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Title: Cell separator for use in bipolar-stack energy storage devices

An improved multi-cell electrochemical energy storage device, such as a battery, fuel cell, or double layer capacitor using a cell separator which allows cells to be stacked and interconnected with low electrical resistance and high reliability while maximizing packaging efficiency. By adding repeating cells, higher voltages can be obtained. The cell separator is formed by applying an organic adhesive on opposing surfaces of adjacent carbon electrodes or surfaces of aerogel electrodes of a pair of adjacent cells prior to or after pyrolysis thereof to form carbon aerogel electrodes. The cell separator is electronically conductive, but ionically isolating, preventing an electrolytic conduction path between adjacent cells in the stack.
Inventors:
 [1];  [2];  [3];  [4]
  1. (San Leandro, CA)
  2. (Livermore, CA)
  3. (Pleasanton, CA)
  4. (Pleasant Hill, CA)
Issue Date:
OSTI Identifier:
869763
Assignee:
Regents of University of California (Oakland, CA) LLNL
Patent Number(s):
US 5393619
Contract Number:
W-7405-ENG-48
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
cell; separator; bipolar-stack; energy; storage; devices; improved; multi-cell; electrochemical; device; battery; fuel; double; layer; capacitor; allows; cells; stacked; interconnected; electrical; resistance; reliability; maximizing; packaging; efficiency; adding; repeating; voltages; obtained; formed; applying; organic; adhesive; opposing; surfaces; adjacent; carbon; electrodes; aerogel; pair; prior; pyrolysis; form; electronically; conductive; ionically; isolating; preventing; electrolytic; conduction; path; stack; aerogel electrodes; adjacent carbon; carbon electrode; fuel cell; conduction path; adjacent cells; chemical energy; cell separator; layer capacitor; storage device; energy storage; electrical resistance; carbon aerogel; electronically conductive; double layer; storage devices; form carbon; adjacent cell; electrochemical energy; carbon electrodes; opposing surfaces; packaging efficiency; multi-cell electrochemical; opposing surface; improved multi-cell; allows cells; bipolar-stack energy; /429/361/