期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 164, 期 4, 页码 A709-A713出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0641704jes
关键词
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资金
- National Nature Science Foundation of China [51472075, 21671195]
- Program for Innovative Research Team (in Science and Technology) in the University of Henan Province [16IRTSTHN005]
- Plan for Scientific Innovation Talent of Henan Province [134100510008]
- Program for Innovative Research Team of Henan Polytechnic University [T2013-4]
- Fundamental Research Funds for the Universities of Henan Province [NSFRF140401, 140601]
- Ningbo Natural Science Foundation [2016A610275]
A novel high-purity V2C MXene two-dimensional carbide, was successfully synthesized by etching V2AlC with sodium fluoride and hydrochloric acid at 90 degrees C for 72 h. From the analysis of X-ray diffraction, energy dispersive spectra, and X-ray photoelectron spectroscopy, the purity of as-synthesized V2C MXene was > 90 wt% with a few impurities of Na5Al3F14 and V2AlC. The V2C MXene made by this method was much purer than those made by HF etching at room temperature. The as-prepared V2C MXene showed excellent electrochemical properties as anode of lithium-ion batteries. The capacity can be 260 mAh g(-1) if discharged under 370 mA g(-1). The capacity was increased with charge cycles at high charge rate (500 mA g(-1)). It was suggested that V2C with high purity can be promising anode material with excellent performance. (C) 2017 The Electrochemical Society. All rights reserved.
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