Efficient solar water oxidation by WO3 plate arrays film decorated with CoOx electrocatalyst

被引：27

作者：

Zhan, Faqi ^{[1
,2
]}

Liu, Wenhua ^{[1
,2
]}

Li, Wenzhang ^{[1
,2
]}

Li, Jie ^{[1
,2
]}

Yang, Yahui ^{[3
]}

Li, Yaomin ^{[4
]}

Chen, Qiyuan ^{[1
,2
]}

机构：

[1] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

[2] Key Lab Hunan Prov Met & Mat Proc Rare Met, Changsha 410083, Hunan, Peoples R China

[3] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China

[4] UCL, Dept Chem, 20 Gordon St, London WC1H 0AJ, England

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 28期

基金：

国家高技术研究发展计划(863计划);

关键词：

Solar water oxidation; WO3 plate arrays; CoOx electrocatalyst; OXYGEN-EVOLVING CATALYST; IN-SITU FORMATION; THIN-FILMS; PHOTOELECTROCHEMICAL PROPERTIES; PHOTOANODE; NANOWIRES; NANOPARTICLE; PERFORMANCE; PHOSPHATE; NANORODS;

D O I：

10.1016/j.ijhydene.2016.06.036

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：

We report the synthesis and photoelectrochemical characterization of CoOx oxygen evolution catalyst modified two-dimensional (2D) WO3 plate arrays photoelectrode. The 2D-WO3 plate arrays were prepared perpendicularly on the FTO substrate by hydrothermal method. The CoOx nanoparticles were deposited on the surface of WO3 plate arrays on FTO by chemical deposition process. The CoOx nanoparticles are distributed on the surface of WO3 plates with a diameter of about 20 nm. The CoOx/WO3 film shows enhanced photo electrochemical performance than the bare WO3 film. The highest incident-photon-to current-efficiency (IPCE) value increases from 24.9% to 49.1% when introducing CoOx. The deposited CoOx electrocatalyst on WO3 surface can transfer holes effectively through the cobalt ion valency cycle, suppress the hole's accumulation and recombination at the electrode surface, achieve the superior kinetics and consequently enhance the overall solar water oxidation efficiency. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：11925 / 11932

页数：8

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