Synthesis and Electrochemical Properties Characterization of SnO2-coated LiNi1/3Co1/3Mn1/3O2 Cathode Material for Lithium Ion Batteries

Abstract

LiNi1/3Co1/3Mn1/3O2 cathode materials have been coated with SnO2 (3% wt) by heterogeneous nucleation process to improve its electrochemical performances and the physical and electrochemical properties were studied. The scanning electron microscope (SEM) images show that there is a uniform coating on the modified materials and the X-ray diffraction (XRD) patterns show that the structure of LiNi1/3Co1/3Mn1/3O2 is not affected by the SnO2 coating. The electrochemical tests indicate that the SnO2-coated LiNi1/3Co1/3Mn1/3O2 improves the cyclic performance and rate capability comparing the bare LiNi1/3Co1/3Mn1/3O2. The electrochemical impedance spectroscopy (EIS) studies suggest that the presence of a thin SnO2 layer could suppress the reaction between the cathode and electrolyte, and remarkably decreases the charge transfer resistance, which is attributed to the improvement in electrochemical performances.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2009
Accession Number
ADA538126

Entities

People

  • Chuang-fu Zhang
  • Jian-hui Wu
  • Jing Zhan
  • Ping Yang
  • You-qi Fan

Organizations

  • Central South University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Charge Transfer
  • Charged Particles
  • Diffraction
  • Electrochemical Reactions
  • Electrolytes
  • Electron Microscopy
  • Films
  • Frequency
  • Lithium Ion Batteries
  • Materials
  • Microscopes
  • Nucleation
  • Radiation
  • Resistance
  • Spectra
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Battery Technology and Engineering
  • Electrochemical Surface Science
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene