3D-Stretched Film Ni3 S2 Nanosheet/Macromolecule Anthraquinone Derivative Polymers for Electrocatalytic Overall Water Splitting

Yushan Chen; Zebin Yu; Ronghua Jiang; Jun Huang; Yanping Hou; Jianhua Chen; Yongqing Zhang; Hongxiang Zhu; Bing Wang; Mi Wang

doi:10.1002/smll.202101003

3D-Stretched Film Ni₃ S₂ Nanosheet/Macromolecule Anthraquinone Derivative Polymers for Electrocatalytic Overall Water Splitting

Small. 2021 Jul;17(28):e2101003. doi: 10.1002/smll.202101003. Epub 2021 Jun 13.

Authors

Yushan Chen¹, Zebin Yu¹, Ronghua Jiang², Jun Huang³, Yanping Hou¹, Jianhua Chen¹, Yongqing Zhang⁴, Hongxiang Zhu⁵, Bing Wang⁶, Mi Wang¹

Affiliations

¹ School of Resources, Environment and Materials, Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, Guangxi University, Nanning, 530004, P. R. China.
² School of Chemical and Environmental Engineering, Shaoguan University, Shaoguan, 512005, P. R. China.
³ College of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, P. R. China.
⁴ School of Environment and Energy, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510640, P. R. China.
⁵ Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, 530004, P. R. China.
⁶ College of Resource and Environment Engineering, Guizhou University, Guiyang, 550025, P. R. China.

PMID: 34121331
DOI: 10.1002/smll.202101003

Abstract

For the first time, a new polymer electrode AQS/S is prepared by compositing Ni₃ S₂ nanosheets and macromolecular anthraquinone derivative (AQD) supported on nickel foam with flying colors. The AQS/S exhibits high crystalline structure and abundant S defects. Density of state calculation shows that AQD has stable internal bonding and easy external bonding with metals, conducive to the dispersion of metal reaction sites, ensuring excellent activity and high stability. Under 1.0 m KOH solution, ultralow overpotentials of 62 and 133 mV at 10 mA cm^-2 on AQS/S for hydrogen evolution reaction and on activated AQS/S (A-AQS/S) for oxygen evolution reaction, respectively, are achieved. 100 h chronopotentiometry and the cyclic voltammetry tests show that catalysts have high durability. The AQS/S‖A-AQS/S two-electrode system is also found to have good electrocatalytic activity for 1.43 V to get 10 mA cm^-2 in overall water splitting, better than the state-of-the-art 20% Pt/C‖RuO₂ combination.

Keywords: Ni 3S 2 nanosheets; anthraquinone derivatives; functional groups; hydrogen evolution reaction; overall water splitting; oxygen evolution reaction; polymers.

Abstract

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