High-performance photoelectrochemical cells with MoS2 nanoflakes/TiO2 photoanode on 3D porous carbon spun fabric  

作　　者：Hyunjin Cho Ji-Yeon Kim Dong Su Shin Joo Song Lee Jaeho Shim In-Ho Lee Won Kook Choi Namhee Kwon Soohyung Park Mehmet Suha Yazici Young Jae Park Ju Hee You Seok-Ho Seo Donghee Park Dong Ick Son 

机构地区：[1]Institute of Advanced Composite Materials,Korea Institute of Science and Technology,92 Chudong-ro,Bongdong-eup,Wanju-gun,Jeollabuk-do,55324,Republic of Korea [2]Center for Opto-Electronic Materials and Devices,Post-Silicon Semiconductor Institute,Korea Institute of Science and Technology,Hwarangro 14 Gil 5,Seongbuk Gu,Seoul,02792,Republic of Korea [3]KIST School,Department of Nanomaterials and Nano Science,University of Science and Technology(UST),217,Gajeong-ro,Yuseong-gu,Daejeon,34113,Republic of Korea [4]Advanced Analysis Center,Korea Institute of Science and Technology,Hwarangro 14 Gil 5,Sungbuk Gu,Seoul,02792,Republic of Korea [5]Energy Institute,Istanbul Technical University(ITU),Maslak,34467 Istanbul,Türkiye [6]Division of Technology Business,National Institute of Science and Technology,77,Cheongam-ro,Nam-Gu,Pohang,Gyeongbuk,37673,Republic of Korea

出　　处：《Advanced Sensor and Energy Materials》2024年第1期1-10,共10页先进传感器与能源材料（英文）

基　　金：supported by the KIST Institution Program(2E32634,2E33323,2E32942);Brain Pool program funded by the Ministry of Science and ICT through the NRF(2020H1D3A1A04080324);Cooperation foundation creation project through the National Research Foundation of Korea(NRF)funded by the Ministry of Science and ICT(RS-2023-00239634).

摘　　要：A solar-driven photoelectrochemical(PEC)cell is emerging as one of the promising clean hydrogen generation systems.Engineering of semiconductor heterojunctions and surface morphologies of photoelectrodes in a PEC cell has been a primitive approach to boost its performance.This study presents that a molybdenum disulfide(MoS_(2))nanoflakes photoanode on 3-dimensional(3D)porous carbon spun fabric(CSF)as a substrate effectively enhances hydrogen generations due to sufficiently enlarged surface area.MoS_(2)is grown on CSFs utilizing a hydrothermal method.Among three different MoS_(2)coating morphologies depending on the amount of MoS_(2)precursor and hydrothermal growth time,film shape MoS_(2)on CSFs had the largest surface area,exhibiting the highest photocurrent density of 26.48 mA/cm^(2)and the highest applied bias photon-to-current efficiency(ABPE)efficiency of 5.32%at 0.43 VRHE.Furthermore,with a two-step growth method of sputtering and a subsequent hydrothermal coating,continuous TiO_(2)/MoS_(20 heterojunctions on a porous CSF further promoted the photoelectrochemical performances due to their optimized bandgap alignments.Enlarged surface area,enhanced charge transfer,and utilization of visible light enable a highly efficient MoS_(2)/TiO_(2)/CSF photoanode with a photocurrent density of 33.81 mA/cm^(2)and an ABPE of 6.97%at 0.87 VRHE.The hydrogen generation amount of the PEC cell with MoS_(2)/TiO_(2)/CSF photoanode is 225.4μmol/L after light irradiation of 60 s.

关 键 词：Photoelectrochemical cell PHOTOANODE MoS_(2) TiO_(2 3D porous carbon spun fabric Conformal coating 

分 类 号：TG1[金属学及工艺—金属学]