Self-assembled uniform double-shelled Co3V2O8 hollow nanospheres as anodes for high-performance Li-ion batteries

• 作者: Hao Zheng Xiao Chen Yun Yang Lin Li Chuan-Qi Feng Shi-Quan Wang
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（12）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 3485-3493
• 页数: 9页
• 语种: 英文

摘要

Hollow micro-/nanostructures have achieved great success in the field of renewable battery materials by reducing the volume change and promoting the ion trans-port.Double-shelled Co3V2O8 hollow nanospheres (CVO-DSS) were synthesized using a facile solvothermal method followed by a thermal treatment in the absence of any surfactant.Meanwhile,two other architectures of hollow nanospheres and nanoparticles were obtained by changing the annealing temperature.Benefiting from the desired hollow structure,the CVO-DSS electrode exhibits excel-lent lithium storage properties as an anode.It exhibits a reversible discharge capacity of 1210 mAh·g-1 at 200 mA·g-1 after 100 cycles and a satisfactorily high rate capacity of 628 mAh·g-1 after 800 cycles at 5000 mA·g-1.These hollow nanostructures can efficiently enhance the contact area of the electrolyte/electrode interface,promote the diffusion of lithium ions and electrons and slow down the capacity loss during long cycles.