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Effects of 12-crown-4 ether on the electrochemical performance of CoO2 and TiS2 cathodes in Li polymer electrolyte cellsThe effect of adding 12-crown-4 ether (12Cr4) to the polyethylene oxide (PEO) electrolyte on the electrochemical properties of cells with Li(x)CoO2 or TiS2 as the cathode was investigated. The polymer electrolyte films were: (1) PEO, LiBF4; (2) PEO, LiBF4 with 12Cr4; (3) Li(x)CoO2, PEO, and LiBF4; and (4) Li(x)CoO2, PEO, LiBF4, and 12Cr4. It was found that, although 12Cr4 improved the cell performance over cells without 12Cr4 in the shallow c/d cycles (cyclic voltammetric behavior), it did not seem to prolong the active life of the cell. The cells with CoO2 as the cathode failed after a few c/d cycles, while similar cells with TiS2 did not fail even after 12 c/d cycles. The probable cause of failure in the case of CoO2 is ascribed to the instability of the CoO2 cathode.
Document ID
19930033192
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Nagasubramanian, G.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Attia, Alan I.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Halpert, G.
(JPL Pasadena, CA, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1992
Publication Information
Publication: Electrochemical Society, Journal
Volume: 139
Issue: 11
ISSN: 0013-4651
Subject Category
Inorganic And Physical Chemistry
Accession Number
93A17189
Distribution Limits
Public
Copyright
Other

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