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1. WO2011010961 - A MEMBRANE-LESS FUEL CELL

Publication Number WO/2011/010961
Publication Date 27.01.2011
International Application No. PCT/SE2010/050862
International Filing Date 20.07.2010
IPC
H01M 8/02 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
H01M 8/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
CPC
H01M 8/00
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
H01M 8/0265
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
0258characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
0265the reactant or coolant channels having varying cross sections
H01M 8/04097
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04082Arrangements for control of reactant parameters, e.g. pressure or concentration
04089of gaseous reactants
04097with recycling of the reactants
Y02E 60/50
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
30Hydrogen technology
50Fuel cells
Applicants
  • MÅNBAS ALPHA AB [SE]/[SE] (AllExceptUS)
  • STENMARK, Lars [SE]/[SE] (UsOnly)
Inventors
  • STENMARK, Lars
Agents
  • BRANN AB
Priority Data
0901010-920.07.2009SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A MEMBRANE-LESS FUEL CELL
(FR) PILE À COMBUSTIBLE SANS MEMBRANE
Abstract
(EN)
The present invention provides a membrane-less fuel cell that comprises a microfluidic channel system at an interface (5) between two wafers (21, 22) with a fuel gas channel (9) and an oxidiser gas channel (7) overlapping each other in order to make a laminar fuel gas flow in the fuel gas channel (9) to meet a laminar oxidiser fuel gas flow in the oxidiser gas channel (7) in a fuel cell cavity between two parallel electrodes (10, 11), whereby ions are exchanged by diffusion between said flows via a diffusion zone (8). Each of the fuel gas channel (9) and the oxidiser gas channel (7) comprises serially connected sub-cells (1, 2, 3), thereby forming an array of sub-cell cavities for ion exchange. The efficiency of the fuel cell is improved by having a sub-cell configuration that differs from one sub-cell to another. Further the fuel cell can easily be scaled up with maintained efficiency by having a plurality of gas channels forming a matrix of sub-cell cavities.
(FR)
La présente invention porte sur une pile à combustible sans membrane qui comprend un système de canaux microfluidiques au niveau d'une interface (5) entre deux tranches (21, 22), comprenant un canal de gaz combustible (9) et un canal de gaz oxydant (7) se chevauchant afin d'amener un écoulement de gaz combustible laminaire dans le canal de gaz combustible (9) à rejoindre un écoulement de gaz oxydant laminaire dans le canal de gaz oxydant (7) dans une cavité de pile à combustible entre deux électrodes parallèles (10, 11), ce par quoi des ions sont échangés par diffusion entre lesdits écoulements à travers une zone de diffusion (8). Chacun du canal de gaz combustible (9) et du canal de gaz oxydant (7) comprend des sous-cellules connectées en série (1, 2, 3), pour ainsi former un groupement de cavités de sous-cellule pour échange ionique. Le rendement de la pile à combustible est amélioré par le fait que la configuration de sous-cellule diffère d'une sous-cellule à une autre. En outre, la pile à combustible peut facilement être mise à l'échelle supérieure avec un rendement maintenu en amenant une pluralité de canaux de gaz à former une matrice de cavités de sous-cellule.
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