1. High-performance flexible energy storage: Decorating wrinkled MXene with in situ grown Cu2O nanoparticles.
- Author
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Qiao, Yongna, Xie, Wanyi, Yu, Fei, Yu, Jiali, Yao, Pingping, Fan, Zhimin, Zhu, Tang, Zhu, Caizhen, and Xu, Jian
- Subjects
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ENERGY storage , *SUPERCAPACITORS , *SUPERCAPACITOR electrodes , *COPPER , *ENERGY density , *STRUCTURAL stability , *CHARGE transfer - Abstract
The precise design and fabrication of electrode materials is important for the development of high-performance flexible supercapacitors. Cu 2 O/MXene film electrodes with an interconnected conductive network structure are prepared in this work by in situ growth of Cu 2 O nanoparticles in a Ti 3 C 2 Tx dispersion, followed by alkali induction and vacuum filtration. The interconnected crimpled Ti 3 C 2 Tx structure produced by alkali induction not only works as the self-supported conductive network of the thin film electrode but also demonstrates sufficient open pores and high surface area, which can promote electrolyte penetration and increase active sites for energy storage. The synergy between Cu 2 O nanoparticles and the crimpled Ti 3 C 2 Tx framework leads to good structural stability and electrochemical performance. The results show that the Cu 2 O/MXene electrode exhibits a high specific area capacitance of 1518 mF cm−2 in 1 M LiCl electrolyte. In addition, the all-solid-state flexible supercapacitor fabricated with the Cu 2 O/MXene electrode exhibits excellent cyclic stability and flexibility; the capacity retains 94.3% after 10,000 charge and discharge cycles, and the energy storage performance remains stable after 50 mechanical bending cycles. • In situ growing Cu 2 O in Ti 3 C 2 Tx dispersion helps achieve higher energy density. • The interconnected network structure benefits charge transfer. • The interaction between Cu 2 O and MXene improve the energy storage performance. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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