The Effect of Additives in Lithium Cycling in Methyl Acetate

Abstract

Methyl acetate (MA) was examined as a solvent for use in nonaqueous secondary lithium batteries. The efficiency of cycling lithium on nickel in MA/ 1M LiClO4 containing less than 10 ppm H2O was less than 10%. Addition of nitromethane (NM), SO2 or small amounts of H2O improved the efficiency markedly. Compared to propylene carbonate (PC), MA plus SO2 or NM afforded more repeated cycles before failure of the working electrode. Unlike PC, the open circuit corrosion rate of electrodeposited lithium in MA is decreased in the presence of additives. The differences in behavior between PC and MA are attributed to the greater solubility of the MA-lithium reaction products, allowing greater opportunity for buildup of additive-induced conductive films on the metallic deposit.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1975
Accession Number
ADA006572

Entities

People

  • R. D. Rauh
  • S. B. Brummer

Tags

DTIC Thesaurus Topics

  • Carbonate Esters
  • Cells
  • Coatings
  • Corrosion
  • Current Density
  • Efficiency
  • Electrodeposition
  • Electrolytes
  • Materials
  • Molecular Sieves
  • Nitromethane
  • Photoelectrochemical Cells
  • Plating
  • Separators
  • Solvents
  • Storage Batteries
  • Substrates

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Polymer Science and Engineering.