Nanostructured AlFeO_(3) thin films as a novel photoanode for photoelectrochemical water splitting

作     者：Xin Sun Min Wang Qi Geng Shuailin Chen Xiaojun Lv Xunlei Ding Meicheng Li 

作者机构：State Key Laboratory of Alternate Electrical Power System with Renewable Energy SourcesSchool of New EnergyNorth China Electric Power UniversityBeijing 102206China School of Mathematics and PhysicsNorth China Electric Power UniversityBeijing 102206China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2024年第17卷第3期

页      面：1075-1085页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：support from the project of State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(Nos.LAPS21004 and LAPS202114) the National Natural Science Foundation of China(Nos.52272200,51972110,52102245,52102203,and 52072121) China Postdoctoral Science Foundation(No.2022M721129) Beijing Science and Technology Project(No.Z211100004621010) Beijing Natural Science Foundation(Nos.2222076 and 2222077) Hebei Natural Science Foundation(No.E2022502022) Huaneng Group Headquarters Science and Technology Project(No.HNKJ20-H88) 2022 Strategic Research Key Project of Science and Technology Commission of the Ministry of Education,the Fundamental Research Funds for the Central Universities(Nos.2022MS030,2021MS028,2020MS023,and 2020MS028) the NCEPU“Double First-Class”Program 

主　　题：AlFeO_(3) photoanode nanosheets photoelectrochemistry onset potential 

摘      要：The earth-abundant and robust aluminum ferrite,AlFeO_(3)(AFO),is mainly studied in the context of ***,we demonstrate that AFO can be used as a stable solar absorber in photoelectrochemical cells for solar water splitting,exhibiting attractive *** is the first report on the photoelectrochemical activity of *** thin-film photoelectrodes prepared by solution-processing methods are composed of vertically oriented thin nanosheets,featuring the rhombohedral symmetry(R3c)and n-type *** as-prepared AFO photoanodes generate a photocurrent density of+0.78 mA·cm^(-2) at 1.23 V *** hydrogen electrode(RHE)with the photocurrent _(onset) potential(U_(onset))close to the flat band potential of 0.5 V *** in the presence of hole ***,the U_(onset) of AFO for solar water splitting coincides with the flat band potential as well,which is rare in n-type inorganic *** also report other properties of AFO associated with photoelectrochemical *** films exhibit a band gap energy of 2.31 eV and positive band edges with low ***,the carrier lifetimes in AFO films are up to millisecond timescales under the mediation of defect *** on the photoelectrochemical behavior and optoelectronic properties,we believe that AFO has great potential for application in photoelectrochemical cells.