Engineering heterostructure and crystallinity of Ru/RuS2 nanoparticle composited with N-doped graphene as electrocatalysts for alkaline hydrogen evolution

被引：19

作者：

Gao, Xuyun ^{[1
]}

Li, Bo ^{[1
]}

Sun, Xuzhuo ^{[1
]}

Wu, Baofan ^{[1
]}

Hu, Yanping ^{[2
]}

Ning, Zhichao ^{[1
]}

Li, Jun ^{[2
]}

Wang, Ning ^{[2
]}

机构：

[1] Henan Univ Technol, Coll Chem & Chem Engn, Zhengzhou 450001, Peoples R China

[2] Northwest Univ, Coll Chem & Mat Sci, Key Lab Synthet & Nat Funct Mol, Minist Educ, Xian 710069, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2021年 / 32卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Low crystallinity; Ru/RuS2; heterostructure; Graphene; Electrocatalytic hydrogen evolution; Alkaline solution; RU NANOPARTICLES; CARBON NITRIDE; RUTHENIUM; EFFICIENT; NANOSHEETS; MOS2; OXYGEN; DEFECT; NANOCATALYST; DISULFIDE;

D O I：

10.1016/j.cclet.2021.03.053

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Crystalline engineering and heterostructure have attracted much attention as effective strategies to improve the electrocatalytic activity for hydrogen evolution reaction (HER). In this study, a new heterostructure catalyst (Ru/RuS2@N-rGO) with low crystallinity was fabricated by a simple and lowtemperature method for HER in alkaline solution, applying the Na2SO4 as S source and polypyrrole as N source. Optimizing through the controllable crystalline engineering and composition ratio of Ru and RuS2, the Ru/RuS2@N-rGO heterocatalyst at the calcining 500 degrees C revealed highly efficient HER activity with overpotential 18 mV at a current density 10 mA/cm(2) and remarkable stability for 24 h in 1.0 mol/L KOH. This work provides a facile and effective method in designing advanced electrocatalysts for HER in the alkaline electrolytes by synergistically structural and component modulations. (C) 2021 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：3591 / 3595

页数：5

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