Journal of Inorganic Materials ›› 2013, Vol. 28 ›› Issue (3): 336-340.DOI: 10.3724/SP.J.1077.2012.12440

• Research Letter • Previous Articles     Next Articles

Synthesis and Characterization of Li1.035Mn1.965O4 and Al-doped Li1.035Al0.035Mn1.930O4 as Cathode Materials for Li-ion Batteries by a Wet-chemical Technique

KONG Long1,2, LI Yun-Jiao1,2, LI Wei-Jian2, Li Pu-Liang2, LI Hua-Cheng2   

  1. (1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China; 2. Citic Dameng Mining Industries Limited, Nanning 530028, China)
  • Received:2012-07-18 Revised:2012-08-15 Published:2013-03-20 Online:2013-02-20
  • About author:KONG Long (1988–), male, Master degree candidate. E-mail: 670654388@qq.com
  • Supported by:

    National Natural Science Foundation of China (50174058); Guangxi Zhuang Autonomous Region (Glorious Laurel Scholar Program, 2011)

Abstract: Spinel Li1.035Mn1.965O4 and Al-doped Li1.035Al0.035Mn1.930O4 cathode materials were synthesized by a simple wet-chemical technique and heat treatment. The structure and the morphology of the two samples were investigated by powder X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The XRD patterns show that both of the two samples exhibit a well-defined spinel structure. The TEM result demonstrates that the Li1.035Al0.035Mn1.930O4 powder possesses a good crystalline state. The galvanostatic charge/discharge tests indicate that the Li1.035Al0.035Mn1.930O4 material delivers an excellent cycling ability and a nice rate capability, maintaining 96.4% of its initial capacity after 100 charge-discharge cycles at 0.5C and keeping 79.6% of the reversible capacity at 0.5C discharge rate when discharges at 4C rate.

Key words: LiMn2O4, Al substitution, wet-chemical technique, electrochemical performance

CLC Number: