Method for regeneration of fuel cells and fuel cell systems

A fuel cell and membrane electrode technology, which is applied in the direction of fuel cells, fuel cell control, fuel cell additives, etc., can solve the problems of efficiency decline and achieve the effect of flexible and automatic regeneration

Active Publication Date: 2018-09-14
VOLKSWAGEN AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the system is operated, for example, with a hydrocarbon, during reforming deposits and impurities are generated in the anode that lead to a loss of efficiency

Method used

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  • Method for regeneration of fuel cells and fuel cell systems
  • Method for regeneration of fuel cells and fuel cell systems
  • Method for regeneration of fuel cells and fuel cell systems

Examples

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Embodiment Construction

[0029] exist figure 1 , to align the method, a fuel cell 10 is shown comprising a plurality of individual cells 12 connected in series, at figure 2 One of the individual batteries is further shown in . Each individual cell 12 has a membrane electrode unit 14 (MEA), each comprising a proton-conducting polymer electrolyte membrane 16, and two electrodes sandwiched to the two outer surfaces of the membrane 18, 20, namely the anode 18 and the cathode 20. Furthermore, the individual cells 12 have a bipolar plate 22 arranged between two MEAs 14 , whose two sides are in conductive contact with the MEA composition and serve for the introduction of process gas and the removal of product water. In addition, they allow the individual MEAs 14 to be densely separated from each other in the fuel cell stack 10 . The bipolar plates 22 have a plurality of internal supply channels for the introduction of reaction gases (hydrogen in the case of the anode and oxygen or air in the case of the ...

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PUM

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Abstract

The invention is entitled method for fuel cell and fuel cell system regeneration and relates to a method for fuel cell regeneration. The fuel cell includes a membrane electrode unit having an anode and a cathode separated by a membrane and a circuit configured to conductively connect the anode and the cathode. The invention further relates to a fuel cell system which is arranged for carrying out such a method. According to the present invention, oxidized half-cell potential is attached to the fuel cell based on measured and / or calculated degree of contamination (k) of harmful substances contained in membrane electrode unit. In this way, the anode is exposed to an oxidant-containing environment.

Description

technical field [0001] The invention relates to a method for regeneration of a fuel cell comprising a membrane electrode unit having an anode or a cathode separated by a membrane and comprising an electrical circuit arranged such that the anode and cathode An electrically conductive connection and relates to a fuel cell system which is designed to carry out such a method. Background technique [0002] Fuel cells use the chemical conversion of fuel to water with the help of oxygen to produce electricity. For this purpose, a fuel cell contains a so-called membrane electrode assembly (MEA) as a core component, which is an ion-conducting, in particular proton-conducting, membrane and one each arranged on both sides of the membrane. Composition of electrodes (anode and cathode). Furthermore, a gas diffusion layer (GDL) can be arranged on both sides of the membrane electrode unit on the side of the electrode facing away from the membrane. Typically, a fuel cell is constructed b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M8/04298H01M8/04313
CPCH01M8/04298H01M8/04313H01M10/4242H01M8/04225H01M8/04302H01M8/04664H01M8/184Y02E60/10Y02E60/50
Inventor M·R·基尔希霍夫L·施密特G·赫布纳S·基尔施
Owner VOLKSWAGEN AG
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