Crystallographic-Orientation-Dependent Charge Separation of BiVO4 for Solar Water Oxidation

doi:10.1021/acsenergylett.9b00153

	Crystallographic-Orientation-Dependent Charge Separation of BiVO4 for Solar Water Oxidation
	Shi, Wenwen 3,4; Li, Deng 3,4; Liu, Yong 1,3; Shao, Chenyi 3,4; Wang, Shengyang 3; Ding, Chunmei 3; Liu, Taifeng 2; Fan, Fengtao 3; Shi, Jingying 3; Li, Can 3
刊名	ACS ENERGY LETTERS
	2019-04-01
卷号	4 期号:4 页码:825-831
ISSN号	2380-8195
DOI	10.1021/acsenergylett.9b00153
通讯作者	Shi, Jingying(jingyingshi@dicp.ac.cn) ; Li, Can(canli@dicp.ac.cn)
英文摘要	Charge separation plays a crucial role in determining the solar-to-hydrogen conversion efficiency for photoelectrochemical water splitting. Of the factors that affect charge separation, the anisotropic charge transport property of semiconductors shows great potential in promoting charge separation, but it has received little attention. Herein, we report BiVO4 photoanodes with predominant [010] and [121] orientations and demonstrate a crystallographic-orientation-dependent charge separation of BiVO4 for solar water oxidation. We found that a [010]-orientated BiVO4 photoanode generated a photocurrent 2.9 times that of the [121]-orientated one, owing to the significantly improved charge separation. An in-depth investigation of the surface band bending by open-circuit potential and film conductivity by contacting atomic force microscopy reveals that the higher electron mobility along the [010] direction than that of [121] accounts for the improvement in charge separation. This work offers a fundamental insight into charge separation in anisotropic photoanodes for rational design of efficient photoanodes for solar energy conversion.
资助项目	National Natural Science Foundation of China[21573230] ; National Natural Science Foundation of China[21761142018] ; National Key R&D Program of China[2017YFA0204804] ; Pioneer Initiative (B) Projection of CAS[XDB17030200]
WOS关键词	PHOTOANODES ; PERFORMANCE ; HYDROGEN ; FACETS
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000464889300004
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Pioneer Initiative (B) Projection of CAS ; Pioneer Initiative (B) Projection of CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Pioneer Initiative (B) Projection of CAS ; Pioneer Initiative (B) Projection of CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Pioneer Initiative (B) Projection of CAS ; Pioneer Initiative (B) Projection of CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Pioneer Initiative (B) Projection of CAS ; Pioneer Initiative (B) Projection of CAS
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/165614]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Shi, Jingying; Li, Can
作者单位	1.Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Gansu, Peoples R China 2.Henan Univ, Collaborat Innovat Ctr Nano Funct Mat & Applicat, Natl & Local Joint Engn Res Ctr Appl Technol Hybr, Kaifeng 475004, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shi, Wenwen,Li, Deng,Liu, Yong,et al. Crystallographic-Orientation-Dependent Charge Separation of BiVO4 for Solar Water Oxidation[J]. ACS ENERGY LETTERS,2019,4(4):825-831.
APA	Shi, Wenwen.,Li, Deng.,Liu, Yong.,Shao, Chenyi.,Wang, Shengyang.,...&Li, Can.(2019).Crystallographic-Orientation-Dependent Charge Separation of BiVO4 for Solar Water Oxidation.ACS ENERGY LETTERS,4(4),825-831.
MLA	Shi, Wenwen,et al."Crystallographic-Orientation-Dependent Charge Separation of BiVO4 for Solar Water Oxidation".ACS ENERGY LETTERS 4.4(2019):825-831.