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Lattice distortion induced internal electric field in TiO2 photoelectrode for efficient charge separation and transfer

文献类型：期刊论文

作者Hu, Yuxiang1,2; Pan, Yuanyuan3; Wang, Zhiliang1,2; Lin, Tongen1,2; Gao, Yuying4; Luo, Bin1,2; Hu, Han3; Fan, Fengtao4; Liu, Gang5,6; Wang, Lianzhou1,2
刊名NATURE COMMUNICATIONS
出版日期2020-05-01
卷号11期号:1页码:10
ISSN号2041-1723
DOI10.1038/s41467-020-15993-4
通讯作者Wang, Zhiliang(zhiliang.wang@uq.edu.au) ; Liu, Gang(gangliu@imr.ac.cn) ; Wang, Lianzhou(l.wang@uq.edu.au)
英文摘要Providing sufficient driving force for charge separation and transfer (CST) is a critical issue in photoelectrochemical (PEC) energy conversion. Normally, the driving force is derived mainly from band bending at the photoelectrode/electrolyte interface but negligible in the bulk. To boost the bulky driving force, we report a rational strategy to create effective electric field via controllable lattice distortion in the bulk of a semiconductor film. This concept is verified by the lithiation of a classic TiO2 (Li-TiO2) photoelectrode, which leads to significant distortion of the TiO6 unit cells in the bulk with well-aligned dipole moment. A remarkable internal built-in electric field of 2.1x10(2)Vm(-1) throughout the Li-TiO2 film is created to provide strong driving force for bulky CST. The photoelectrode demonstrates an over 750% improvement of photocurrent density and 100mV negative shift of onset potential upon the lithiation compared to that of pristine TiO2 film. The driving force for charge transfer in photoelectrochemical systems is typically derived from band bending at a surface-electrolyte interface. In this work, battery-type lithiation of TiO2 generates a built-in electric field in the bulk material, giving a 750% enhancement in photocurrent density.
资助项目Australian Research Council ; Australian Government Research Training Program Scholarship ; UQ-Centennial Scholarship ; ARC ; National Natural Science Foundation of China[51629201] ; National Natural Science Foundation of China[51825204]
WOS研究方向Science & Technology - Other Topics
语种英语
出版者NATURE PUBLISHING GROUP
WOS记录号WOS:000531425700010
资助机构Australian Research Council ; Australian Government Research Training Program Scholarship ; UQ-Centennial Scholarship ; ARC ; National Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/139207]  
专题金属研究所_中国科学院金属研究所
通讯作者Wang, Zhiliang; Liu, Gang; Wang, Lianzhou
作者单位1.Univ Queensland, Australian Inst Bioengn & Nanotechnol, Nanomat Ctr, Brisbane, Qld 4072, Australia
2.Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia
3.China Univ Petr East China, Coll Chem Engn, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat iChEM, State Key Lab Catalysis, Dalian 116023, Peoples R China
5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
6.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Yuxiang,Pan, Yuanyuan,Wang, Zhiliang,et al. Lattice distortion induced internal electric field in TiO2 photoelectrode for efficient charge separation and transfer[J]. NATURE COMMUNICATIONS,2020,11(1):10.
APA Hu, Yuxiang.,Pan, Yuanyuan.,Wang, Zhiliang.,Lin, Tongen.,Gao, Yuying.,...&Wang, Lianzhou.(2020).Lattice distortion induced internal electric field in TiO2 photoelectrode for efficient charge separation and transfer.NATURE COMMUNICATIONS,11(1),10.
MLA Hu, Yuxiang,et al."Lattice distortion induced internal electric field in TiO2 photoelectrode for efficient charge separation and transfer".NATURE COMMUNICATIONS 11.1(2020):10.

入库方式： OAI收割

来源：金属研究所

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