New three-dimensional electrode structure for the lithium battery: Nano-sized gamma-Fe2O3 in a mesoporous carbon matrix

作者：Nagao Mild; Otani Michiko; Tomita Hiroki; Kanzaki Sho; Yamada Atsuo; Kanno Ryoji^*

来源：Journal of Power Sources, 2011, 196(10): 4741-4746.

DOI：10.1016/j.jpowsour.2011.01.066

• Lithium secondary batteries
• Mesoporous carbon
• Iron oxide

A new electrode structure based on a three-dimensional mesoporous matrix was developed. Nanoparticles of gamma-iron oxide (Fe2O3) were introduced into the mesopores of a carbon matrix (mesoporous carbon, CMK-3) by oxidizing metallic iron, which was electroplated in the matrix. The resulting structure was found to have a high charge-discharge capacity when used as the positive electrode of a lithium battery. The iron oxide nanoparticles bonded tightly to the electrically conductive electrode framework, and showed a high activity for the electrochemical reaction: Fe2O3 + 6Li -> 3Li(2)O + 2Fe.

• 出版日期2011-5-15