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Method for treating a fuel cell membrane, a fuel cell, and a conditioned fuel cell membrane

A fuel cell membrane, fuel cell technology, applied in the direction of fuel cells, solid electrolyte fuel cells, circuits, etc., can solve the problems of reducing, indicating that the adjustment time does not appear, etc.

Inactive Publication Date: 2008-06-18
RELION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these previous attempts have not appeared to be successful as the available studies appear to indicate that conditioning times do not appear to be substantially reduced by using a moist gas source as opposed to a substantially dry hydrogen fuel source

Method used

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  • Method for treating a fuel cell membrane, a fuel cell, and a conditioned fuel cell membrane
  • Method for treating a fuel cell membrane, a fuel cell, and a conditioned fuel cell membrane
  • Method for treating a fuel cell membrane, a fuel cell, and a conditioned fuel cell membrane

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Embodiment Construction

[0018] The present invention is best understood by studying Figures 1-5 separately. Referring now to FIG. 1 , the method of the present invention is generally indicated by numeral 10 and begins with the first step of providing an ion exchange fuel cell membrane generally indicated by numeral 11 which produces no current output. This assembly 11 is often referred to as a Membrane Electrode Diffusion Assembly (MEDA) and is housed within or integral to a fuel cell stack, device or stack such as seen in FIGS. 2, 3 and 4, respectively, and its will be discussed in more detail below. However, for the purposes of this discussion, the fuel cell membranes or MEDAs that will be disclosed hereinafter can be used in fuel cell devices that operate at temperatures less than about 300°C. Accordingly, these assemblies are not useful in solid oxide fuel cell designs or other fuel cells that typically operate at temperatures greater than about 300°C. As will be appreciated from a study of Fig...

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Abstract

A method for treating a fuel cell membrane is described and which includes providing a fuel cell membrane which is not generating an electrical current output; and exposing the fuel cell membrane which is not generating an electrical current output to a nonambient environment which is effective to render the fuel cell membrane substantially immediately operable to generate at least about 80% of the maximum sustainable electrical power output of the fuel cell membrane when it is supplied with a source of fuel and an oxidant. The present invention also describes a fuel cell produced by the same methodology and a conditioned fuel cell membrane.

Description

technical field [0001] The present invention relates to a method for treating a fuel cell membrane, a fuel cell resulting from the disclosed method, and a conditioned fuel cell membrane, and more particularly to a fuel cell membrane that can be effectively rendered A method operable substantially immediately upon supply of fuel source and oxidant to produce at least 80% of the maximum sustainable electrical output of said fuel cell membrane. Background technique [0002] A fuel cell is a device that converts chemical energy into electrical energy readily by the reaction of a gas with a suitable oxidant source. For example, in a proton exchange membrane fuel cell, the fuel gas is typically hydrogen and the oxidant source comprises oxygen (or more typically ambient air). In this type of fuel cell, a membrane electrode diffusion layer assembly is provided and includes a solid polymer electrolyte having opposing anode and cathode faces. Appropriate electrodes are provided on o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10
CPCH01M8/04126Y02E60/521H01M8/1004Y02E60/50
Inventor 迈克尔·戴维斯威廉·A·富格利万德戴维·R·洛特
Owner RELION INC