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author:

Chen, C. (Chen, C..) [1] | Xiao, T. (Xiao, T..) [2] | Zhang, W. (Zhang, W..) [3] | Wang, J. (Wang, J..) [4] | Wei, M. (Wei, M..) [5]

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Scopus

Abstract:

The anode of Ge has attracted extensive attention due to its high theoretical capacity and energy density. A composite of hierarchically structural Ge encapsulated with nitrogen-doped carbon has been successfully synthesized by using a scalable method. Such a composite properly combines the two superiorities of hierarchically structural Ge and nitrogen-doped carbon, showing a superior electrochemical performance. Designed as an anode for lithium ion batteries, a high reversible capacity of 1067 mA h g−1 after 300 cycles at 1 A g−1, an outstanding rate capabilities of 1270 mA h g−1 at 0.1 A g−1 and 605 mA h g−1 at 20 A g−1 and a stably long-term capacity of 912 mA h g−1 after 600 cycles at 2 A g−1 were achieved. The hierarchically structural electrode could promote the diffusion of electrolyte into anode of Ge particles, and the nitrogen-doped carbon could strengthen the stability of structure and enhance electrical conductivity of the composite. This work could pave a new route for developing Ge-based anodes in next-generation lithium ion batteries and high-energy-storage devices. © 2018 Elsevier B.V.

Keyword:

Core-shell structure; Electrochemical property; Hierarchically structural Ge; Lithium ion battery; Nitrogen-doped carbon

Community:

  • [ 1 ] [Chen, C.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 2 ] Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 3 ] [Xiao, T.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 4 ] Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 5 ] [Zhang, W.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 6 ] Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 7 ] [Wang, J.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 8 ] Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 9 ] [Wei, M.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian, 350116, China
  • [ 10 ] Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian, 350116, China

Reprint 's Address:

  • [Wei, M.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou UniversityChina

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Source :

Journal of Electroanalytical Chemistry

ISSN: 1572-6657

Year: 2019

Volume: 832

Page: 182-188

3 . 8 0 7

JCR@2019

4 . 1 0 0

JCR@2023

ESI HC Threshold:184

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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