Issue 29, 2011
From the journal:

Journal of Materials Chemistry

Microscopically porous, interconnected single crystal LiNi1/3Co1/3Mn1/3O2 cathode material for Lithium ion batteries

Zhen-Dong Huang,a   Xian-Ming Liu,a   Sei-Woon Oh,a   Biao Zhang,a   Peng-Cheng Maa  and  Jang-Kyo Kim*a  

* Corresponding authors

a Department of Mechanical Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
E-mail: mejkkim@ust.hk
Fax: +852-2358-1543
Tel: +852-2358-7207

Abstract

A porous cathode material consisting of interconnected single crystal LiNi1/3Co1/3Mn1/3O2 (NCM) nanoparticles has been synthesized for lithium ion batteries. Trace nitric acid is used as pH value adjuster to form honeycomb-shaped foam, and a novel stepwise crystallization process is employed to obtain NCM particles. The modified sol–gel process followed by an optimized crystallization process results in significant improvements in chemical and physical characteristics of the NCM particles. They consist of a fully-developed single crystal NCM with uniform composition and a porous NCM architecture with a reduced degree of fusion and a large specific surface area. These structural modifications in turn significantly enhance the electrochemical properties of the NCM cathode material, in terms of improved charge/discharge capacity, cyclic stability and rate capability.

Graphical abstract: Microscopically porous, interconnected single crystal LiNi1/3Co1/3Mn1/3O2 cathode material for Lithium ion batteries

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Article information

DOI
https://doi.org/10.1039/C1JM00059D
Article type
Paper
Submitted
05 Jan 2011
Accepted
05 May 2011
First published
16 Jun 2011

J. Mater. Chem., 2011,21, 10777-10784

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Microscopically porous, interconnected single crystal LiNi1/3Co1/3Mn1/3O2 cathode material for Lithium ion batteries

Z. Huang, X. Liu, S. Oh, B. Zhang, P. Ma and J. Kim, J. Mater. Chem., 2011, 21, 10777 DOI: 10.1039/C1JM00059D

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