含木质素的纳米纤维素/聚吡咯复合膜的制备及其电容性能研究

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关键词：杨木化学机械浆；含木质素的纳米纤维素；膜电极；电容性能中图分类号：TS7 文献标识码：A DOI：10.11980/j.issn.0254-508X.2025.10.012

Preparationand CapacitivePerformance Studyof theLignin-containingCellulose Nanofibril/PolypyrroleCompositeFilm

XU Feng*WANG Dongxing CI XiaoleiSHAO Xuejun WANG Yuebin LIU Chunlan TIAN BaonongGE Yinkai （Shandong Century Sunshine Paper Group Co.，Ltd.，Weifang，Shandong Province，） （*E-mail： xufeng1038@126. com；cixl@sunshinepaper.com. cn）

Abstract：Inthisstudy，lignin-containngcelllosenanofibril（LCNF）waspreparedusingpoplarchemi-mechanicalpulpastheramaterial，whichwassqutiallsujectedto2，26，-etrametylpiperidin-Nide （MPO）rdicaloidatio，igheartratd high-pressure homogenization.TheLCNFwasthenusedasaflexiblesubstrate toprepareLCNF/polypyrole（LNP）compositefilmelectrodes.Furthermore，theefectsofTEMPOoxidationdegreeonthresidualigincontent，yieldandmorphologyofLCNF，swellason themicrostructureofLNPcompositefimereinvestigated，andtestructure-activityelationshipbetweenLPstructureandapacitanceperformancewasanalyzed.TheresultsshowedthatasthedegreeofTEMPOoxidationincreased，thelignincontentandsizeofthe LCNFdecreasedgradually.ThemorphologyofLCNFandLNPcompositefilmcouldbealteredbytheligninthroughtheregulatiooffibrilation.Thisouldfurthfctteicrosructureofompositefiloughsionereyproingitsapaciaeefo mance.Inaddition，lignincouldalsoprovidepseudocapacitanceofLPcompositefiviathereversibleconversionof tequinoe/y droquinone structure.Moreover，the supercapacitor assembled with the LNP-13. 8% composite film exhibited a power density of 499.9 （204号 μW/cm2 and an energy density of 88.6μWh/cm2 ， demonstrating excellent energy storage capability.

Key words：poplar chemi-mechanical pulp；lignin-containing cellose nanofibril;film electrodes；capacitive performance

近年来，随着科技的迅猛发展和人们生活水平的快速提高，柔性智能可穿戴电子设备迅速发展，这促进了柔性储能设备的发展。（剩余15282字）