A superior Li2SiO3-Composited LiNi0.5Mn1.5O4Cathode for High-Voltage and High-Performance Lithium-ion Batteries

Yunlong Deng, Jirong Mou, Huali Wu, Na Jiang, Qiaoji Zheng, Kwok Ho Lam, Chenggang Xu, Dunmin Lin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)

Abstract

The effects of Li2SiO3on the phase structure, morphology and electrochemical performance of the materials were investigated. As x increases, the structure and electrochemical properties of the materials are tailored. The cathode material with x = 0.10 delivers ultrahigh initial discharge capacity ∼150.3 mAh g−1, which is 24.4% larger than that of the pristine LiNi0.5Mn1.5O4(120.8 mAh g−1). The Li2SiO3-composited LiNi0.5Mn1.5O4materials present an enhanced cycling stability, better rate performance and lower charge transfer resistance. These excellent electrochemical properties indicate that the compositing of fast Li+-ion conductor Li2SiO3is an effective method to enhance the electrochemical performance of LiNi0.5Mn1.5O4-based cathode materials.
Original languageEnglish
Pages (from-to)19-31
Number of pages13
JournalElectrochimica Acta
Volume235
DOIs
Publication statusPublished - 1 May 2017

Keywords

  • Composite cathode
  • Electrochemical performance
  • Fast Li -ion conductor +
  • Li SiO 2 3
  • LiNi Mn O 0.5 1.5 4

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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