Development of Silver-Zinc Cells of Improved Cycle Life and Energy Density

Abstract

This document describes a Small Business Innovative Research (SBIR) Phase II program. The research was designed to improve the cycle life and energy density of silver zinc cells, particularly those used in naval propulsion systems, by advancing the state of the art of the negative electrode and the separator, which are responsible for most of the shortcomings of this electrochemical couple. Yardney relied on a new class of materials, known as Electro-Permeable Membranes, which were used as additives and/or coatings for the negative electrodes and also as coatings for conventional separator materials, such as cellophane and Celgard (microporous polypropylene). In addition, the use of bismuth oxide in conjunction with other additives to the negative electrode was shown to have a beneficial effect on cycle life and to reduce the hydrogen gassing of charged cells by up to 70%.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1996
Accession Number
ADA342989

Entities

People

  • R. Serenyi

Organizations

  • Naval Surface Warfare Center Carderock Division

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Biomedical And Dental Materials
  • Bismuth Oxides
  • Cellophane
  • Chemistry
  • Composite Materials
  • Electrodes
  • Failure Mode And Effect Analysis
  • Films
  • Manufacturing
  • Mass Production
  • Materials
  • Materials Science
  • Military Research
  • Oxides
  • Plastics
  • Polymeric Films
  • Resins

Readers

  • Battery Technology and Engineering
  • Systems Analysis and Design