Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (4): 821.doi: 10.7503/cjcu20190581

• Material Chemistry • Previous Articles     Next Articles

Synthesis and Lithium-storage Characteristics of Three-dimensional Cross-linked Graphene Nanofibers

JI Tianyi1,2,LIU Xiaoxu1,*,ZHAO Jiupeng3,LI Yao4,*()   

  1. 1. School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi’an 710021, China;
    2. College of Mining Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China
    3. School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
    4. Institute of Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, China
  • Received:2019-11-11 Online:2020-04-10 Published:2020-02-21
  • Contact: Xiaoxu LIU,Yao LI E-mail:xiaoxuliu@sust.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(51761135123);the China Postdoctoral Science Foundation(2018M630339);the College Students’ Innovation and Entrepreneurship Training Program of Heilongjiang Province, China(201810219033)

Abstract:

High crystalline 3D cross-linked graphene nanofibers(3DCGNs) were self-assembled from graphene oxide at high temperature. SEM and TEM tests show that the 3DCGNs have solid-core structure with a diameter less than 100 nm. The layers of graphene are arranged in order, with higher crystallinity. The material served as a negative electrode for lithium ion battery and exhibited excellent electrochemical properties, such as high first Coulombic efficiency(72.4%) and storage lithium capacity(692.7 mA·h/g at 0.1C), good rating performance(373.3 mA·h/g at 20C) and outstanding cycling stability(capacity retention of 84.1% after 1000 cycles) and so on. This research also adds new ideas for the preparation of graphene-based electrode materials.

Key words: 3D cross-linked graphene, Nanofibers, Lithium ion battery

CLC Number: 

TrendMD: