MOF-Derived Hollow Co9S8 Nanoparticles Embedded in Graphitic Carbon Nanocages with Superior Li-Ion Storage

被引:323
|
作者
Liu, Jun [1 ,2 ]
Wu, Chao [1 ]
Xiao, Dongdong [3 ,4 ]
Kopold, Peter [1 ]
Gu, Lin [3 ,4 ]
van Aken, Peter A. [1 ]
Maier, Joachim [1 ]
Yu, Yan [1 ,5 ]
机构
[1] Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany
[2] S China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China
[3] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[4] Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China
[5] Univ Sci & Technol China, Chinese Acad Sci, Dept Chem & Mat Sci, Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
COBALT SULFIDE; ANODE MATERIALS; HIGH-CAPACITY; LITHIUM; PERFORMANCE; MICROSPHERES; CHALLENGES; NANOSPHERES; NANOWIRES; BATTERIES;
D O I
10.1002/smll.201503821
中图分类号
O6 [化学];
学科分类号
0703 ;
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.
引用
收藏
页码:2354 / 2364
页数:11
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