CuCoNi–S anchored CoMoO4/MoO3 forming core–shell structure for high-performance asymmetric supercapacitors. Issue 42 (11th October 2022)

• Record Type: Journal Article
• Authors: Li, Tiansheng; Zhao, Zhifeng; Su, Zhanhua; Sun, Rui; Li, Xiaofeng; Shang, Yongchen
• Is Part Of: Dalton transactions. Volume 51:Issue 42(2022)
• Page Start: 16111
• Page End: 16118
• Publication Date: 2022-10-11
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2dt02532a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : CoMoO4 /MoO3 @CuCoNi–S is prepared by hydrothermal and electrodeposition methods. It offers promising supercapacitor properties. 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.