Probing the Mechanism of High Capacitance in 2D Titanium Carbide Using In Situ X-Ray Absorption Spectroscopy

被引：445
作者：
Lukatskaya, Maria R. [1 ,2 ]
Bak, Seong-Min [3 ]
Yu, Xiqian [3 ]
Yang, Xiao-Qing [3 ]
Barsoum, Michel W. [1 ,2 ]
Gogotsi, Yury [1 ,2 ]
机构：
[1] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
[2] Drexel Univ, AJ Drexel Nanomat Inst, Philadelphia, PA 19104 USA
[3] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA
来源：
ADVANCED ENERGY MATERIALS | 2015年 / 5卷 / 15期
关键词：
capacitance; carbide; MXene; pseudocapacitance; X-ray absorption spectroscopy (XAS); MANGANESE OXIDE; STORAGE; FILMS; RELEVANCE; MXENE;
D O I：
10.1002/aenm.201500589
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Electrochemical in situ X-ray absorption spectroscopy (XAS) of 2D titanium carbide MXene is used to probe the mechanism of high capacitance of Ti3C2Tx MXene. Changes in the Ti oxidation state are detected during cycling, confirming that most of the capacitance of Ti3C2Tx is due to changes in the Ti oxidation state, i.e., pseudocapacitance. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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页数：4
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