Exploring innovative synthetic solutions for advanced polymer-based electrochromic energy storage devices:Phenoxazine as a promising chromophore  

作　　者：Catalin-Paul Constantin Mihaela Balan-Porcarasu Gabriela Lisa 

机构地区：[1]“Petru Poni”Institute of Macromolecular Chemistry,Electroactive Polymers&Plasmochemistry Laboratory,41A Grigore Ghica Voda Alley,Iasi 700487,Romania [2]“Gh.Asachi”Technical University Iasi,Faculty of Chemical Engineering,Bd.Mangeron 71,Iasi 700050,Romania

出　　处：《Journal of Energy Chemistry》2024年第4期433-452,共20页能源化学（英文版）

基　　金：supported by a grant of the Ministry of Research,Innovation and Digitization,CNCS–UEFISCDI,project number PNIII-P1-1.1-TE-2021-1110;PNCDI III,contract number TE 83/2022,and project number PN-III-P2-2.1-PED-2019-3520;PNCDI III,contract number 438PED/2020。

摘　　要：The current investigation offers an innovative synthetic solution regarding electrochromic(EC)and energy storage applications by exploring phenoxazine(POZ)moiety.Subsequently,three POZ-based polymers(polyimide,polyazomethine,and polyamide)were synthesized to ascertain the superior performer.The polyamide exhibited remarkable attributes,including high redox stability during 500 repetitive CVs,optical contrast of 61.98%,rapid response times of 1.02 and 1.38 s for coloring and bleaching,EC efficiency of 280 cm^(2)C^(-1).and decays of the optical density and EC efficiency of only 12.18%and 6.23%after 1000 cycles.Then,the energy storage performance of polyamide PA was tested,for which the following parameters were obtained:74.7 F g^(-1)(CV,scan rate of 10 mV s^(-1))and 118 F g^(-1)(GCD,charging current of 0.1 A g^(-1)).Then,the polyamide was tested in EES devices,which yielded the following EC parameters:an optical contrast of 62.15%,response times of 9.24 and 5.01 s for coloring and bleaching,EC efficiency of 178 cm^(2)C^(-1),and moderate decays of 20.25%and 23.24%for the optical density and EC efficiency after 500 cycles.The energy storage performance included a capacitance of 106 F g^(-1)(CV,scan rate of 0.1 mV s^(-1))and 9.23 F g^(-1)(GCD,charging current of 0.1 A g^(-1)),capacitance decay of 11.9%after500 cycles,and 1.7 V retention after 2 h.Also,two EES devices connected in series powered a 3 V LED for almost 30 s.

关 键 词：POLYMERS PHENOXAZINE Electrochromic Energy storage Electrochromi cenergy storage devices 

分 类 号：TQ317[化学工程—高聚物工业]