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http://dx.doi.org/10.5012/bkcs.2002.23.5.679

Synthesis and Electrochemical Characteristics of Li0.7[Ni0.05Mn0.95]O2 as a Positive Material for Rechargeable Lithium Batteries  

Shin, Sun-Sik
Kim, Dong-Won
Sun, Yang-Kook
Publication Information
Bulletin of the Korean Chemical Society / v.23, no.5, 2002 , pp. 679-682 More about this Journal
Abstract
Layered Na0.7[Ni0.05Mn0.95]O2 compounds have been synthesized by a sol-gel method, using glycolic acid as a chelating agent. Na0.7[Ni0.05Mn0.95]O2 precursors w ere used to prepare layered lithium manganese oxides by ion exchange for Na by Li, using LiBr in hexanol. Powder X-ray diffraction shows the layered Na0.7[Ni0.05Mn0.95]O2 has an O3 type structure, which exhibits a large reversible capacity of approximately 190 mA h g-1 in the 2.4-4.5 V range. Na0.7[Ni0.05Mn0.95]O2 powders undergo transformation to spinel during cycling.
Keywords
Lithium secondary batteries; Sol-gel method; Layered manganese; Cathode materials;
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