06-23)
발명자
/ 주소
Markoski, Larry J.
Natarajan, Dilip
출원인 / 주소
INI Power Systems, Inc.
대리인 / 주소
Evan Law Group LLC
인용정보
피인용 횟수 :
0인용 특허 :
61
초록▼
A fuel cell includes a direct liquid fuel cell and a humidifier. The direct liquid fuel cell includes an air intake channel for providing oxidant to the fuel cell and an exhaust channel for exhausting depleted oxidant. The humidifier forms a fluid connection between the air intake channel and the ex
A fuel cell includes a direct liquid fuel cell and a humidifier. The direct liquid fuel cell includes an air intake channel for providing oxidant to the fuel cell and an exhaust channel for exhausting depleted oxidant. The humidifier forms a fluid connection between the air intake channel and the exhaust channel.
대표청구항▼
1. A fuel cell, comprising: (a) a direct liquid fuel cell, comprising: (i) an anode,(ii) a cathode,(iii) an electrolyte, between the anode and the cathode,(iv) a fuel inlet, in contact with the anode, for providing fuel to the anode;(v) a fuel outlet, in contact with the anode and in fluid connectio
1. A fuel cell, comprising: (a) a direct liquid fuel cell, comprising: (i) an anode,(ii) a cathode,(iii) an electrolyte, between the anode and the cathode,(iv) a fuel inlet, in contact with the anode, for providing fuel to the anode;(v) a fuel outlet, in contact with the anode and in fluid connection with the fuel inlet, for removing depleted fuel and/or product gases from the anode;(vi) an air inlet, in contact with the cathode, for providing oxidant to the cathode; and(vii) a air outlet, in contact with the cathode and in fluid connection with the air inlet, for exhausting depleted oxidant and product gases/liquids from the cathode; and(b) a humidifier;wherein the humidifier forms a fluid connection between the air intake channel and the air outlet; andthe humidifier transfers fuel from the air outlet to the air inlet. 2. The fuel cell of claim 1, wherein the direct liquid fuel cell comprises a direct methanol fuel cell. 3. The fuel cell of claim 1, wherein the humidifier is a cross-flow humidifier. 4. The fuel cell of claim 1, wherein the humidifier has a parallel flow field design. 5. The fuel cell of claim 1, wherein the direct liquid fuel cell is capable of generating at least 100 watts. 6. The fuel cell of claim 1, wherein the direct liquid fuel cell is capable of generating at least 300 watts. 7. The fuel cell of claim 1, wherein the air stoichiometry of the fuel cell is from 1.0 to 3.0. 8. The fuel cell of claim 1, wherein the air stoichiometry of the fuel cell is from 1.0 to 2.0. 9. The fuel cell of claim 1, wherein the air stoichiometry of the fuel cell is from 1.0 to 1.7. 10. The fuel cell of claim 1, wherein the fuel comprises methanol. 11. The fuel cell of claim 1, wherein the fuel comprises sodium borohydride or potassium borohydride. 12. The fuel cell of claim 1, wherein the fuel cell produces a current density of at least 50 mA/cm2 at an air stoichiometry of at most 3.0. 13. The fuel cell of claim 1, wherein the fuel cell produces a current density of at least 100 mA/cm2 at an air stoichiometry of at most 3.0. 14. The fuel cell of claim 1, wherein the fuel cell produces a current density of at least 150 mA/cm2 at an air stoichiometry of at most 3.0. 15. The fuel cell of claim 1, wherein the fuel cell produces a current density of at least 200 mA/cm2 at an air stoichiometry of at most 3.0. 16. The fuel cell of claim 1, wherein the humidifier transfers water from the air outlet to the air inlet. 17. The fuel cell of claim 16, wherein at least a portion of the water is in a gaseous phase. 18. The fuel cell of claim 1, wherein the humidifier transfers heat from the air outlet to the air inlet. 19. The fuel cell of claim 1, wherein the direct liquid fuel cell is capable of generating at least 50 watts.
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