Jump to main content
Jump to site search

Issue 28, 2017
Previous Article Next Article

A quasi-solid-state Li-ion capacitor with high energy density based on Li3VO4/carbon nanofibers and electrochemically-exfoliated graphene sheets

Author affiliations

Abstract

Electrochemical capacitors are playing increasing roles in our daily life but their low energy densities limit their wide applications. The appearance of Li-ion capacitors (LICs) is regarded as the beginning of a new era of increased energy densities in the field of electrochemical capacitors. However, it is a great challenge to find a suitable anode material with superior electrochemical performance. In addition, the intrinsic instability of the liquid electrolytes used in LICs can easily result in leakage of the electrolyte and causes a serious safety issue. Here, a quasi-solid-state LIC is fabricated by applying Li3VO4/carbon nanofibers as the anode and electrochemically-exfoliated graphene sheets as the cathode in a gel polymer electrolyte. It achieves an energy density of 110 W h kg−1 and a good cycling performance. Our results demonstrate that quasi-solid-state LICs provide a key system acting as a bridge between conventional Li-ion batteries and supercapacitors, while meeting the high safety demands of electronic devices.

Graphical abstract: A quasi-solid-state Li-ion capacitor with high energy density based on Li3VO4/carbon nanofibers and electrochemically-exfoliated graphene sheets

Back to tab navigation

Supplementary files

Publication details

The article was received on 06 May 2017, accepted on 22 Jun 2017 and first published on 22 Jun 2017


Article type: Paper
DOI: 10.1039/C7TA03920D
Citation: J. Mater. Chem. A, 2017,5, 14922-14929
  •   Request permissions

    A quasi-solid-state Li-ion capacitor with high energy density based on Li3VO4/carbon nanofibers and electrochemically-exfoliated graphene sheets

    F. Wang, Z. Liu, X. Yuan, J. Mo, C. Li, L. Fu, Y. Zhu, X. Wu and Y. Wu, J. Mater. Chem. A, 2017, 5, 14922
    DOI: 10.1039/C7TA03920D

Search articles by author

Spotlight

Advertisements