Instant formation of excellent oxygen evolution catalyst film via controlled spray pyrolysis for electrocatalytic and photoelectrochemical water splitting

作     者：Na An Hengzheng Tian Yang Zhou Yalong Zou Hao Xiu Yufeng Cao Ying Wang Jianming Li Deyu Liu Yongbo Kuang Na An;Hengzheng Tian;Yang Zhou;Yalong Zou;Hao Xiu;Yufeng Cao;Ying Wang;Jianming Li;Deyu Liu;Yongbo Kuang

作者机构：School of Materials Science and Chemical EngineeringNingbo UniversityNingbo 315211ZhejiangChina Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201ZhejiangChina Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100000China Petroleum Geology Research and Laboratory CenterResearch Institute of Petroleum Exploration&Development(RIPED)PetroChinaBeijing 100083China 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2022年第31卷第3期

页      面：657-665,I0018页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(NSFC,21805298,21905288,51904288) the Zhejiang Provincial Natural Science Foundation(Z21B030017) the K.C.Wong Education Foundation(GJTD-201913) the Ningbo major special projects of the Plan‘‘Science and Technology Innovation 2025”(2018B10056,2019B10046) the Ningbo 3315 Program。 

主　　题：Spray pyrolysis Oxygen evolution catalysts Layered oxyhydroxide Heterogeneous structure Thin film 

摘      要：The retarded kinetics of oxygen evolution on electrodes is a bottleneck for electrochemical energy conversion and storage systems.NiFe-based electrocatalysts provide a cost-effective choice to confront this challenge.However,there is a lack of facile techniques for depositing compact catalytic films of high coverage and possessing a state-of-the-art performance,which is especially desired in photoelectrochemical(PEC)systems.Herein,we demonstrate a spray pyrolysis(SP)route to address this issue,featuring the kinetic selective preparation towards the desired catalytic-active material.Differing from reported SP protocols which only produce inactive oxides,this approach directly generates a unique composite film consisting of NiFe layered oxyhydroxides and amorphous oxides,exhibiting an overpotential as small as 255 mV(10 mA cm^(−2))and a turnover frequency of∼0.4 s^(−1)per metal atom.By using such a facile protocol,the surface rate-limiting issue of BiVO_(4)photoanodes can be effectively resolved,resulting in a charge injection efficiency of over 90%.Considering this deposition directly start from simple nitrates but only takes several seconds to complete,we believe it can be developed as a widely applicable and welcomed functionalization technique for diverse electrochemical devices.