期刊
SOLID STATE IONICS
卷 130, 期 1-2, 页码 61-69出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-2738(99)00293-3
关键词
lithium nitride; lithium battery; Li2.0Co0.4N; Li1.37Co0.4N; Cr3O8
Lithium cobalt nitride, Li2.6Co0.4N, has a high capacity of 900 mAh/g with good cycle performance in lithium deintercalation and intercalation. The good reversibility and low potential in comparison to lithium metal (0.7 V on average) suggests that this nitride is a good candidate for an anode in a lithium secondary battery. In order to use Li2.6Co0.4N as the anode fur lithium secondary batteries, possible combinations with cathode materials were considered: (1) Li2.6Co0.4N/Li0.64Mn1.96O4 cell. Lithium ions were initially extracted from Li1.05Mn1.96O4 by using Br, as an oxidant; (2) Li2.6Co0.4N/a-Cr3O8 cell, using a Li-free material of amorphous Cr3O8, which has a high lithium insertion capacity of more than 300 mAh/g; (3) Li1.37Co0.4N/Li1.10Mn1.90O4 cell. Li1.37Co0.4N was used as the anode with the lithium chemically extracted. These lithium secondary batteries showed very high capacity. (C) 2000 Elsevier Science B.V. All rights reserved.
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