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Jing, C., Zhang, Q., Liu, X., Chen, Y., Wang, X., Xia, L., Zeng, H., Wang, D., Zhang, W. and Dong, F. (2019) Design and Fabrication of Hydrotalcite-Like Ternary NiMgAl Layered Double Hydroxide Nanosheets as Battery-Type Electrodes for High-Performance Supercapacitors. RSC Advances, 9, 9604-9612.

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• TITLE: Role of Al(III) in Zn-Based Electrode Synthesis for Supercapacitor

  AUTHORS: Yubin Yang, Yue Yu, Shaomin Zhu, Hongfeng Xu

  KEYWORDS: Supercapacitor, Hydrotalcite, Zn-Based Electrode, Aluminium Ion Doping

  JOURNAL NAME: Materials Sciences and Applications, Vol.11 No.10, October 19, 2020

  ABSTRACT: Supercapacitor is considered as one of the most promising energy storage systems because of its high power density, long life and low production cost. Electrode materials play important roles in the performance of Supercapacitor (SC). In this study, Zn-based hydrotalcite structure materials are prepared by hydrothermal method. The influence of Zn/Al ratio in precursors on electrochemical properties of electrode materials is investigated. The results show that Al(III) promotes the formation of relatively ordered active substances and participates in redox reaction on electrode surface. Specific capacitance of Zn-based electrode reaches 2557 F·g-1 (1.0 A·g-1) at Zn/Al molar ratio of 1:1 in precursors. This method is simple and environmentally friendly. The electrode exhibits excellent electrochemical activity and stability, showing this material application prospect for supercapacitor.