High-performance bulk heterojunction-based photocathode with facile architecture for photoelectrochemical water splitting  

作　　者：Yanling Wu Deyu Liu Huanglong Zhuang Jiabo Le Yongbo Kuang 

机构地区：[1]Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Fujian Provincial Key Laboratory of Featured Biochemical and Chemical Materials,Ningde Normal University,Ningde 352100,China

出　　处：《Chinese Chemical Letters》2023年第1期182-186,共5页中国化学快报（英文版）

基　　金：the financial support by the National Natural Science Foundation of China(NSFC,21905288,and 51904288);the Zhejiang Provincial Natural Science Foundation(No.LZ21B030017);K.C.Wong Education Foundation(No.GJTD-2019-13);Ningbo Major Special Projects of the Plan“Science and Technology Innovation 2025”(Nos.2018B10056,and 2019B10046);Ningbo 3315 Program,and Natural Science Foundation of Fujian Province(No.2021J011150)。

摘　　要：Organic semiconductors are promising candidates as photoactive layers for photoelectrodes used in photoelectrochemical(PEC)cells due to their excellent light absorption and efficient charge transport properties with the help of interfacial materials.However,the use of multilayers will make the charge transfer mechanism more complicated and decrease the PEC performance of the photoelectrode caused by the increased contact resistance.In this work,a PM6:Y6 bulk heterojunction(BHJ)-based photocathode is fabricated for efficient PEC hydrogen evolution reaction(HER)in an acidic aqueous solution.With RuO_(2)as an interfacial modification layer,the photocathode with a simple structure(fluorine-doped tin oxide(FTO)/PM6:Y6/RuO_(2))generates a maximum photocurrent density up to-15 m A/cm^(2)at 0 V vs.reference hydrogen electrode(RHE),outperforming all previously reported BHJ-based photocathodes in terms of PEC performance.The highest ratiometric power-saved efficiency of 3.7%is achieved at 0.4 V vs.RHE.

关 键 词：PHOTOCATHODES Ruthenium oxide Bulk heterojunctions Hydrogen evolution Photoelectrochemical cells 

分 类 号：TQ116.2[化学工程—无机化工]