Nano Express

Nanoscale Research Letters

, 4:353

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

LiMn2O4–yBr y Nanoparticles Synthesized by a Room Temperature Solid-State Coordination Method

  • Yudai HuangAffiliated withInstitute of Applied Chemistry, Xinjiang UniversitySchool of Science, Xi’an Jiaotong University
  • , Rongrong JiangAffiliated withInstitute of Applied Chemistry, Xinjiang University
  • , Shu-Juan BaoAffiliated withInstitute of Applied Chemistry, Xinjiang University
  • , Yali CaoAffiliated withInstitute of Applied Chemistry, Xinjiang UniversitySchool of Science, Xi’an Jiaotong University
  • , Dianzeng JiaAffiliated withInstitute of Applied Chemistry, Xinjiang UniversitySchool of Science, Xi’an Jiaotong University Email author 

Abstract

LiMn2O4–yBr y nanoparticles were synthesized successfully for the first time by a room temperature solid-state coordination method. X-ray diffractometry patterns indicated that the LiMn2O4–yBr y powders were well-crystallized pure spinel phase. Transmission electron microscopy images showed that the LiMn2O4–yBr y powders consisted of small and uniform nanosized particles. Synthesis conditions such as the calcination temperature and the content of Brwere investigated to optimize the ideal condition for preparing LiMn2O4–yBr y with the best electrochemical performances. The optimized synthesis condition was found in this work; the calcination temperature is 800 °C and the content of Bris 0.05. The initial discharge capacity of LiMn2O3.95Br0.05obtained from the optimized synthesis condition was 134 mAh/g, which is far higher than that of pure LiMn2O4, indicating introduction of Brin LiMn2O4is quite effective in improving the initial discharge capacity.

Keywords

LiMn2O4–yBr y Nanoparticles Room temperature solid-state coordination method Lithium–ion battery