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CuCoNi–S anchored CoMoO4/MoO3 forming core–shell structure for high-performance asymmetric supercapacitors.

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Bibliographic Details
Title: CuCoNi–S anchored CoMoO4/MoO3 forming core–shell structure for high-performance asymmetric supercapacitors.
Authors: Li, Tiansheng1 (AUTHOR), Zhao, Zhifeng2 (AUTHOR) zhifengzhao1980@163.com, Su, Zhanhua2 (AUTHOR), Sun, Rui1 (AUTHOR), Li, Xiaofeng1 (AUTHOR) lixiaofeng@hrbnu.edu.cn, Shang, Yongchen1 (AUTHOR) yongchenshang@163.com
Source: Dalton Transactions: An International Journal of Inorganic Chemistry. 11/14/2022, Vol. 51 Issue 42, p16111-16118. 8p.
Subjects: Supercapacitor electrodes, Metal sulfides, Energy density, Energy storage, Transition metals, Oxide electrodes
Abstract: Although the preparation of transition metal sulfides/oxides electrodes has been relatively perfected, it is still challenging to fabricate multi-component transition metal sulfides/oxides core–shell structure electrodes with excellent electrochemical performance. Herein, CoMoO4/MoO3@CuCoNi–S grown on nickel foam (NF) is first synthesized via facile hydrothermal and electrodeposition methods. The CoMoO4/MoO3@CuCoNi–S electrode presents an exceptional specific capacitance (2600.0 F g−1 at 1 A g−1) and 68.3% of its initial capacitance at 10 A g−1. Moreover, a CoMoO4/MoO3@CuCoNi–S//active carbon (AC) device is assembled for determining its electrochemical application. It reveals a high energy density of 42.1 W h kg−1 at a power density of 800.2 W kg−1, an extended voltage window of 1.6 V and excellent stability with 96.9% retention after 5000 cycles at 2 A g−1. This work offers a reference case for the development of multi-component transition metal sulfides/oxides core–shell structure composites for energy storage. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Although the preparation of transition metal sulfides/oxides electrodes has been relatively perfected, it is still challenging to fabricate multi-component transition metal sulfides/oxides core–shell structure electrodes with excellent electrochemical performance. Herein, CoMoO4/MoO3@CuCoNi–S grown on nickel foam (NF) is first synthesized via facile hydrothermal and electrodeposition methods. The CoMoO4/MoO3@CuCoNi–S electrode presents an exceptional specific capacitance (2600.0 F g−1 at 1 A g−1) and 68.3% of its initial capacitance at 10 A g−1. Moreover, a CoMoO4/MoO3@CuCoNi–S//active carbon (AC) device is assembled for determining its electrochemical application. It reveals a high energy density of 42.1 W h kg−1 at a power density of 800.2 W kg−1, an extended voltage window of 1.6 V and excellent stability with 96.9% retention after 5000 cycles at 2 A g−1. This work offers a reference case for the development of multi-component transition metal sulfides/oxides core–shell structure composites for energy storage. [ABSTRACT FROM AUTHOR]
ISSN:14779226
DOI:10.1039/d2dt02532a