| 摘要 |
The present invention relates to a micro cell system ( 1 ) with a membrane electrode assembly (MEA) ( 2 ) which in each case is covered on the cathode-side and anode-side with a current collector foil ( 3, 4 ). The current collector foils in each case comprise at least one gas-permeable opening ( 5, 6 ). On at least one of the current collector foils ( 3, 4 ) on a side facing the MEA ( 2 ) there are arranged diffusion channels ( 7, 8 ) These replace e.g. porous or fleece-like gas diffusion layers and thus alone ensure the micro-diffusion of gas on the MEA ( 2 ) The diffusion channels for this are connected to the gas-permeable opening ( 5, 6 ) for leading through gas, and the webs ( 9, 10 ) of the diffusion channels are provided with an electrically conductive surface ( 11, 12 ) for contacting the MEA.
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