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3D‐Stretched Film Ni 3 S 2 Nanosheet/Macromolecule Anthraquinone Derivative Polymers for Electrocatalytic Overall Water Splitting
Author(s) -
Chen Yushan,
Yu Zebin,
Jiang Ronghua,
Huang Jun,
Hou Yanping,
Chen Jianhua,
Zhang Yongqing,
Zhu Hongxiang,
Wang Bing,
Wang Mi
Publication year - 2021
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202101003
Subject(s) - nanosheet , anthraquinone , materials science , polymer , electrode , derivative (finance) , catalysis , macromolecule , nickel , dispersion (optics) , chemical engineering , water splitting , nanotechnology , chemistry , composite material , organic chemistry , metallurgy , physics , biochemistry , optics , photocatalysis , financial economics , engineering , economics
For the first time, a new polymer electrode AQS/S is prepared by compositing Ni 3 S 2 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‖RuO 2 combination.