Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (11): 1384-1390.DOI: 10.11944/j.issn.1000-0518.2018.11.170407

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Spinel Lithium Manganese Oxide Octahedral Nanoparticles with Excellent Electrochemical Performance as Cathode Materials for Lithium-Ion Batteries

CHEN Lihuia,WU Qiuhana,PAN Peia,SONG Zixuana,WANG Fengab,DING Yuab*()   

  1. aCollege of Chemistry and Materials Science,Hubei Engineering University,Xiaogan,Hubei 432000,China
    bSchool of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
  • Received:2017-11-14 Accepted:2018-02-07 Published:2018-10-31 Online:2018-10-31
  • Contact: DING Yu
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51402096), Natural Scientific Foundation of Hubei Province(No.T201517).

Abstract:

Spinel LiMn2O4 octahedral nanoparticles were prepared by template-directed and high temperature solid-phase methods as cathode materials for lithium-ion batteries. Their structure and electrochemical performances were investigated. The electrochemical performance results show that LiMn2O4 as lithium-ion batteries cathode displays excellent cycling stability, rate capability and high specific capacity. The initial charge-discharge specific capacities are 147 mA·h/g and 179 mA·h/g at a current density of 100 mA/g and the voltage of 2.5~4.5 V, respectively. The cathode materials retain reversible charge-discharge capacities of 180 mA·h/g and 181 mA·h/g after 50 cycles, respectively. Excellent electrochemical properties may be attributed to the octahedral LiMn2O4 structure. This method is instructive for fabrication and design of excellent electrode materials for lithium ion batteries.

Key words: lithium manganese oxide, lithium-ion batteries, cathode materials, electrochemical performances