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Two-dimensional (2D) carbide Ti3C2 was synthesized by exfoliating Ti3AlC2 in HF solution and used for supercapacitive performance investigation in 3 M KOH electrolyte. The specific surface area (SSA) of as-synthesized Ti3C2 was 22.35 m2/g. Ti3C2-based supercapacitor electrodes exhibited good energy storage ability and had a volumetric capacitance 119.8 F/cm3 at the current density of 2.5 A/g. Moreover, the addition of carbon black into Ti3C2 powders greatly improved the performance of Ti3C2-based capacitors because carbon black restrained the preferred orientation of 2D Ti3C2, providing fast ion transport channels, and in turn, decreasing electrical resistance from 16.7 Ω to 3.5 Ω.


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Electrochemical performance of Ti3C2 supercapacitors in KOH electrolyte

Show Author's information Yupeng GAOLibo WANGZhengyang LIYafei ZHANGBaolin XINGChuanxiang ZHANGAiguo ZHOU( )
School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China

Abstract

Two-dimensional (2D) carbide Ti3C2 was synthesized by exfoliating Ti3AlC2 in HF solution and used for supercapacitive performance investigation in 3 M KOH electrolyte. The specific surface area (SSA) of as-synthesized Ti3C2 was 22.35 m2/g. Ti3C2-based supercapacitor electrodes exhibited good energy storage ability and had a volumetric capacitance 119.8 F/cm3 at the current density of 2.5 A/g. Moreover, the addition of carbon black into Ti3C2 powders greatly improved the performance of Ti3C2-based capacitors because carbon black restrained the preferred orientation of 2D Ti3C2, providing fast ion transport channels, and in turn, decreasing electrical resistance from 16.7 Ω to 3.5 Ω.

Keywords:

MXene, Ti3AlC2, two-dimensional (2D) carbide, supercapacitors
Received: 05 January 2015 Accepted: 24 January 2015 Published: 30 May 2015 Issue date: June 2015
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Publication history
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Publication history

Received: 05 January 2015
Accepted: 24 January 2015
Published: 30 May 2015
Issue date: June 2015

Copyright

© The author(s) 2015

Acknowledgements

This work was supported by National Nature Science Foundation of China (51472075, 51205111), Plan for Scientific Innovation Talent of Henan Province (134100510008), Program for Innovative Research Team of Henan Polytechnic University (T2013-4), State Key Laboratory of New Ceramic and Fine Processing Tsinghua University (KF201313), and Opening Project of Henan Key Discipline Open Laboratory of Mining Engineering Materials (MEM12-11).

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