Tunable Co3O4 hollow structures (from yolk–shell to multi-shell) and their Li storage properties

Jingzhou Yin; Yu Zhang; Qingyi Lu; Xinglong Wu; Zhengjing Jiang; Liyun Dang; Haifeng Ma; Yuanyuan Guo; Feng Gao; Qingyu Yan

doi:10.1039/C7TA03929H

Tunable Co₃O₄ hollow structures (from yolk–shell to multi-shell) and their Li storage properties†

Jingzhou Yin,‡^abc Yu Zhang,‡^b Qingyi Lu,*^a Xinglong Wu,

^b Zhengjing Jiang,^c Liyun Dang,^a Haifeng Ma,^a Yuanyuan Guo,^b Feng Gao*^d and Qingyu Yan

*^b

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* Corresponding authors

^a State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, P. R. China
E-mail: qylu@nju.edu.cn

^b School of Materials Science and Engineering, Nanyang Technological University, Singapore
E-mail: alexyan@ntu.edu.sg

^c Jiangsu Key Laboratory for the Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huai'an 223001, P. R. China

^d Department of Materials Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China
E-mail: fgao@nju.edu.cn

Abstract

In this work, we report a facile approach to synthesize uniform Co₃O₄ hollow spheres with tunable shell numbers via controllably annealing cobalt(II) complex precursors at different heating rates. When evaluated as anodes for LIBs, the multi-shelled Co₃O₄ spheres exhibit high specific capacity, good rate capabilities and excellent cycling stability (1058 mA h g⁻¹ over 100 cycles at 1 A g⁻¹).

Journal of Materials Chemistry A

Tunable Co₃O₄ hollow structures (from yolk–shell to multi-shell) and their Li storage properties†

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Tunable Co₃O₄ hollow structures (from yolk–shell to multi-shell) and their Li storage properties

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Journal of Materials Chemistry A