One-step synthesis of atomic Ru doped ultra-thin Co(OH)2 nanosheets for oxygen evolution reaction in different pH values

被引：12

作者：

Zhu, Yinhai ^{[1
,2
]}

Cao, Dong ^{[1
,2
]}

Liu, Ning ^{[1
,2
]}

Cheng, Daojian ^{[1
,2
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[2] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 44期

关键词：

Atomic Ru; Co(OH)(2) nanosheet; Electrochemical deposition method; Oxygen evolution reaction; Electronic structure; LAYERED DOUBLE HYDROXIDE; EFFICIENT BIFUNCTIONAL ELECTROCATALYSTS; WATER OXIDATION; COBALT; ALKALINE; HYDROGEN; IRON; RUTHENIUM; CATALYSTS; FOAM;

D O I：

10.1016/j.ijhydene.2021.04.088

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Herein, atomic Ru doped ultra-thin Co(OH)(2) nanosheet arrays are firstly synthesized by a one-step electrochemical deposition method. Importantly, the obtained electrocatalyst can display excellent activity for oxygen evolution reaction, which only needs 305 mV at 50 mA cm(-2) in 1 M KOH and 261 mV at 10 mA cm(-2) in 0.1 M KOH. Further mechanism studies disclose that the doping of Ru could reduce the thickness of nanosheets and contribute to the generation of active Co3+ sites by donating electrons from Co to Ru atoms via the Co-O-Ru bonds. This work paves a simple method to fabricate Co based nanosheet catalyst, which may be extended to the preparation of other highly active electrocatalysts. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：22832 / 22841

页数：10

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