Facile synthesis of nanocage Co3O4 for advanced lithium-ion batteries

Authors

Ying Wang, University of WollongongFollow
Baofeng Wang, University of WollongongFollow
Feng Xiao, University of WollongongFollow
Zhenguo Huang, University of WollongongFollow
Yijing Wang, Nankai University
Christopher Richardson, University of WollongongFollow
Zhixin Chen, University of WollongongFollow
Lifang Jiao, Nankai University
Huatang Yuan, Nankai University

RIS ID

102892

Publication Details

Wang, Y., Wang, B., Xiao, F., Huang, Z., Wang, Y., Richardson, C., Chen, Z., Jiao, L. & Yuan, H. (2015). Facile synthesis of nanocage Co3O4 for advanced lithium-ion batteries. Journal of Power Sources, 298 203-208.

Abstract

A facile two-step annealing process is applied to synthesize nanocage Co3O4, using cobalt-based metal-organic framework as precursor and template. The as-obtained nanocages are composed of numerous Co3O4 nanoparticles. N2 adsorption-desorption isotherms show that the as-obtained Co3O4 has a porous structure with a favorable surface area of 110.6 m² g^-1. Electrochemical tests show that nanocage Co3O4 is a potential candidate as anode for lithium-ion batteries. A reversible specific capacity of 810 mAh g^-1 was obtained after 100 cycles at a high specific current of 500 mA g^-1. The material also displays good rate capability, with a reversible capacity of 1069, 1063, 850, and 720 mAh g^-1 at specific current of 100, 200, 800, and 1000 mA g^-1, respectively. The good electrochemical performance of nanocage Co3O4 can be attributed to its unique hierarchical hollow structure, which is maintained during electrochemical cycling.