期刊
JOURNAL OF POWER SOURCES
卷 146, 期 1-2, 页码 482-486出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2005.03.095
关键词
cobalt oxide; anodic material; lithium battery; calcination temperature
The characteristics of CoO prepared from the calcination of Co(OH)(2) (precursor of CoO) in the N, atmosphere were analyzed, and the charge/discharge properties of CoO was also investigated in this paper. Increasing the calcination temperature from 200 to 900 degrees C the grain size of CoO increased from 6.59 to 31.5 nm, and the BET surface area decreased from 89.83 to 0.47 m(2)g(-1). For CoO calcinated at 200 degrees C the maximum charge capacity, the coulomb efficiency and the irreversible capacity at the first cycle of Li/CoO battery were found to be 1233.57 mAh g(-1), 98.46% and 305.87 mAh g(-1), respectively. The irreversible capacity in the first cycle could be recovered in the following charge/discharge cycles. (c) 2005 Elsevier B.V. All rights reserved.
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