Enhanced photoelectrochemical water splitting with a donor-acceptor polyimide  

作　　者：Hongyu QU Xiaoyu XU Longfei HONG Xintie WANG Yifei ZAN Huiyan ZHANG Xiao ZHANG Sheng CHU 

机构地区：[1]Key Laboratory of Energy Thermal Conversion and Control of the Ministry of Education,School of Energy and Environment,Southeast University,Nanjing 210096,China [2]State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China

出　　处：《Frontiers in Energy》2024年第4期463-473,共11页能源前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.22005048);the Natural Science Foundation of Jiangsu Province(Grant No.BK20200399);the Fundamental Research Funds for the Central Universities(Grant No.2242023K40008);the State Key Laboratory of Clean Energy Utilization of Zhejiang University(Open Fund Project No.ZJUCEU2022003).

摘　　要：Polyimide(PI)has emerged as a promising organic photocatalyst owing to its distinct advantages of high visible-light response,facile synthesis,molecularly tunable donor-acceptor structure,and excellent physicochemical stability.However,the synthesis of high-quality PI photoelectrode remains a challenge,and photoelectrochemical(PEC)water splitting for PI has been less studied.Herein,the synthesis of uniform PI photoelectrode films via a simple spin-coating method was reported,and their PEC properties were investigated using melamine as donor and various anhydrides as acceptors.The influence of the conjugate size of aromatic unit(phenyl,biphenyl,naphthalene,perylene)of electron acceptor on PEC performance were studied,where naphthalene-based PI photoelectrode exhibited the highest photocurrent response.This is resulted from the unification of widerange light absorption,efficient charge separation and transport,and strong photooxidation capacity.This paper expands the material library of polymer films for PEC applications and contributes to the rational design of efficient polymer photoelectrodes.

关 键 词：polyimide(PI)film PHOTOELECTROCHEMISTRY band structure engineering aromatic unit 

分 类 号：O646[理学—物理化学]