Paper Title:
Preparation of Three Dimensionally Ordered Macroporous LiCoO2 Cathode for Lithium Batteries
  Abstract

Macroporous LiCoO2 was prepared by a colloidal crystal templating method. Colloidal crystal consisting of monodisperse polystyrene particles was used as the template for the synthesis of macroporous LiCoO2. A Li-Co-O sol was injected into the template, and it was calcined at high temperatures. A porous membrane of LiCoO2 with three dimensionally ordered macroporous (3DOM) structure was obtained. The prepared material had a rock-salt type crystallographic structure with R3m space group. The interconnected macropores with relative uniform size (0.8~0.9 ;m) were observed on entire part of the membrane. The electrochemical properties of the 3DOM LiCoO2 were characterized with galvanostatic charge-discharge measurements in an organic electrolyte containing a lithium salt. The 3DOM LiCoO2 exhibited charge and discharge capacities of 136 and 107 mA h g-1, respectively, at around 3.9 V vs. Li/Li+, indicating that 3DOM LiCoO2 electrode had solid state redox reaction accompanying with Li+ ion insertion and extraction to CoO2 frameworks.

  Info
Periodical
Edited by
K. Katayama, K. Kato, T. Takenaka, M. Takata and K. Shinozaki
Pages
195-198
DOI
10.4028/www.scientific.net/KEM.350.195
Citation
S. W. Woo, H. Nakano, K. Dokko, K. Kanamura, "Preparation of Three Dimensionally Ordered Macroporous LiCoO2 Cathode for Lithium Batteries", Key Engineering Materials, Vol. 350, pp. 195-198, 2007
Online since
October 2007
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$32.00
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