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Studies on Spinel LiMn2O4 Cathode Material Synthesized from Different Mn Sources

TANG Zhiyuana; FENG Jijuna; PENG Yaningb   

  1. a School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
    b School of Chemistry and Chemical Engineering, Jinan University, Jinan 250022, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-02-28 Published:2004-02-28
  • Contact: TANG Zhiyuan

采用不同锰源合成尖晶石LiMn2O4正极材料

唐致远a; 冯季军a; 彭亚宁b   

  1. a School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
    b School of Chemistry and Chemical Engineering, Jinan University, Jinan 250022, China
  • 通讯作者: 唐致远

Abstract: The spinel LiMn2O4 cathode material was synthesized with the solid-state reaction method.
Four manganese compounds including electrolytic manganese dioxide (EMD), MnCO3, Mn3O4 and
nano-EMD were used as Mn sources while LiOH.H2O was used as the uniform Li source. The
crystal structure characteristics of these samples produced were investigated by means of
XRD, SEM, particle size distribution analysis and specific surface area testing. Their
electrochemical properties were also studied by comparing their specific capacity, charge
and discharge efficiency and cycle performance.

Key words: Mn sources, structure, particle size, capacity, cycle performance

摘要: The spinel LiMn2O4 cathode material was synthesized with the solid-state reaction method.
Four manganese compounds including electrolytic manganese dioxide (EMD), MnCO3, Mn3O4 and
nano-EMD were used as Mn sources while LiOH.H2O was used as the uniform Li source. The
crystal structure characteristics of these samples produced were investigated by means of
XRD, SEM, particle size distribution analysis and specific surface area testing. Their
electrochemical properties were also studied by comparing their specific capacity, charge
and discharge efficiency and cycle performance.

关键词: Mn sources;structure;particle size;capacity;cycle performance