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author:

Chen, Hedong (Chen, Hedong.) [1] | Hou, Xianhua (Hou, Xianhua.) [2] | Chen, Fuming (Chen, Fuming.) [3] | Wang, Shaofeng (Wang, Shaofeng.) [4] | Wu, Bo (Wu, Bo.) [5] | Ru, Qiang (Ru, Qiang.) [6] | Qin, Haiqing (Qin, Haiqing.) [7] | Xia, Yingchun (Xia, Yingchun.) [8]

Indexed by:

EI

Abstract:

To reduce the influence from volume expansion of silicon during lithium lithiation/delithiation, milled flake graphite/plasma nano-silicon@carbon (MFG/PNSi@C) composite with void sandwich structure is synthesized by assembling thin MFG (thickness of 150 nm) sheets loading with carbon-coated PNSi (plasma nano-silicon) via a facile spray drying method. The MFG/PNSi@C composite, as lithium ion battery anode, exhibits excellent electrochemical performance at room temperature and displays an outstanding cyclic property even at high temperature. The MFG/PNSi@C electrode delivers reversible capacity of 1141 mAh g−1, and high initial Coulombic efficiency of 84.4%, and capacity retention of 84.1% after 200 cycles at a current density of 0.1 A g−1. Even at the current density of 0.2 and 0.4 A g−1, the reversible capacities of 1168 and 1102 mAh g−1 can be achieved respectively, with the capacity retention of 68.9% and 63.9% after 200 cycles. Even the work temperature goes up 60 °C, the discharge/charge capacities of 832/808 mAh g−1 can be obtained at a current density of 0.1 A g−1. The stable cyclic performance is mainly due to the void sandwich structure of the MFG/PNSi@C composite, which dramatically shortens lithium ion diffusion path and pitch carbon shell can buffer huge volume expansion. © 2018 Elsevier Ltd

Keyword:

Anodes Carbon carbon composites Current density Electric discharges Graphite Ions Lithium-ion batteries Sandwich structures Silicon Silicon compounds Spray drying

Community:

  • [ 1 ] [Chen, Hedong]Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection Materials, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou; 510006, China
  • [ 2 ] [Hou, Xianhua]Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection Materials, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou; 510006, China
  • [ 3 ] [Chen, Fuming]Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection Materials, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou; 510006, China
  • [ 4 ] [Wang, Shaofeng]Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection Materials, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou; 510006, China
  • [ 5 ] [Wu, Bo]Multiscale Computational Materials Facility, Key Laboratory of Eco-Materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350100, China
  • [ 6 ] [Ru, Qiang]Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection Materials, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou; 510006, China
  • [ 7 ] [Qin, Haiqing]Guangxi Key Laboratory of Superhard Material, China Nonferrous Metal (Guilin) Geology and Mining Co., Ltd., Guilin; 541004, China
  • [ 8 ] [Xia, Yingchun]Beijing jwgb Sci & Tech Co. Ltd, Beijing; 100055, China

Reprint 's Address:

  • [hou, xianhua]guangdong engineering technology research center of efficient green energy and environment protection materials, guangdong provincial key laboratory of quantum engineering and quantum materials, school of physics and telecommunication engineering, south china normal university, guangzhou; 510006, china

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Source :

Carbon

ISSN: 0008-6223

Year: 2018

Volume: 130

Page: 433-440

7 . 4 6 6

JCR@2018

1 0 . 5 0 0

JCR@2023

ESI HC Threshold:209

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 125

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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