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author:

Jiang, Haishun (Jiang, Haishun.) [1] | Chen, Wenjie (Chen, Wenjie.) [2] | Wang, Xu (Wang, Xu.) [3] | Ma, Hong-lin (Ma, Hong-lin.) [4] | Li, Yi (Li, Yi.) [5] (Scholars:李毅) | Tang, Jing (Tang, Jing.) [6] (Scholars:汤儆)

Indexed by:

EI Scopus SCIE

Abstract:

Due to the difficulty of developing noble materials for large-scale applications, transition metal oxide materials have become popular alternatives for the hydrogen evolution reaction. However, compared to commercial Pt/C, poor conductivity and hydrogen evolution activity are common for transition metal oxides, including WO3(-x)based semiconductors, so it is therefore necessary to ameliorate the electrode self-properties to be suitable for H2 production. Here, different ratios of S(2- )and Ni2+ salts are introduced into hexagonal WO3 and Ni(0.4)WO3(-x)S(x) is prepared successfully after oxygen vacancies and W-O-S and Ni-W-O bonds are formed on the surface of the Ni(0.4)WO3(-x)S(x) nanorods. The X-ray photoelectron, Raman and electrochemical impedance spectroscopy results show that the incorporation of Ni and S atoms can increase the number of oxygen vacancies and the conductivity for hydrogen evolution, simultaneously demonstrating that the W-O-S and Ni-W-O bonds are the main active sites of the Ni(0.4)WO3(-x)S(x )nanorods. Density functional theory calculations further indicate that the & UDelta;GH* of NiWO3-xSx is closer to 20 % commercial Pt/C. The Tafel slope reduces to 87.3 mV/dec when approaching the Volmer-Heyrovsky kinetic mechanism reaction. Finally, the onset potential is 53 mV. The overpotential is 173 mV at 10 mA/cm2, which is 68 % lower compared to hexagonal WO3.

Keyword:

Doping and loading Electrocatalysis Hydrogen In -situ Raman Tungsten oxides

Community:

  • [ 1 ] [Jiang, Haishun]Fuzhou Univ, Minist Educ, Coll Chem, Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Peoples R China
  • [ 2 ] [Chen, Wenjie]Fuzhou Univ, Minist Educ, Coll Chem, Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Peoples R China
  • [ 3 ] [Wang, Xu]Fuzhou Univ, Minist Educ, Coll Chem, Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Peoples R China
  • [ 4 ] [Ma, Hong-lin]Fuzhou Univ, Minist Educ, Coll Chem, Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Peoples R China
  • [ 5 ] [Li, Yi]Fuzhou Univ, Minist Educ, Coll Chem, Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Peoples R China
  • [ 6 ] [Tang, Jing]Fuzhou Univ, Minist Educ, Coll Chem, Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Peoples R China
  • [ 7 ] [Tang, Jing]Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Mat, Fuzhou 350108, Peoples R China

Reprint 's Address:

  • [Li, Yi]Fuzhou Univ, Minist Educ, Coll Chem, Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Peoples R China;;[Tang, Jing]Fuzhou Univ, Minist Educ, Coll Chem, Key Lab Analyt Sci Food Safety & Biol, Fuzhou 350116, Peoples R China;;[Tang, Jing]Fuzhou Univ, Fujian Prov Key Lab Electrochem Energy Storage Mat, Fuzhou 350108, Peoples R China;;

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Source :

APPLIED SURFACE SCIENCE

ISSN: 0169-4332

Year: 2023

Volume: 615

6 . 3

JCR@2023

6 . 3 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:49

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 2

SCOPUS Cited Count: 7

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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