Issue 33, 2022

Reduced Mo-doped NiCo2O4 with rich oxygen vacancies as an advanced electrode material in supercapacitors

Abstract

Reduced Mo-doped NiCo2O4 (R-Mo-NiCo2O4) was facilely prepared through a dual-defect strategy. Mo-doped NiCo layered double hydroxide (Mo-NiCo-LDH) was used as the precursor and calcined in an air atmosphere, and the resultant Mo-doped NiCo2O4 (Mo-NiCo2O4) was further reduced by NaBH4. The number of oxygen vacancies in the obtained R-Mo-NiCo2O4 is significantly increased by both Mo doping and NaBH4 reduction, resulting in greatly enhanced electrical conductivity and facilitated charge transfer. Finally, the R-Mo-NiCo2O4 was used as the electrode material in supercapacitors, which displayed greatly improved electrochemical performance, such as higher specific capacity (285.8 mA h gāˆ’1 at 1 A gāˆ’1), rate capability (86.1%) and cycling stability (87.4% retention after 5000 cycles).

Graphical abstract: Reduced Mo-doped NiCo2O4 with rich oxygen vacancies as an advanced electrode material in supercapacitors

Supplementary files

Article information

Article type
Communication
Submitted
28 Feb 2022
Accepted
29 Mar 2022
First published
30 Mar 2022

Chem. Commun., 2022,58, 5120-5123

Reduced Mo-doped NiCo2O4 with rich oxygen vacancies as an advanced electrode material in supercapacitors

C. Wang, X. Wu, Y. Qin and Y. Kong, Chem. Commun., 2022, 58, 5120 DOI: 10.1039/D2CC01215D

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