3D printing encouraging desired in-situ polypyrrole seed-polymerization for ultra-high energy density supercapacitors  

作　　者：Tiantian Zhou Shangwen Ling Shuxian Sun Ruoxin Yuan Ziqin Wu Mengyuan Fu Hanna He Xiaolong Li Chuhong Zhang 

机构地区：[1]State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute,Sichuan University,Chengdu 610065,Sichuan,China

出　　处：《Journal of Energy Chemistry》2024年第8期117-125,I0004,共10页能源化学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51933007,No.52373047,No.52302106);the Sichuan Youth Science and Technology Innovation Research Team Project(No.2022JDTD0012);the Program for Featured Directions of Engineering Multidisciplines of Sichuan University(No.2020SCUNG203);the Natural Science Foundation of Sichuan Province(No.2023NSFSC0418);the Program for State Key Laboratory of Polymer Materials Engineering(No.sklpme2022-3-10)。

摘　　要：The tireless pursuit of supercapacitors with high energy density entails the parallel advancement of wellsuited electrode materials and elaborately engineered architectures.Polypyrrole(PPy)emerges as an exceedingly conductive polymer and a prospective pseudocapacitive materials for supercapacitors,yet the inferior cyclic stability and unpredictable polymerization patterns severely impede its real-world applicability.Here,for the first time,an innovative seed-induced in-situ polymerization assisted 3D printing strategy is proposed to fabricate PPy-reduced graphene oxide/poly(vinylidene difluoride-cohexafluoropropylene)(PVDF-HFP)(PPy-rGO/PH)electrodes with controllable polymerization behavior and exceptional areal mass loading.The preferred active sites uniformly pre-planted on the 3D-printed graphene substrates serve as reliable seeds to induce efficient polypyrrole deposition,achieving an impressive mass loading of 185.6 mg cm^(-2)(particularly 79.2 mg cm^(-2)for polypyrrole)and a superior areal capacitance of 25.2 F cm^(-2)at 2 mA cm^(-2)for a 12-layer electrode.In agreement with theses appealing features,an unprecedented areal energy density of 1.47 mW h cm^(-2)for a symmetrical device is registered,a rarely achieved value for other PPy/rGO-based supercapacitors.This work highlights a promising route to preparing high energy density energy storage modules for real-world applications.

关 键 词：3D printing Seed-induced polymerization SUPERCAPACITOR POLYPYRROLE High energy density 

分 类 号：TP391.73[自动化与计算机技术—计算机应用技术] TQ317[自动化与计算机技术—计算机科学与技术] TM53[化学工程—高聚物工业]