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Method of forming metal or its oxide layers on ion conductive polymer membranes

A technology of oxides and mixed metals, applied in metal material coating process, ion implantation plating, coating, etc., can solve problems such as limitations and achieve excellent adhesion

Inactive Publication Date: 2003-09-17
DE NORA ELETTRODI SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As individual technologies, existing metal deposition techniques (UHD, CVD, and sputtering) limit their ability to typically use thin metal films for ion-conducting films due to operating temperature or process conditions

Method used

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  • Method of forming metal or its oxide layers on ion conductive polymer membranes
  • Method of forming metal or its oxide layers on ion conductive polymer membranes

Examples

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Embodiment II

[0049] This example illustrates the use of IBAA-modified ion-conducting membranes as highly selective membranes. The problem of methanol crossover in direct methanol fuel cells (DMFCs) can be alleviated if a thin, dense, impermeable membrane is formed on the ion-exchange membrane, which allows the selective passage of protons. This assembly allows methanol to be oxidized at the anode, the resulting protons migrate through the assembly, and oxygen is reduced at the cathode so that the protons recombine with the reduced oxygen to form water.

[0050] Tungsten oxide is a known selective proton conductor. But currently known methods of forming such thin impermeable films of tungsten oxide on ion-conducting membranes cannot be used for DMFC or other applications.

[0051] Thin films of tungsten trioxide were prepared on 8" x 8" Nafion wafers. Nafion was loaded into the drum after being wiped with a simple cloth as described in the previous examples. The drum was rotated at 2-5 r...

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Abstract

Method for coating solid polymer electrolytes or other ion-conducting polymer surfaces with a thin film of at least one metal, metal alloy, metal oxide or mixed metal oxides, by subjecting the ion-conductive surfaces to low energy electron beam to clean the same and then subjecting the cleaned surfaces under vacuum to a high energy beam containing ions of the metal to be deposited to form the thin film. Materials prepared using this method gain advantage in electrochemical and membrane-based applications.

Description

technical field [0001] The present invention relates to a new method of coating the surface of a solid polymer electrolyte or other ion-conducting polymer with a film of at least one metal, metal alloy, metal oxide or mixed metal oxide, by introducing a conductive The ionized surface is subjected to a low-energy electron beam to clean the surface, and then the cleaned surface is subjected to a high-energy ion beam containing metal ions to be deposited under vacuum to form a film. Materials prepared in this way are advantageous for electrochemical and thin-film-based applications. Background technique [0002] The use of solid polymer electrolytes has expanded to the field of electrochemistry. Electrochemical processes depend on the transfer of ionic and electronic charges through the use of anodes, cathodes, and ionic polymer electrolytes. However, with the advent of solid polymer electrolyte fuel cells, the traditional liquid phase has been replaced by thin films composed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/22C23C14/02C23C14/20C23C14/32C25B9/23G01N27/49H01M4/88H01M8/02H01M8/10
CPCC23C14/022C23C14/20G01N27/404H01M4/8817H01M4/8867H01M8/1004H01M8/1009H01M8/1016H01M2300/0082Y02P70/50Y02E60/50C25B9/23C23C26/00
Inventor R·J·阿伦J·R·吉阿罗穆伯朵
Owner DE NORA ELETTRODI SPA