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Fuel cell durability through oxide supported precious metals in membrane

A fuel cell, oxide carrier technology, used in fuel cells, transportation fuel cell technology, power system fuel cells, etc.

Inactive Publication Date: 2012-05-23
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This high durability requirement poses a challenge for polymer electrolyte membrane materials considered for fuel cells

Method used

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  • Fuel cell durability through oxide supported precious metals in membrane
  • Fuel cell durability through oxide supported precious metals in membrane
  • Fuel cell durability through oxide supported precious metals in membrane

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Embodiment Construction

[0056] Reference will now be made in detail to presently preferred compositions, embodiments and methods of the invention, which constitute the best modes presently known to the inventors for carrying out the invention. The figures are not necessarily drawn to scale. It is to be understood, however, that the disclosed embodiments are merely exemplary of the invention that can be embodied in various and alternative forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for any aspect of the invention and / or as a representative basis for teaching one skilled in the art to variously employ the invention.

[0057] Except in the examples, or where otherwise expressly indicated, all numerical quantities in this specification expressing amounts of materials or conditions of reaction and / or use are to be understood as modified by the word "about" in describing the invention in its broadest scope. Practice within...

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Abstract

The present invention relates to fuel cell durability through oxide supported precious metals in membrane. A fuel cell includes an anode, a cathode, and an ion conducting membrane interposed between the anode and cathode. The ion conducting membrane includes a base layer that has an ion conducting polymer and additive layer that has a metal supported on an oxide support, the oxide support scavenging hydroxyl radicals formed during fuel cell operation.

Description

technical field [0001] The present invention relates to fuel cell stacks having improved resistance to chemical degradation. Background technique [0002] Fuel cells are used as power sources in many applications. In particular, fuel cells are proposed to replace internal combustion engines in automobiles. Commonly used fuel cell designs use solid polymer electrolyte ("SPE") membranes or proton exchange membranes ("PEM") to provide ion transfer between the anode and cathode. Fuel cells produce electricity by processing reactants, for example, through the oxidation and reduction of hydrogen and oxygen. [0003] In a proton exchange membrane type fuel cell, hydrogen is supplied to an anode as a fuel, and oxygen is supplied to a cathode as an oxidant. Oxygen can be pure oxygen (O 2 ) or air (O 2 and N 2 mixture) form. Typically, a PEM fuel cell has a membrane electrode assembly ("MEA") in which a solid polymer membrane has an anode catalyst on one face and a cathode cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M4/88
CPCH01M4/8828Y02T90/32H01M2250/20H01M4/88Y02E60/521H01M4/925H01M8/1004Y02E60/50Y02T90/40
Inventor R.蒋J.张Z.刘F.科姆斯C.S.吉特尔曼
Owner GM GLOBAL TECH OPERATIONS LLC