Anti-fluorite type Li sub(6)CoO sub(4), Li sub(5)FeO sub(4), and Li sub(6)MnO sub(4) as the cathode for lithium secondary batteries

The anti-fluorite type materials Li sub(6)CoO sub(4), Li sub(5)FeO sub(4) and Li sub(6)MnO sub(4) were synthesized and studied as a cathode for lithium secondary batteries. One equivalent Li was deintercalated from Li sub(6)CoO sub(4) and reversibly intercalated, while only 0.5 Li extraction and ins...

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Bibliographic Details
Published in:Solid state ionics 1999-07, Vol.122 (1-4), p.59-64
Main Authors: Narukawa, S, Takeda, Y, Nishijima, M, Imanishi, N, Yamamoto, O, Tabuchi, M
Format: Article
Language:English
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Summary:The anti-fluorite type materials Li sub(6)CoO sub(4), Li sub(5)FeO sub(4) and Li sub(6)MnO sub(4) were synthesized and studied as a cathode for lithium secondary batteries. One equivalent Li was deintercalated from Li sub(6)CoO sub(4) and reversibly intercalated, while only 0.5 Li extraction and insertion was possible for Li sub(5)FeO sub(4) and no Li was extracted from Li sub(6)MnO sub(4). The cell performance of Li/Li sub(6)CoO sub(4) with 1 M LiClO sub(4)/EC-DME was relatively good in the shallow region 0 less than or equal to x less than or equal to 0.75 in Li sub(6-x)CoO sub(4) and the large hysteresis with the charge and discharge curves showed a different mechanism between Li deintercalation and intercalation.
ISSN:0167-2738