Improved electrochemical performance of Li1.2Mn0.54Ni0.13Co0.13O2by Mg doping for lithium ion battery cathode material

Hongjie Xu, Shengnan Deng, Guohua Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

67 Citations (Scopus)

Abstract

Li-rich, Mn-based layered material is one of the most promising cathode materials for next-generation lithium ion batteries. However, this material is subject to severe capacity fading and poor rate capability. When Li was replaced with Mg, the electrochemical performance of the material improved. Structural and elemental analyses indicate an expansion of the unit cell as a result of Mg doping, while the crystal structure remained unaffected. Higher specific capacity and better rate capability with more stable cycling performance were obtained from a sample of Li1.17Mg0.03Mn0.54Ni0.13Co0.13O2as compared with other samples that were either Mg-free or with Mg atomic content beyond 0.03.
Original languageEnglish
Pages (from-to)15015-15021
Number of pages7
JournalJournal of Materials Chemistry A
Volume2
Issue number36
DOIs
Publication statusPublished - 28 Sep 2014
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this