标题
作者
作者:Liu, J (Liu, Jun)[1,2 ]; Wu, C (Wu, Chao)[1 ]; Xiao, DD (Xiao, Dongdong)[3,4 ]; Kopold, P (Kopold, Peter)[1 ]; Gu, L (Gu, Lin)[3,4 ]; van Aken, PA (van Aken, Peter A.)[1 ]; Maier, J (Maier, Joachim)[1 ]; Yu, Y (Yu, Yan)[1,5 ]
期刊信息
摘要
Novel electrode materials consisting of hollow cobalt sulfide nanoparticles embedded in graphitic carbon nanocages (HCSP subset of GCC) are facilely synthesized by a top-down route applying room-temperature synthesized Co-based zeolitic imidazolate framework (ZIF-67) as the template. Owing to the good mechanical flexibility and pronounced structure stability of carbon nanocages-encapsulated Co9S8, the as-obtained HCSP subset of GCC exhibit superior Li-ion storage. Working in the voltage of 1.0-3.0 V, they display a very high energy density (707 Wh kg(-1)), superior rate capability (reversible capabilities of 536, 489, 438, 393, 345, and 278 mA h g(-1) at 0.2, 0.5, 1, 2, 5, and 10C, respectively), and stable cycling performance (approximate to 26% capacity loss after long 150 cycles at 1C with a capacity retention of 365 mA h g(-1)). When the work voltage is extended into 0.01-3.0 V, a higher stable capacity of 1600 mA h g(-1) at a current density of 100 mA g(-1) is still achieved.
关键词
KeyWords Plus:RECHARGEABLE LITHIUM BATTERIES; OXYGEN REDUCTION REACTION; COBALT SULFIDE; ELECTROCHEMICAL PROPERTIES; ELECTRODE MATERIALS; ANODE MATERIALS; HIGH-CAPACITY; PERFORMANCE; MICROSPHERES; CHALLENGES
作者信息
通讯作者地址:Yu, Y (通讯作者)
![]() | Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany. |
地址:
电子邮件地址:yanyumse@ustc.edu.cn
出版商
类别分类
研究方向:Chemistry; Science & Technology - Other Topics; Materials Science; Physics
Web of Science 类别:Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter