期刊
JOURNAL OF ADVANCED CERAMICS
卷 4, 期 2, 页码 130-134出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s40145-015-0143-3
关键词
MXene; Ti3AlC2; two-dimensional (2D) carbide; supercapacitors
资金
- 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]
- Opening Project of Henan Key Discipline Open Laboratory of Mining Engineering Materials [MEM12-11]
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 m(2)/g. Ti3C2-based supercapacitor electrodes exhibited good energy storage ability and had a volumetric capacitance 119.8 F/cm(3) 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 Omega to 3.5 Omega.
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