Cobalt Oxalate Nanoribbons as Negative-Electrode Material for Lithium-Ion Batteries

• DOI: 10.1021/cm803435p
• Publication Date: 2009-04-06T11:56:05Z
• Authors: María José Aragón; Bernardo León; Carlos Pérez Vicente; José L. Tirado; Alan V. Chadwick; Aaron Berko; See-Yuen Beh
• Keywords: Anhydrous; Monoclinic crystal system; Orthorhombic crystal system

Orthorhombic cobalt oxalate dihydrate has been prepared in the form of nanoribbons by a reverse micelles method. The crystallographic structure resulting solid differs from monoclinic massive product. A careful dehydration nanocrystals leads to anhydrous which nanoribbon-shaped particles are preserved and Co2+ ions located centrosymmetric environment. CoC2O4 is used for first time as high-capacity lithium storage materials with improved rate performance. solids react lithium, leading metallic oxalate, shown XAS FTIR measurements. new electrode material displays reversible capacities close 900 mA·h·g−1 between 0 2 V versus novel reaction mechanism involves reduction−reoxidation.