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One-step electrodeposited Ni3S2/Co9S8/NiS composite on Ni foam as high-performance electrode for supercapacitors.

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Title: One-step electrodeposited Ni3S2/Co9S8/NiS composite on Ni foam as high-performance electrode for supercapacitors.
Authors: Li, Tiansheng1,2 (AUTHOR), Zhao, Zhifeng1 (AUTHOR) zhifengzhao1980@163.com, Su, Zhanhua1 (AUTHOR) su_zhan_hua@163.com, Lin, Shuangyan1 (AUTHOR), Sun, Rui1,2 (AUTHOR), Shang, Yongchen2 (AUTHOR) yongchenshang@163.com
Source: Dalton Transactions: An International Journal of Inorganic Chemistry. 5/28/2023, Vol. 52 Issue 20, p6823-6830. 8p.
Subjects: Energy density, Energy storage, Electrodes, Supercapacitors, Foam, Power density
Abstract: Transition metal sulfides (TMSs) are considered as one of the promising electrode materials due to their fascinating redox reversibility and electronic conductivity. However, volume expansion during the charge/discharge process impedes their practical applications. The reasonable design of TMS electrode materials with unique morphology can improve the energy storage performance. Herein, we prepared the Ni3S2/Co9S8/NiS composite that is in situ grown on Ni foam (NF) via a one-step electrodeposition process. The optimized Ni3S2/Co9S8/NiS-7 shows a superhigh specific capacity of 2785.3 F g−1 at 1 A g−1 and remarkable rate capability. Furthermore, the as-assembled device displays a high energy density of 40.1 W h kg−1 at a power density of 799.3 W kg−1 and a satisfactory stability of 96.6% retention after 5000 cycles. This work provides a facile way to fabricate new TMS electrode materials for high-performance supercapacitors. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Transition metal sulfides (TMSs) are considered as one of the promising electrode materials due to their fascinating redox reversibility and electronic conductivity. However, volume expansion during the charge/discharge process impedes their practical applications. The reasonable design of TMS electrode materials with unique morphology can improve the energy storage performance. Herein, we prepared the Ni3S2/Co9S8/NiS composite that is in situ grown on Ni foam (NF) via a one-step electrodeposition process. The optimized Ni3S2/Co9S8/NiS-7 shows a superhigh specific capacity of 2785.3 F g−1 at 1 A g−1 and remarkable rate capability. Furthermore, the as-assembled device displays a high energy density of 40.1 W h kg−1 at a power density of 799.3 W kg−1 and a satisfactory stability of 96.6% retention after 5000 cycles. This work provides a facile way to fabricate new TMS electrode materials for high-performance supercapacitors. [ABSTRACT FROM AUTHOR]
ISSN:14779226
DOI:10.1039/d3dt00390f