Antimony Nanocrystals Encapsulated in Carbon Microspheres Synthesized by a Facile Self-Catalyzing Solvothermal Method for High-Performance Sodium-Ion Battery Anodes

作者：Qiu, Shen; Wu, Xianyong; Xiao, Lifen^*; Ai, Xinping; Yang, Hanxi; Cao, Yuliang^*

来源：ACS Applied Materials & Interfaces, 2016, 8(2): 1337-1343.

DOI：10.1021/acsami.5b10182

• Sb@C microspheres
• self-catalyzed reaction
• solvothermal synthesis
• anode
• sodium-ion batteries

Antimony/carbon (Sb@C) microspheres are initially synthesized via a facile self-catalyzing solvothermal method, and their applicability as anode materials for sodium-ion batteries is investigated. The structural and morphological characterizations reveal that Sb@C microspheres are composed of Sb nanoparticles (similar to 20 nm) homogeneously encapsulated in the C matrix. The self-catalyzing solvothermal mechanism is verified through comparative experiments by using different raw materials. The as-prepared Sb@C microspheres exhibit superior sodium storage properties, demonstrating a reversible capacity of 640 mAh g(-1), excellent rate performance, and an extended cycling stability of 92.3% capacity retention over 300 cycles, making them promising anode materials for sodium-ion batteries.

• 出版日期2016-1-20
• 单位华中师范大学; 武汉大学