Porous Co3O4 nanoplatelets by self-supported formation as electrode Material for lithium-ion batteries

Authors

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

RIS ID

32939

Publication Details

Chen, Z., Wang, J., Guo, Z., Niu, B., Du, G., Zeng, R. & Dou, S. Xue. (2010). Porous Co3O4 nanoplatelets by self-supported formation as electrode Material for lithium-ion batteries. Electrochimica Acta, 55 (16), 4805-4811.

Abstract

In this paper, we have reported a simple and rapid approach for the large-scale synthesis of β-Co(OH)₂nanoplatelets via the microwave hydrothermal process using potassium hydroxide as mineralizer at 140 °C for 3 h. Calcining the β-Co(OH)₂ nanoplatelets at 350 °C for 2 h, porous Co₃O₄ nanoplatelets with a 3D quasi-single-crystal framework were obtained. The process of converting the β-Co(OH)₂ nanoplatelets into the Co₃O₄ nanoplatelets is a self-supported topotactic transformation, which is easily controlled by varying the calcining temperature. The textural characteristics of Co₃O₄ products have strong positive effects on their electrochemical properties as electrode materials in lithium-ion batteries. The obtained porous Co₃O₄nanoplatelets exhibit a low initial irreversible loss (18.1%), ultrahigh capacity, and excellent cyclability. For example, a reversible capacity of 900 mAh g⁻¹ can be maintained after 100 cycles.

Grant Number

ARC/DP0879070

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0879070