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Coated aluminum bipolar plate for fuel cell applications

A technology for fuel cells and aluminum substrates, which can be used in fuel cell parts, fuel cells, battery electrodes, etc., and can solve problems such as easy corrosion.

Inactive Publication Date: 2018-01-16
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this regard, some prior art aluminum flow field plates are still prone to corrosion due to the presence of inhomogeneities and pinholes

Method used

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  • Coated aluminum bipolar plate for fuel cell applications
  • Coated aluminum bipolar plate for fuel cell applications
  • Coated aluminum bipolar plate for fuel cell applications

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Embodiment Construction

[0015] 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 practicing the invention. The drawings are not necessarily to scale. It is to be understood, however, that the disclosed embodiments are merely exemplary of the invention that may 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 various uses of the invention.

[0016] Except in the examples, or where otherwise expressly indicated, all numerical quantities in this specification expressing amounts of materials or reaction conditions and / or uses are to be understood as modified by the word "about" in describing the broadest scope of the invention. It is generally preferre...

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Abstract

A fuel cell flow field plate includes an aluminum substrate plate having a first side and a second side wherein the first side of the aluminum substrate plate defines a plurality of channels for transporting a first fuel cell reactant gas. The flow field plate also includes a first metal interlayer deposited on the first side of the aluminum substrate plate, a second metal interlayer deposited onthe second side of the aluminum substrate plate, a first amorphous carbon layer deposited on the first metal interlayer, and a second amorphous carbon layer deposited on the second metal interlayer. The first amorphous carbon layer and second amorphous carbon layer each independently have a density greater than or equal to 1.2 g / cc.

Description

technical field [0001] In at least one aspect, the invention relates to flow field plates to be incorporated into fuel cells and fuel cell stacks. Background technique [0002] In many applications, fuel cells are used as a power source. In particular, fuel cells are proposed for use in automobiles to replace internal combustion engines. Common fuel cell designs use a solid polymer electrolyte ("SPE") membrane or a proton exchange membrane ("PEM") to provide ion transport between the anode and cathode. [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 in pure form (O 2 ) or air (O 2 and N 2 mixture). PEM fuel cells typically have a membrane electrode assembly ("MEA") in which a solid polymer membrane has an anode catalyst on one face and a cathode catalyst on the opposite face. The anode and cathode catalyst layers of a typical PEM fuel cell are usually th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0228H01M8/0208H01M8/0213H01M4/86
CPCH01M8/0208H01M8/0228Y02E60/50H01M8/1007H01M8/0258H01M8/1004H01M8/1018
Inventor S·卡姆帕里B·阿克什曼安E·迪科科
Owner GM GLOBAL TECH OPERATIONS LLC