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author:

Chen, Congrong (Chen, Congrong.) [1] | Xiao, Tingling (Xiao, Tingling.) [2] | Zhang, Weifeng (Zhang, Weifeng.) [3] | Wang, Jianbiao (Wang, Jianbiao.) [4] | Wei, Mingdeng (Wei, Mingdeng.) [5] (Scholars:魏明灯)

Indexed by:

EI Scopus SCIE

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.

Keyword:

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

Community:

  • [ 1 ] [Wei, Mingdeng]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
  • [ 2 ] [Wei, Mingdeng]Fuzhou Univ, Inst Adv Energy Mat, Fuzhou 350116, Fujian, Peoples R China

Reprint 's Address:

  • 魏明灯

    [Wei, Mingdeng]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China

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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 Discipline: CHEMISTRY;

ESI HC Threshold:184

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 7

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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