Low-cost synthesis of hierarchical Co3V2O8 microspheres as high-performance anode materials for lithium-ion batteries

作者：Chai, Hui^*; Wang, Yucheng; Fang, Yingchun; Lv, Yan; Dong, Hong; Jia, Dianzeng; Zhou, Wanyong

来源：Chemical Engineering Journal, 2017, 326: 587-593.

DOI：10.1016/j.cej.2017.05.162

• Cobalt vanadate
• Microspheres
• Cycling stability
• Lithium-ion batteries

Mixed-valence cobalt vanadates have attracted special attention for their perfect electrochemical performance as electrode material of lithium-ion batteries, yet their synthetic method is often beset with severe challenges. In this study, we report a new strategy to synthesize hierarchical Co3V2O8 mesoporous microspheres comprised of stacked nanoparticles via calcining the precursor obtained by a controllable co-precipitation of microspheres at room temperature. When evaluated as an anode material for lithium-ion batteries, the as-prepared samples manifest a high initial discharge capacity of 1099.0 mA h g(1) at 500 mA g(1), outstanding cycling retention rate of 114.3% after 200 cycles, and excellent rate capability with an average discharge capacity of 545.5 mA h g(1) at 2000 mA g(1). More importantly, the reported synthetic procedure is energy-saving, inexpensive, and straightforward rather than the complicated and energy-consuming synthesis approach reported by previous references. This new and low-cost route to fabricate hierarchical Co3V2O8 mesoporous microspheres with outstanding cycling stability is inspired for the application of lithium-ion batteries.

• 出版日期2017-10-15
• 单位中国科学院长春应用化学研究所; 新疆大学