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Synthesis and Electrochemical Performance of Spinel LiMn 2 O 4‐ x (SO 4 ) x Cathode Materials
Author(s) -
Chen ZhaoYong,
He Yi,
Li ZbiJie,
Gao LiZhen,
Jiang Qi,
Yu ZuoLong
Publication year - 2002
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20020200216
Subject(s) - spinel , electrochemistry , chemistry , cathode , sulfate , inorganic chemistry , doping , chemical engineering , electrode , metallurgy , materials science , organic chemistry , optoelectronics , engineering
The spinel LiMn 2 O 4‐ x (SO 4 ) x compound cathode materials were synthesized by solid‐state reaction of the calculated amounts of LiOH·H 2 O, MnO 2 and MnSO 4 . The results of the electrochemical test demonstrated that these materials exhibited excellent electrochemical properties. The highest reversible capacity of these series of cathode materials was ∼ 120 mAh/g, and after 50 cycles, this reversible capacity was still around 116 mAh/g with nearly 100% reversible efficiency, which revealed that doped sulfate ion could improve the structural stability of spinel.