Electrochemical properties of LiNi1/3Co1/3Mn 1/3O2 cathode material modified by coating with Al 2O3 nanoparticles

Kazuhiro Araki, Noboru Taguchi, Hikari Sakaebe, Kuniaki Tatsumi, Zempachi Ogumi

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56 Citations (Scopus)

Abstract

LiNi1/3Co1/3Mn1/3O2 particles were coated with Al2O3 nanoparticles by means of a mechanochemical bonding process; SEM confirmed that the Al2O 3 particles were uniformly coated over the surface of the LiNi 1/3Co1/3Mn1/3O2 powder. During subsequent electrochemical testing using pouch cells, uncoated LiNi 1/3Co1/3Mn1/3O2 exhibited a gradual capacity fading and an increase in area specific impedance (ASI) at a 50% state of charge. Under the same conditions, the increase in ASI of the Al 2O3 modified samples was significantly suppressed, although the initial performance (charge/discharge capacity and ASI) slightly deteriorated. The Al2O3 coating was also effective in improving the cyclability of LiNi1/3Co1/3Mn 1/3O2 at elevated temperatures by reducing the extent of cracking.

Original languageEnglish
Pages (from-to)236-243
Number of pages8
JournalJournal of Power Sources
Volume269
DOIs
Publication statusPublished - Dec 10 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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