Volume 10, Issue 11 2200809
Research Article

Facile Sulfuration Route to Enhance the Supercapacitor Performance of 3D Petal-like NiV-Layered Double Hydroxide

Guiquan Liu

Guiquan Liu

School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021 P. R. China

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Guorong Wang

Corresponding Author

Guorong Wang

School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021 P. R. China

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Xin Guo

Xin Guo

School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021 P. R. China

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Xuqiang Hao

Xuqiang Hao

School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021 P. R. China

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Kai Wang

Kai Wang

School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021 P. R. China

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Zhiliang Jin

Corresponding Author

Zhiliang Jin

School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021 P. R. China

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First published: 25 August 2022
Citations: 4

Abstract

The charge conductivity properties and ionic delivery of pseudocapacitive materials are important factors for the charge storage process. Herein, the new petal-like S-NiV-layered double hydroxide (LDH) materials are successfully synthesized by a presynthetic solvothermal reaction and a sulfidation modification procedure. The specific capacitance of the new petal-like S-NiV-LDHs electrode reaches 1403 F g−1 when the current density is 1 A g−1, and this is attributed to Ni3S2 formed on the surface of NiV-LDHs. When the current density is up to 20 A g−1, the rate performance of the new petal-like S-NiV-LDHs electrode is 65.04%. It can be seen that the comprehensive electrochemical performance of the new petal-like S-NiV-LDHs is better than the petal-like NiV-LDHs before modification. When the power density of the S-NiV-LDHs//activated carbon asymmetric supercapacitor cell is 2278.48 W kg−1, its energy density is 20 Wh kg−1. The innovation of this work lies in that, based on the microstructure of petal-like NiV-LDHs with rich mesoporous structure, the surface of petal-like NiV-LDHs is slightly sulfurized, which makes the new petal-like S-NiV-LDHs electrode material have smaller electrochemical impedance, richer oxidation states, richer chemical active sites, better energy storage, and cycle stability.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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