Hollow Porous VOx/C Nanoscrolls as High-Performance Anodes for Lithium-Ion Batteries

被引:26
作者
Jia, Bao-Rui [1 ]
Qin, Ming-Li [1 ]
Zhang, Zi-Li [1 ]
Li, Shu-Mei [1 ]
Zhang, De-Yin [1 ]
Wu, Hao-Yang [1 ]
Zhang, Lin [1 ]
Lu, Xin [1 ]
Qu, Xuan-Hui [1 ]
机构
[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, 30 Xueyuan Rd, Beijing 100083, Peoples R China
关键词
VOx/C nanoscrolls; hollow; low-crystalline; lithium-ion batteries; anodes; VANADIUM-OXIDE NANOTUBES; CATHODE MATERIALS; ELECTROCHEMICAL PERFORMANCE; HYDROTHERMAL SYNTHESIS; FACILE SYNTHESIS; HIGH-CAPACITY; CARBON; STORAGE; COMPOSITES; V2O3;
D O I
10.1021/acsami.6b07439
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Novel hollow porous VOx/C nanoscrolls are synthesized by an annealing process with the VOx/octadecylamine (ODA) nanoscrolls as both vanadium and carbon sources. In the preparation, the VOx/ODA nanoscrolls are first achieved by a two-phase solvothermal method using ammonium metavanadat as the precursor. Upon subsequent heating, the intercalated amines between the vanadate layers in the VOx/ODA nanoscrolls decompose into gases, which escape from inside the nanoscrolls and leave sufficient pores in the walls. As the anodes of lithium-ion batteries (LIBs), such hollow porous VOx/C nanoscrolls possess exceedingly high capacity and rate capability (904 mAh g(-1) at 1 A g-1) and long cyclic stability (872 mAh g(-1) after 210 cycles at 1 A g(-1)). The good performance is derived from the unique structural features of the hollow hierarchical porous nanoscrolls with low crystallinity, which could significantly suppress irreversible Li+ trapping as well as improve Li+ diffusion kinetics. This universal method of annealing amine-intercalated oxide could be widely applied to the fabrication of a variety of porous electrode materials for high-performance LIBs and supercapacitors.
引用
收藏
页码:25954 / 25961
页数:8
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