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

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

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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 per-former.The polyamide exhibited remarkable attributes,including high redox stability during 500 repet-itive CVs,optical contrast of 61.98％,rapid response times of 1.02 and 1.38 s for coloring and bleaching,EC efficiency of 280 cm2 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 fol-lowing 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 cm2 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％after 500 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.

PolymersPhenoxazineElectrochromicEnergy storageElectrochromic energy storage devices

Catalin-Paul Constantin、Mihaela Balan-Porcarasu、Gabriela Lisa

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"Petru Poni"Institute of Macromolecular Chemistry,Electroactive Polymers & Plasmochemistry Laboratory,41A Grigore Ghica Voda Alley,Iasi 700487,Romania

"Gh.Asachi"Technical University Iasi,Faculty of Chemical Engineering,Bd.Mangeron 71,Iasi 700050,Romania

Ministry of Research,Innovation and Digitization,CNCS-UEFISCDIMinistry of Research,Innovation and Digitization,CNCS-UEFISCDIMinistry of Research,Innovation and Digitization,CNCS-UEFISCDIMinistry of Research,Innovation and Digitization,CNCS-UEFISCDI

PN-Ⅲ-P1-1.1-TE-2021-1110within PNCDI Ⅲcontract number TE 83/2022project number PN-Ⅲ-P2-2.1-PED-20

2024

10.1016/j.jechem.2023.12.026

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.91(4)
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