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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] (Scholars:吴波) | Ru, Qiang (Ru, Qiang.) [6] | Qin, Haiqing (Qin, Haiqing.) [7] | Xia, Yingchun (Xia, Yingchun.) [8]

Indexed by:

EI Scopus SCIE

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 degrees 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. (c) 2018 Elsevier Ltd. All rights reserved.

Keyword:

Anode High temperature Lithium ion battery Spray drying Void sandwich structure

Community:

  • [ 1 ] [Chen, Hedong]South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Sch Phys & Telecommun Engn, Guangdong Engn Technol Res Ctr Efficient Green En, Guangzhou 510006, Guangdong, Peoples R China
  • [ 2 ] [Hou, Xianhua]South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Sch Phys & Telecommun Engn, Guangdong Engn Technol Res Ctr Efficient Green En, Guangzhou 510006, Guangdong, Peoples R China
  • [ 3 ] [Chen, Fuming]South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Sch Phys & Telecommun Engn, Guangdong Engn Technol Res Ctr Efficient Green En, Guangzhou 510006, Guangdong, Peoples R China
  • [ 4 ] [Wang, Shaofeng]South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Sch Phys & Telecommun Engn, Guangdong Engn Technol Res Ctr Efficient Green En, Guangzhou 510006, Guangdong, Peoples R China
  • [ 5 ] [Ru, Qiang]South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Sch Phys & Telecommun Engn, Guangdong Engn Technol Res Ctr Efficient Green En, Guangzhou 510006, Guangdong, Peoples R China
  • [ 6 ] [Wu, Bo]Fuzhou Univ, Coll Mat Sci & Engn, Multiscale Computat Mat Facil, Key Lab Ecomat Adv Technol, Fuzhou 350100, Fujian, Peoples R China
  • [ 7 ] [Qin, Haiqing]China Nonferrous Met Guilin Geol & Min Co Ltd, Guangxi Key Lab Superhard Mat, Guilin 541004, Peoples R China
  • [ 8 ] [Xia, Yingchun]Beijing Jwgb Sci & Tech Co Ltd, Beijing 100055, Peoples R China

Reprint 's Address:

  • [Hou, Xianhua]South China Normal Univ, Guangdong Prov Key Lab Quantum Engn & Quantum Mat, Sch Phys & Telecommun Engn, Guangdong Engn Technol Res Ctr Efficient Green En, Guangzhou 510006, Guangdong, Peoples R 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 Discipline: CHEMISTRY;

ESI HC Threshold:209

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 117

SCOPUS Cited Count: 125

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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