The Heterostructure of Ru2P/WO3/NPC Synergistically Promotes H2O Dissociation for Improved Hydrogen Evolution

被引：214

作者：

Jiang, Xiaoli ^{[1
]}

Jang, Haeseong ^{[2
]}

Liu, Shangguo ^{[1
]}

Li, Zijian ^{[1
]}

Kim, Min Gyu ^{[3
]}

Li, Chuang ^{[1
]}

Qin, Qing ^{[1
]}

Liu, Xien ^{[1
]}

Cho, Jaephil ^{[2
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China

[2] Ulsan Natl Inst Sci & Technol UNIST, Dept Energy & Chem Engn, Dept Energy Engn, Ulsan 44919, South Korea

[3] Pohang Accelerator Lab PAL, Beamline Res Div, Pohang 37673, South Korea

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2021年 / 60卷 / 08期

关键词：

charge transfer; dissociation of water; electrocatalysts; heterostructure; hydrogen evolution reaction; CATALYST; EFFICIENT; DESIGN; ENERGY; OXYGEN; WO3;

D O I：

10.1002/anie.202014411

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Facilitating the dissociation of water and desorption of hydrogen are both crucial challenges for improving the hydrogen evolution reaction (HER) in alkaline media. Herein, we report the synthesis of heterostructure of Ru2P/WO3@NPC (N, P co-doped carbon) by a simple hydrothermal reaction using ruthenium and tungsten salts as precursors, followed by pyrolyzing under an Ar atmosphere. The Ru2P/WO3@NPC electrocatalyst exhibits an outstanding HER activity with an overpotential of 15 mV at a current density of 10 mA cm(-2) and excellent durability in a 1.0 M KOH solution, outperforming state-of-the-art Pt/C and most reported electrocatalysts. Experimental results combined with density functional calculations reveal that the electron density redistribution in Ru2P/WO3@NPC is achieved by electron transfer from NPC to Ru2P/WO3 and from Ru2P to WO3, which directly promotes the dissociation of water on W sites in WO3 and desorption of hydrogen on Ru sites in Ru2P.

引用

页码：4110 / 4116

页数：7

共 53 条

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