Microwave homogeneous synthesis of porous nanowire Co3O4 arrays with high capacity and rate capability for lithium ion batteries

Authors

Jieqiang WangFollow
Ben Niu, University of Jinan China
Guodong DuFollow
Rong Zeng, University of WollongongFollow
Zhixin Chen, University of WollongongFollow
Zaiping Guo, University of WollongongFollow
S. X. Dou, University of WollongongFollow

RIS ID

37633

Publication Details

Wang, J., Niu, B., Du, G., Zeng, R., Chen, Z., Guo, Z. and Dou, S. (2011). Microwave homogeneous synthesis of porous nanowire Co3O4 arrays with high capacity and rate capability for lithium ion batteries. Materials Chemistry and Physics, 126 (3), 747-754.

Abstract

In this paper, an efficient microwave-assisted homogeneous synthesis approach by urea hydrolysis is used to synthesize cobalt-basic-carbonate compounds. The dimensions and morphology of the synthesized precursor compounds are tailored by changes in the incorporated anions (CO₃²⁻ and OH⁻) under different conditions of temperature and time under microwave irradiation. The wire-like cobalt-basic-carbonate compound self-assembles into one-dimensional porous arrays of Co₃O₄ nanowires constructed of interconnected Co₃O₄ nanocrystals along the [1 1 0] axis after thermal decomposition at 350 °C. The textural characteristics of the Co₃O₄ products have strong positive effects on their electrochemical properties as electrode materials in lithium-ion batteries. The obtained porous nanowire Co₃O₄ arrays exhibit excellent capacity retention and rate capability at higher current rates, and their reversible capacity of 600 mAh g⁻¹ can be maintained after 100 cycles at the high current rate of 400 mA g⁻¹.