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

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外文摘要：The tireless pursuit of supercapacitors with high energy density entails the parallel advancement of well-suited 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-co-hexafluoropropylene)(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 appeal-ing features,an unprecedented areal energy density of 1.47 mW h cm-2 for a symmetrical device is reg-istered,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.

外文关键词：

3D printingSeed-induced polymerizationSupercapacitorPolypyrroleHigh energy density

作者：

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

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作者单位：

State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute,Sichuan University,Chengdu 610065,Sichuan,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaSichuan Youth Science and Technology Innovation Research Team ProjectProgram for Featured Directions of Engineering Multidisciplines of Sichuan UniversityNatural Science Foundation of Sichuan ProvinceProgram for State Key Laboratory of Polymer Materials Engineering

项目编号：

5193300752373047523021062022JDTD00122020SCUNG2032023NSFSC0418sklpme2022-3-10

出版年：

2024

DOI：

10.1016/j.jechem.2024.03.025

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)：2024.95(8)