Novel electrolyte additives to enhance zinc electrode cycle life Metadata

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Title

  • Main Title Novel electrolyte additives to enhance zinc electrode cycle life

Creator

  • Author: Doddapaneni, N.
    Creator Type: Personal
  • Author: Ingersoll, D.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: USDOE, Washington, DC (United States)

Publisher

  • Name: Sandia National Laboratories
    Place of Publication: Albuquerque, New Mexico
    Additional Info: Sandia National Labs., Albuquerque, NM (United States)

Date

  • Creation: 1995-11-01

Language

  • English

Description

  • Content Description: Electrochemical power sources that utilize zinc electrodes possess many advantages. Zinc is abundantly available, benign, inexpensive, stable over a wide operating temperature range, and has a high oxidation potential. In spite of these advantageous characteristics, rechargeable electrochemical systems based on zinc chemistry have not found widespread use. The major disadvantages of zinc electrodes are that they have limited cycle life due to zinc slumping and zinc electrode shape changes in alkaline solutions resulting from the solubility of zincate (Zn(OH){sub 4}{sup 2-}) in these solutions. As a result, premature cell failure often results due to cell shorting caused by dendritic growth as well as zinc slumping. In this paper we describe the chemical and physical characteristics of electrolyte solutions employing additives, particularly for zinc based electrochemical systems. These electrolytes are prepared using the alkali metal salts of 1,3,5-phenyltrisulfonic acid in combination with potassium hydroxide. The alkali metal salts of the acid possess good thermal stability, good ionic conductivity, and have a wide electrochemical voltage window in aqueous systems. With these electrolyte solutions improved cycle life was achieved in Zn/NiOOH and Zn/AgO. Improved cycle life with this additive is attributed to decreased zincate solubility, resulting in reduced zinc slumping and electrode shape changes. In addition, increased shelf-life and reduced self-discharge were also observed in many alkaline power sources.
  • Physical Description: 12 p.

Subject

  • STI Subject Categories: 25 Energy Storage
  • Keyword: Electrochemical Cells
  • Keyword: Electrodes
  • Keyword: Nickel Oxides
  • Keyword: Potassium Compounds
  • Keyword: Electrolytes
  • Keyword: Solubility
  • Keyword: Potassium Hydroxides
  • Keyword: Stability
  • Keyword: Zinc
  • Keyword: Silver Oxides
  • Keyword: Ionic Conductivity
  • Keyword: Additives
  • Keyword: Performance

Source

  • Conference: 188. meeting of the Electrochemical Society, Chicago, IL (United States), 8-13 Oct 1995

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE96001934
  • Report No.: SAND--95-2334C
  • Report No.: CONF-951007--6
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 123243
  • Archival Resource Key: ark:/67531/metadc627274

Note

  • Display Note: OSTI as DE96001934
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