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Title: Conductivity fuel cell collector plate and method of fabrication

Abstract

An improved method of manufacturing a PEM fuel cell collector plate is disclosed. During molding a highly conductive polymer composite is formed having a relatively high polymer concentration along its external surfaces. After molding the polymer rich layer is removed from the land areas by machining, grinding or similar process. This layer removal results in increased overall conductivity of the molded collector plate. The polymer rich surface remains in the collector plate channels, providing increased mechanical strength and other benefits to the channels. The improved method also permits greater mold cavity thickness providing a number of advantages during the molding process.

Inventors:
 [1]
  1. Juno Beach, FL
Issue Date:
Research Org.:
Energy Partners, L.C. (West Palm Beach, FL)
OSTI Identifier:
874736
Patent Number(s):
6451471
Assignee:
Teledyne Energy Systems, Inc. (Hunt Valley, MD)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
DOE Contract Number:  
FC02-97EE50476
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
conductivity; fuel; cell; collector; plate; method; fabrication; improved; manufacturing; pem; disclosed; molding; highly; conductive; polymer; composite; formed; concentration; external; surfaces; rich; layer; removed; land; machining; grinding; similar; process; removal; results; increased; overall; molded; surface; remains; channels; providing; mechanical; strength; benefits; permits; mold; cavity; thickness; advantages; fuel cell; polymer composite; collector plate; /429/

Citation Formats

Braun, James C. Conductivity fuel cell collector plate and method of fabrication. United States: N. p., 2002. Web.
Braun, James C. Conductivity fuel cell collector plate and method of fabrication. United States.
Braun, James C. Tue . "Conductivity fuel cell collector plate and method of fabrication". United States. https://www.osti.gov/servlets/purl/874736.
@article{osti_874736,
title = {Conductivity fuel cell collector plate and method of fabrication},
author = {Braun, James C},
abstractNote = {An improved method of manufacturing a PEM fuel cell collector plate is disclosed. During molding a highly conductive polymer composite is formed having a relatively high polymer concentration along its external surfaces. After molding the polymer rich layer is removed from the land areas by machining, grinding or similar process. This layer removal results in increased overall conductivity of the molded collector plate. The polymer rich surface remains in the collector plate channels, providing increased mechanical strength and other benefits to the channels. The improved method also permits greater mold cavity thickness providing a number of advantages during the molding process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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