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Title: High power density fuel cell comprising an array of microchannels

Abstract

A phosphoric acid fuel cell according to one embodiment includes an array of microchannels defined by a porous electrolyte support structure extending between bottom and upper support layers, the microchannels including fuel and oxidant microchannels; fuel electrodes formed along some of the microchannels; and air electrodes formed along other of the microchannels. A method of making a phosphoric acid fuel cell according to one embodiment includes etching an array of microchannels in a substrate, thereby forming walls between the microchannels; processing the walls to make the walls porous, thereby forming a porous electrolyte support structure; forming anode electrodes along some of the walls; forming cathode electrodes along other of the walls; and filling the porous electrolyte support structure with a phosphoric acid electrolyte. Additional embodiments are also disclosed.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1130534
Patent Number(s):
8,715,882
Application Number:
12/829,331
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Jul 01
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Sopchak, David A, Morse, Jeffrey D, Upadhye, Ravindra S, Kotovsky, Jack, and Graff, Robert T. High power density fuel cell comprising an array of microchannels. United States: N. p., 2014. Web.
Sopchak, David A, Morse, Jeffrey D, Upadhye, Ravindra S, Kotovsky, Jack, & Graff, Robert T. High power density fuel cell comprising an array of microchannels. United States.
Sopchak, David A, Morse, Jeffrey D, Upadhye, Ravindra S, Kotovsky, Jack, and Graff, Robert T. Tue . "High power density fuel cell comprising an array of microchannels". United States. https://www.osti.gov/servlets/purl/1130534.
@article{osti_1130534,
title = {High power density fuel cell comprising an array of microchannels},
author = {Sopchak, David A and Morse, Jeffrey D and Upadhye, Ravindra S and Kotovsky, Jack and Graff, Robert T},
abstractNote = {A phosphoric acid fuel cell according to one embodiment includes an array of microchannels defined by a porous electrolyte support structure extending between bottom and upper support layers, the microchannels including fuel and oxidant microchannels; fuel electrodes formed along some of the microchannels; and air electrodes formed along other of the microchannels. A method of making a phosphoric acid fuel cell according to one embodiment includes etching an array of microchannels in a substrate, thereby forming walls between the microchannels; processing the walls to make the walls porous, thereby forming a porous electrolyte support structure; forming anode electrodes along some of the walls; forming cathode electrodes along other of the walls; and filling the porous electrolyte support structure with a phosphoric acid electrolyte. Additional embodiments are also disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {5}
}

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Works referenced in this record:

Development of portable fuel cell arrays with printed-circuit technology
journal, November 2003

  • O’Hayre, Ryan; Braithwaite, Daniel; Hermann, Weston
  • Journal of Power Sources, Vol. 124, Issue 2, p. 459-472
  • DOI: 10.1016/S0378-7753(03)00802-4