Electrochemical generator and method for its utilisation
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-008/00
H01M-008/04
H01M-002/00
출원번호
US-0536561
(2003-12-15)
등록번호
US-7396602
(2008-07-08)
우선권정보
IT-MI2002A2637(2002-12-16)
국제출원번호
PCT/EP03/014264
(2003-12-15)
§371/§102 date
20050525
(20050525)
국제공개번호
WO04/055926
(2004-07-01)
발명자
/ 주소
Toro,Antonino
출원인 / 주소
Nuvera Fuel Cells Europe S.R.L.
대리인 / 주소
Finnegan Henderson Farabow Garrett & Dunner, LLP
인용정보
피인용 횟수 :
1인용 특허 :
1
초록▼
An electrochemical generator consisting of an alternation of membrane fuel cells and cooling cells with internal circulation of liquid water is described. The fuel cells are fed in at least one of the two compartments, anodic or cathodic, with dry gas, which is humidified through the passage of wate
An electrochemical generator consisting of an alternation of membrane fuel cells and cooling cells with internal circulation of liquid water is described. The fuel cells are fed in at least one of the two compartments, anodic or cathodic, with dry gas, which is humidified through the passage of water coming from the adjacent cooling cell through a metal porous separating wall. The permeated liquid water contributes to the withdrawal of the heat of reaction by evaporating at least in part inside the fuel cells.
대표청구항▼
The invention claimed is: 1. An electrochemical generator, comprising: at least one membrane fuel cell and at least one cooling cell interposed between two bipolar plates, wherein said at least one membrane fuel cell comprises a cathode compartment having a reticulated reactant gas distributor and
The invention claimed is: 1. An electrochemical generator, comprising: at least one membrane fuel cell and at least one cooling cell interposed between two bipolar plates, wherein said at least one membrane fuel cell comprises a cathode compartment having a reticulated reactant gas distributor and an anode compartment having a reticulated reactant gas distributor, wherein at least one gaseous reactant passes through said anode compartment and at least one other gaseous reactant passes through said cathode compartment, said at least one cooling cell is interposed between said at least one membrane fuel cell and one of the bipolar plates, and is separated from said cathode compartment or said anode compartment of said at least one membrane fuel cell by a porous wall, and liquid water passes from said at least one cooling cell to said anode or cathode compartment of said at least one membrane fuel cell across said porous wall. 2. The generator of claim 1, wherein said at least one cooling cell is adjacent to either said anode compartment or said cathode compartment of said at least one membrane fuel cell. 3. The generator of claim 1, wherein said porous wall comprises a sintered metallic material or a metal fiber interlacement, optionally supported on a metal mesh or on an expanded or perforated sheet. 4. The generator of claim 1, wherein said porous wall comprises a peripheral sealing frame. 5. The generator of claim 1, wherein at least one side of said porous wall is coated with a hydrophobic material. 6. The generator of claim 5, wherein said hydrophobic material is a fluorinated polymer. 7. The generator of claim 1, wherein said reticulated gaseous reactant distributor has a fluid passage resistance substantially lower than that of said porous wall. 8. The generator of claim 1, wherein said reticulated gaseous reactant distributor is a piece of metal sponge, a piece of metal foam, a mesh, an expanded or perforated sheet, or a combination thereof. 9. The generator of claim 1, wherein said reticulated gaseous reactant distributor is made of metal. 10. The generator of claim 9, wherein said metal is selected from the group consisting of stainless steel, nickel, and nickel alloys. 11. The generator of claim 1, wherein said at least one cooling cell comprises a conductive reticulated element. 12. The generator of claim 11, wherein said conductive reticulated element of said at least one cooling cell has a fluid passage resistance substantially lower than that of said porous wall. 13. The generator of claim 11, wherein said reticulated gaseous reactant distributor is a piece of metal sponge, a piece of foam, a piece of mesh, an expanded or perforated sheet, or a combination thereof. 14. The generator of claim 11, wherein said conductive reticulated element of said at least one cooling cell is metallic, and optionally consisting of stainless steel, nickel or nickel alloy. 15. A method for generating direct electric current using said electrochemical generator of claim 1, comprising: supplying a water flow to said at least one cooling cell at a pressure higher than that of said at least one gaseous reactant in said anode or said cathode compartment said at least one cooling cell is adjacent to; and allowing said water flow to permeate from said at least one cooling cell to said adjacent anode or cathode compartment in said membrane fuel cell across said porous wall and humidifies said paseous reactant therein. 16. The method of claim 15, wherein the gaseous reactant humidified by said flow of water permeating across said porous wall is oxygen. 17. The method of claim 15, wherein both gaseous reactants are humidified by said flow of water permeating across said porous wall. 18. The method of claim 15, wherein said flow of water is preheated.
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이 특허에 인용된 특허 (1)
Reiser Carl A. (Glastonbury CT) Sawyer Richard D. (Canton CT), Solid polymer electrolyte fuel cell stack water management system.
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