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Title: Enhanced methanol utilization in direct methanol fuel cell

Abstract

The fuel utilization of a direct methanol fuel cell is enhanced for improved cell efficiency. Distribution plates at the anode and cathode of the fuel cell are configured to distribute reactants vertically and laterally uniformly over a catalyzed membrane surface of the fuel cell. A conductive sheet between the anode distribution plate and the anodic membrane surface forms a mass transport barrier to the methanol fuel that is large relative to a mass transport barrier for a gaseous hydrogen fuel cell. In a preferred embodiment, the distribution plate is a perforated corrugated sheet. The mass transport barrier may be conveniently increased by increasing the thickness of an anode conductive sheet adjacent the membrane surface of the fuel cell.

Inventors:
 [1];  [1]
  1. Los Alamos, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
874028
Patent Number(s):
6296964
Application Number:
09/472387
Assignee:
Regents of University of California (Los Alamos, NM)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
enhanced; methanol; utilization; direct; fuel; cell; improved; efficiency; distribution; plates; anode; cathode; configured; distribute; reactants; vertically; laterally; uniformly; catalyzed; membrane; surface; conductive; sheet; plate; anodic; forms; mass; transport; barrier; relative; gaseous; hydrogen; preferred; embodiment; perforated; corrugated; conveniently; increased; increasing; thickness; adjacent; membrane surface; fuel cell; gaseous hydrogen; preferred embodiment; distribution plate; methanol fuel; catalyzed membrane; fuel utilization; corrugated sheet; cell efficiency; conductive sheet; improved cell; surface form; direct methanol; /429/

Citation Formats

Ren, Xiaoming, and Gottesfeld, Shimshon. Enhanced methanol utilization in direct methanol fuel cell. United States: N. p., 2001. Web.
Ren, Xiaoming, & Gottesfeld, Shimshon. Enhanced methanol utilization in direct methanol fuel cell. United States.
Ren, Xiaoming, and Gottesfeld, Shimshon. Tue . "Enhanced methanol utilization in direct methanol fuel cell". United States. https://www.osti.gov/servlets/purl/874028.
@article{osti_874028,
title = {Enhanced methanol utilization in direct methanol fuel cell},
author = {Ren, Xiaoming and Gottesfeld, Shimshon},
abstractNote = {The fuel utilization of a direct methanol fuel cell is enhanced for improved cell efficiency. Distribution plates at the anode and cathode of the fuel cell are configured to distribute reactants vertically and laterally uniformly over a catalyzed membrane surface of the fuel cell. A conductive sheet between the anode distribution plate and the anodic membrane surface forms a mass transport barrier to the methanol fuel that is large relative to a mass transport barrier for a gaseous hydrogen fuel cell. In a preferred embodiment, the distribution plate is a perforated corrugated sheet. The mass transport barrier may be conveniently increased by increasing the thickness of an anode conductive sheet adjacent the membrane surface of the fuel cell.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {10}
}

Patent:

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