Ti1.1V0.7CrxNb1.0Ta0.6C3Tz high-entropy MXene freestanding films for charge storage applications

被引：30
作者：
Etman, Ahmed S. [1 ,2 ]
Zhou, Jie [1 ]
Rosen, Johanna [1 ]
机构：
[1] Linkoping Univ, Dept Phys Chem & Biol IFM, Mat Design, SE-58183 Linkoping, Sweden
[2] Alexandria Univ, Fac Sci, Dept Chem, Alexandria 21321, Egypt
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2022年 / 137卷
关键词：
High entropy; MXene; Zn-ion supercapacitor; Lithium-ion battery; Freestanding; ION; SURFACE;
D O I：
10.1016/j.elecom.2022.107264
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
High-entropy (HE) MXenes are a new emerging class of materials with unique properties, diverse compositions, and potential uses in energy storage devices. Herein, high-entropy MXene, Ti1.1V0.7CrxNb1.0Ta0.6C3Tz (Tz = -F, -O, -OH), freestanding films are prepared and tested as electrodes for Zn-ion hybrid supercapacitors (ZHSC), delivering a capacity up to 77 mAh g-1 (245 mAh cm-3) at 0.5 A g-1 with a capacity retention of 87% after 10,000 cycles. This promising performance in ZHSC is achieved when using Zn(CF3SO3)2 or low-cost ZnCl2 solutions. Furthermore, HE MXene films can be used as a negative electrode for Li-ion batteries with a capacity up to 126 mAh g-1 (400 mAh cm-3) at 0.01 A g-1. This report sheds light on the use of a new class of MXene films for various charge storage applications.
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页数：7
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