Tough Hydrogen Bonding Crosslinked Poly(3-fluorothiophene)Network via Electrosynthesis for High-performance Electrochromic Supercapacitors  

作　　者：Chun-Hui Du Yu-Hua Xu Hui Li Zhi-Xin Wu Han-Jun Yang Xi-Mei Liu Bao-Yang Lu Guang-Ming Nie Ge Zhang 

机构地区：[1]Jiangxi Key Lab of Flexible Electronics,Flexible Electronics Innovation Institute,Jiangxi Science&Technology Normal University,Nanchang,330013,China [2]Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science,MOE,State Key Laboratory Base of Eco-chemical Engineering,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao,266042,China

出　　处：《Chinese Journal of Polymer Science》2024年第11期1749-1757,I0011,共10页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52103214,52364039 and 51973102);Natural Science Foundation of Jiangxi Provincial(Nos.GJJ2201301 and 20232BAB202044);Natural Science Foundation of Shandong Province(Nos.ZR2022MB042 and ZR2019MB067);Innovation Ability Improvement Project ofScience and Technology Small and Medium-Size Enterprise in Shandong Province(No.2022TSGC1121);Qinghai Provincial Basic Research Program(No.2021-ZJ-710);Scientific Fund of Jiangxi Science&Technology Normal University(No.2022QNBJRC004);Talent Fund of QUST(2020)。

摘　　要：As a type of bi-functional device,electrochromic supercapacitors(EC-SCs)have attracted extensive attention in diverse applications such as flexible electronics.However,despite recent encouraging progress,rational design and development of high-performance EC-SC materials with desirable stability remain challenging for practical applications.Here,we propose a fluorination strategy to develop high-performance EC-SC materials with tough hydrogen bonding cross-linked intermolecular polymer network by one-step electrosynthesis of 3-fluorothiophene.The electrosynthesized free-standing poly(3-fluorothiophene)(PFT)films simultaneously achieve high electrochromic performance(optical contrast 42%at 560 nm with reversible color changes between purple and blue),and good capacitance property(290 F·g^(-1),1 A·g^(-1)),as well as outstanding cyclic stability(<2%reduction after 20000 cycles).We further demonstrate the fabrication of PFT-based flexible electrochromic supercapacitor devices(FESDs),and the resultant devices can be used to visually monitor the energy storage state in real-time and maintain outstanding stability under mechanical distortion like bending.Such a tough fluorination hydrogen bonding cross-linking strategy may provide a new design concept for high-performance EC-SC materials and reliable FESDs toward practical applications.

关 键 词：Flexible electrochromic-supercapacitors Conducting polymers Hydrogen bonding crosslinking ELECTROSYNTHESIS POLYTHIOPHENE 

分 类 号：TM53[电气工程—电器] TQ317[化学工程—高聚物工业]