Yu Linhe, Yang Qihao, Zhu Guozhen, Che Renchao
Institute of Advanced Materials, Jiangxi Normal University Nanchang 330022 P. R. China
Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 P. R. China.
RSC Adv. 2022 Oct 18;12(46):29818-29825. doi: 10.1039/d2ra05204k. eCollection 2022 Oct 17.
Core-shell honeycomb-like CoO@C microspheres were synthesized a facile solvothermal method and subsequent annealing treatment under an argon atmosphere. Owing to the core-shell honeycomb-like structure, a long cycling life was achieved (a high reversible specific capacity of 318.9 mA h g was maintained at 5C after 1000 cycles). Benefiting from the coated carbon layers, excellent rate capability was realized (a reversible specific capacity as high as 332.6 mA h g was still retained at 10C). The design of core-shell honeycomb-like microspheres provides a new idea for the development of anode materials for high-performance lithium-ion batteries.
通过简便的溶剂热法并随后在氩气气氛下进行退火处理，合成了核壳蜂窝状CoO@C微球。由于核壳蜂窝状结构，实现了长循环寿命（在1000次循环后，在5C下保持318.9 mA h g的高可逆比容量）。受益于包覆的碳层，实现了优异的倍率性能（在10C下仍保留高达332.6 mA h g的可逆比容量）。核壳蜂窝状微球的设计为高性能锂离子电池负极材料的开发提供了新思路。
