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Title: Fuel cell membrane humidification

Abstract

A polymer electrolyte membrane fuel cell assembly has an anode side and a cathode side separated by the membrane and generating electrical current by electrochemical reactions between a fuel gas and an oxidant. The anode side comprises a hydrophobic gas diffusion backing contacting one side of the membrane and having hydrophilic areas therein for providing liquid water directly to the one side of the membrane through the hydrophilic areas of the gas diffusion backing. In a preferred embodiment, the hydrophilic areas of the gas diffusion backing are formed by sewing a hydrophilic thread through the backing. Liquid water is distributed over the gas diffusion backing in distribution channels that are separate from the fuel distribution channels.

Inventors:
 [1]
  1. (Los Alamos, NM)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
872515
Patent Number(s):
US 5952119
Assignee:
Regents of University of California (Los Alamos, NM) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fuel; cell; membrane; humidification; polymer; electrolyte; assembly; anode; cathode; separated; generating; electrical; current; electrochemical; reactions; gas; oxidant; comprises; hydrophobic; diffusion; contacting; hydrophilic; therein; providing; liquid; water; directly; preferred; embodiment; formed; sewing; thread; distributed; distribution; channels; separate; generating electric; fuel cell; liquid water; fuel distribution; gas diffusion; electrolyte membrane; fuel gas; preferred embodiment; chemical reaction; polymer electrolyte; electrical current; cell assembly; chemical reactions; electrochemical reaction; water directly; membrane fuel; electrochemical reactions; generating electrical; cell membrane; /429/

Citation Formats

Wilson, Mahlon S. Fuel cell membrane humidification. United States: N. p., 1999. Web.
Wilson, Mahlon S. Fuel cell membrane humidification. United States.
Wilson, Mahlon S. Fri . "Fuel cell membrane humidification". United States. doi:. https://www.osti.gov/servlets/purl/872515.
@article{osti_872515,
title = {Fuel cell membrane humidification},
author = {Wilson, Mahlon S.},
abstractNote = {A polymer electrolyte membrane fuel cell assembly has an anode side and a cathode side separated by the membrane and generating electrical current by electrochemical reactions between a fuel gas and an oxidant. The anode side comprises a hydrophobic gas diffusion backing contacting one side of the membrane and having hydrophilic areas therein for providing liquid water directly to the one side of the membrane through the hydrophilic areas of the gas diffusion backing. In a preferred embodiment, the hydrophilic areas of the gas diffusion backing are formed by sewing a hydrophilic thread through the backing. Liquid water is distributed over the gas diffusion backing in distribution channels that are separate from the fuel distribution channels.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}

Patent:

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