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Improvement of Electrochemical Performances of Li [ Ni0.8Co0.1Mn0.1 ] O2 Cathode Materials by Fluorine Substitution

Improvement of Electrochemical Performances of Li [ Ni0.8Co0.1Mn0.1 ] O2 Cathode Materials by... Layered (, 0.02, 0.04, and 0.06) materials having spherical morphology have been synthesized by a hydroxide coprecipitation method. The effect of fluorine content on the structure, morphology, electrochemical properties, and thermal stability of the has been extensively studied. Electrochemical impedance spectroscopy and electron microscopy showed that fluorine substitution played the important role of reducing the interfacial resistance between cathode and electrolyte, resulting from stabilization of the host structure. The fluorine substitution for oxygen substantially improved the overall electrochemical properties of , such as the capacity retention, rate capability, and thermal stability. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Electrochemical Society IOP Publishing

Improvement of Electrochemical Performances of Li [ Ni0.8Co0.1Mn0.1 ] O2 Cathode Materials by Fluorine Substitution

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Copyright
Copyright © 2007 ECS - The Electrochemical Society
ISSN
0013-4651
eISSN
1945-7111
DOI
10.1149/1.2735916
Publisher site
See Article on Publisher Site

Abstract

Layered (, 0.02, 0.04, and 0.06) materials having spherical morphology have been synthesized by a hydroxide coprecipitation method. The effect of fluorine content on the structure, morphology, electrochemical properties, and thermal stability of the has been extensively studied. Electrochemical impedance spectroscopy and electron microscopy showed that fluorine substitution played the important role of reducing the interfacial resistance between cathode and electrolyte, resulting from stabilization of the host structure. The fluorine substitution for oxygen substantially improved the overall electrochemical properties of , such as the capacity retention, rate capability, and thermal stability.

Journal

Journal of the Electrochemical SocietyIOP Publishing

Published: May 11, 2007

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