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Title: Catalyst inks and method of application for direct methanol fuel cells

Abstract

Inks are formulated for forming anode and cathode catalyst layers and applied to anode and cathode sides of a membrane for a direct methanol fuel cell. The inks comprise a Pt catalyst for the cathode and a Pt--Ru catalyst for the anode, purified water in an amount 4 to 20 times that of the catalyst by weight, and a perfluorosulfonic acid ionomer in an amount effective to provide an ionomer content in the anode and cathode surfaces of 20% to 80% by volume. The inks are prepared in a two-step process while cooling and agitating the solutions. The final solution is placed in a cooler and continuously agitated while spraying the solution over the anode or cathode surface of the membrane as determined by the catalyst content.

Inventors:
 [1];  [1];  [1];  [1];  [2]
  1. (Los Alamos, NM)
  2. (Vancouver, CA)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1007498
Patent Number(s):
6,696,382
Application Number:
09/715,211
Assignee:
The Regents of the University of California (Los Alamos, CA) ALO
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Zelenay, Piotr, Davey, John, Ren, Xiaoming, Gottesfeld, Shimshon, and Thomas, Sharon C. Catalyst inks and method of application for direct methanol fuel cells. United States: N. p., 2004. Web.
Zelenay, Piotr, Davey, John, Ren, Xiaoming, Gottesfeld, Shimshon, & Thomas, Sharon C. Catalyst inks and method of application for direct methanol fuel cells. United States.
Zelenay, Piotr, Davey, John, Ren, Xiaoming, Gottesfeld, Shimshon, and Thomas, Sharon C. Tue . "Catalyst inks and method of application for direct methanol fuel cells". United States. https://www.osti.gov/servlets/purl/1007498.
@article{osti_1007498,
title = {Catalyst inks and method of application for direct methanol fuel cells},
author = {Zelenay, Piotr and Davey, John and Ren, Xiaoming and Gottesfeld, Shimshon and Thomas, Sharon C.},
abstractNote = {Inks are formulated for forming anode and cathode catalyst layers and applied to anode and cathode sides of a membrane for a direct methanol fuel cell. The inks comprise a Pt catalyst for the cathode and a Pt--Ru catalyst for the anode, purified water in an amount 4 to 20 times that of the catalyst by weight, and a perfluorosulfonic acid ionomer in an amount effective to provide an ionomer content in the anode and cathode surfaces of 20% to 80% by volume. The inks are prepared in a two-step process while cooling and agitating the solutions. The final solution is placed in a cooler and continuously agitated while spraying the solution over the anode or cathode surface of the membrane as determined by the catalyst content.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {2}
}

Patent:

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