MOF-Templated Synthesis of Co3O4@TiO2 Hollow Dodecahedrons for High-Storage-Density Lithium-Ion Batteries

Hui Ding; Xin-Ke Zhang; Jia-Qi Fan; Xue-Qing Zhan; Lei Xie; Dean Shi; Tao Jiang; Fang-Chang Tsai

doi:10.1021/acsomega.9b01405

MOF-Templated Synthesis of Co₃O₄@TiO₂ Hollow Dodecahedrons for High-Storage-Density Lithium-Ion Batteries

ACS Omega. 2019 Aug 2;4(8):13241-13249. doi: 10.1021/acsomega.9b01405. eCollection 2019 Aug 20.

Authors

Hui Ding¹, Xin-Ke Zhang¹, Jia-Qi Fan¹, Xue-Qing Zhan¹, Lei Xie¹, Dean Shi¹, Tao Jiang¹, Fang-Chang Tsai¹

Affiliation

¹ Hubei Key Laboratory of Polymer Materials, Key Laboratory for the Green Preparation and Application of Functional Materials (Ministry of Education), Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China.

Abstract

Co₃O₄ nanostructures have been extensively studied as anode materials for rechargeable lithium-ion batteries (LIBs) because of their stability and high energy density. However, several drawbacks including low electrical transport and severe volume changes over a long period of operation have limited their utilities in LIBs. Rational composite design is becoming an attractive strategy to improve the performance and stability of potential lithium-ion-battery anode materials. Here, a simple method for synthesizing hollow Co₃O₄@TiO₂ nanostructures using metal-organic frameworks as sacrificial templates is reported. Being used as an anode material for LIBs, the resulting composite exhibits remarkable cycling performance (1057 mAh g^-1 at 100 mA g^-1 after 100 cycles) and good rate performance. The optimized amorphous Co₃O₄@TiO₂ hollow dodecahedron shows a significant improvement in electrochemical performance and shows a wide prospect as an advanced anode material for LIBs in the future.