Design and preparation of interconnected quasi-ball-in-ball tin dioxide/carbon composite containing void-space with high lithium storage properties

作者：Tian, Qinghua; Tian, Yang; Zhang, Zhengxi; Yang, Li^*; Hirano, Shin-ichi

来源：Carbon, 2015, 95: 20-27.

DOI：10.1016/j.carbon.2015.08.003

• PERFORMANCE ANODE MATERIAL
• HOLLOW NANOSPHERES
• BATTERY ANODES
• CARBON
• SNO2
• NANOCOMPOSITES
• NANOPARTICLES
• CHALLENGES

Rapid capacity fading is one of the major obstacles that seriously impede the applications of tin dioxide (SnO2)-based electrodes. Compositing SnO2 with carbon to form SnO2/carbon composites with rational nanostructures has been proven to be an effective strategy to overcome the problem of rapid capacity fading to a certain extent. Herein, an interestingly interconnected quasi-ball-in-ball nanostructure SnO2/carbon composite, denoted as Cs@void@SnO2@C, has been successfully fabricated by a simple and novel strategy. When used as anode materials for lithium-ion batteries, the Cs@void@SnO2@C exhibits high lithium storage and long cycling performance, delivering a reversible capacity of 793.7 mAh g(-1) after 450 cycles at 200 mA g(-1), and a reversible capacity of 486.3 mAh g(-1) after 1000 cycles even at 1000 mA g(-1). The uniquely interconnected quasi-ball-in-ball structure should be responsible for the good electrochemical performance, which is further confirmed by comparing with two control samples of Cs@SnO2@C and Cs@SnO2.

• 出版日期2015-12
• 单位上海交通大学