Nickel/Cadmium Aircraft Batteries: Experience with Celgard Barrier Layers at DREO.

Abstract

Problems arise with nickel/cadmium aircraft batteries as a result of deterioration of the conventional cellophane barrier layer in the separators. The cellophane deteriorates especially rapidly in the cells at elevated temperatures. Tests have shown that Celgard, a polypropylene microporous polymeric film manufactured by the Celanese Plastics Company, can be substituted for the cellophane and can readily withstand the oxidizing environment in the cell even at elevated temperatures. Celgard is available with several variations in characteristics but most of them were not studied in detail. Problems may be experienced with deterioration of wetting characteristics but these do not appear to be serious. Examples of laboratory experience which illustrates the ability of the Celgard to withstand severe usage are given. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1978
Accession Number
ADA056769

Entities

People

  • Gaston Verville
  • Keiva Feldman

Organizations

  • Defence Research and Development Canada

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Cellophane
  • Cellular Structures
  • Environment
  • Failure Mode And Effect Analysis
  • Field Tests
  • Films
  • High Temperature
  • Materials
  • National Security
  • Plastics
  • Polymeric Films
  • Polypropylene
  • Security
  • Short Circuits
  • Standards
  • Turbines

Readers

  • Battery Technology and Engineering
  • Systems Analysis and Design