CONTINUATION OF ELECTROCHEMICAL NOISE STUDIES OF LITHIUM BATTERIES. VOLUME 2

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Authors
  1. Patraboy, T.J.
Corporate Authors
Farrington Lockwood Co Ltd, Kanata ONT (CAN);Chief of Research and Development, Ottawa ONT (CAN) Air Vehicle Research Section
Abstract
Minute fluctuations in the potential of an electrode are called electrochemical noise (EN). Such fluctuations are generated by discrete electrochemical processes which occur at the electrode/electrolyte interface. Consequently, EN may provide information about the electrode which is not available by more conventional techniques such as electrochemical impedance spectroscopy (EIS). This document describes the results of a study of electrochemical noise obtained from a lithium (Li) electrode in sulfur dioxide electrolyte. EIS measurements were also conducted on the same systems. This study has shown that EN is sensitive to changes in the nature of the film on the Li electrode which are not necessarily observed using EIS. Furthermore, the results of the EN measurements have indicated that the film growth/breakdown process has a periodic or quasi-periodic nature. This suggests that some of the EN is generated by deterministic processes. Thus, EN is likely to be a very useful tool for studying the state of a Li electrode in a variety of battery electrlolytes.
Keywords
Electrochemical noise;Electrochemical Impedance Spectrosopy
Date of publication
30 Sep 1993
Number of Pages
92
DSTKIM No
96-00160
CANDIS No
154313
Format(s):
Hardcopy;Document Image stored on Optical Disk

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