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Membrane electrode assembly and methods of making the same

A membrane electrode assembly and anode technology, applied in the direction of battery components, electrical components, battery electrodes, etc., can solve the problem of keeping the components together, and achieve the effect of good operating performance

Inactive Publication Date: 2016-08-10
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, even if the bond between the microporous layer and the catalyst is relatively strong, there is the possibility that the bond between the microporous layer and the fibers of the gas diffusion layer will not be sufficient to hold the part together

Method used

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  • Membrane electrode assembly and methods of making the same
  • Membrane electrode assembly and methods of making the same
  • Membrane electrode assembly and methods of making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] The following procedure is used to remove the microporous layer of the gas diffusion layer and add adhesive for diffusion layer attachment. see Figure 3A , the microporous layer 399 is removed adjacent to the gas diffusion layer web 399 . Adhesive transfer tape (obtained from 3M Company, St. Paul, MN under the trade designation "Scotch ATG 700 Adhesive Transfer Tape" (Scotch ATG 700 Adhesive Transfer Tape) ") was used and a conventional Tape dividers 362A, 362B provide channels 303A, 303B to facilitate removal of a portion of microporous layer 399 from gas diffusion layer 313 . The removed microporous layer material is rewound or wound into the waste liner collectors 361A, 361B within the adhesive transfer tape.

[0111] see Figure 3B , ethylene ethyl acrylate hot melt films 363A, 363B (available under the trade designation "DOW EA102" from Dow Chemical Co., Midland, Mich. ., Midland, MI) resin preparation) was used as input hot melt adhesive tape filling channels...

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Abstract

Membrane electrode assembly comprising a first gas diffusion layer having a first microporous layer on a major surface thereof, wherein the first microporous layer has a major surface, wherein the major surface of the first microporous layer has discontinuous areas therein substantially free of microporous material, and wherein at least a portion of the first discontinuous areas have adhesive therein; and methods for making the same. Membrane electrode assemblies described herein are useful, for example, in fuel cells.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application 61 / 917,135, filed December 17, 2013, the disclosure of which is incorporated herein by reference in its entirety. Background technique [0003] A fuel cell membrane electrode assembly (MEA) typically includes a carbon paper gas diffusion layer (GDL) bonded, coated or laminated to the anode catalyst, cathode catalyst and membrane layers. The five-layer construction can be prepared in several ways, however the most common is to attach the catalyst to the membrane to form a catalyst coated membrane (CCM). A gas diffusion layer with a microporous layer (MPL) is then attached to the catalyst coated membrane to form a membrane electrode assembly. [0004] The bond between the catalyst and the microporous layer side of the gas diffusion layer is often the weak link in the construction in terms of advantageously securing the gas diffusion layer and the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M2/14H01M4/88
CPCH01M4/881H01M8/0234H01M8/0247H01M8/1004Y02E60/50H01M8/0258H01M8/0271
Inventor 丹尼尔·M·皮尔庞特约瑟夫·W·弗里斯克埃里克·J·汉森
Owner 3M INNOVATIVE PROPERTIES CO