RESEARCH ON LITHIUM BATTERIES

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Authors
  1. Hill, I.R.
  2. Goledzinowski, M.
  3. Dore, R.
Corporate Authors
Ottawa Univ, Ottawa ONT (CAN) Electrochemical Science and Technology Centre;Chief of Research and Development, Ottawa ONT (CAN) Director Research and Development Air
Abstract
The report describes research carried out on two types of lithium batteries. The first is a rechargeable lithium-sulphur dioxide system that uses an all-inorganic electrolyte. This lithium/liquid cathode system was chosen in order to obtain a relatively high discharge rate capability at temperatures from +20C down to -30C. The fabrication and cycling performance of research cells are described, including the perparation and physical properties (surface area and porosity) of porous polytetrafluoroethylene-bonded carbon electrodes. The low temperature performance of the standard electrolyte, LiAlCl4 . 3SO2, was unsatisfactory at -5C and so an improved electrolyte was sought. Therefore, studies of electrolytes containing mixed salts were made. The melting point and cyclic voltammetric properties of these electrolytes are discussed. Raman spectroscopy was used to study the species present in these electrolytes and also to partially identify the discharge products, in-situ. Infrared spectroscopy was used to measure trace water contamination and other impurities in the electrolytes and electrochemical impedance spectroscopy was sued to monitor film growth on the lithium electrode. The second couple discussed is the lithium-thionyl chloride non-rechargeable system.
Date of publication
01 Dec 1993
Number of Pages
69
DSTKIM No
94-00992
CANDIS No
136972
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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