通过光聚合制备的交联聚合物离子液体/离子液体共混物作为超级电容器中的固态电解质

Crosslinked Polymer Ionic Liquid/Ionic Liquid Blends Prepared by Photopolymerization as Solid-State Electrolytes in Supercapacitors.

作者信息

Wang Po-Hsin, Wang Tzong-Liu, Lin Wen-Churng, Lin Hung-Yin, Lee Mei-Hwa, Yang Chien-Hsin

机构信息

, National University of Kaohsiung, Kaohsiung 81148, Taiwan.

Department of Environmental Engineering, Kun Shan University, Tainan 71070, Taiwan.

出版信息

Nanomaterials (Basel). 2018 Apr 7;8(4):225. doi: 10.3390/nano8040225.

DOI:10.3390/nano8040225

PMID:29642456

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5923555/

Abstract

A photopolymerization method is used to prepare a mixture of polymer ionic liquid (PIL) and ionic liquid (IL). This mixture is used as a solid-state electrolyte in carbon nanoparticle (CNP)-based symmetric supercapacitors. The solid electrolyte is a binary mixture of a PIL and its corresponding IL. The PIL matrix is a cross-linked polyelectrolyte with an imidazole salt cation coupled with two anions of Br in PIL-M-(Br) and TFSI in PIL-M-(TFSI), respectively. The corresponding ionic liquids have imidazolium salt cation coupled with two anions of Br and TFSI, respectively. This study investigates the electrochemical characteristics of PILs and their corresponding IL mixtures used as a solid electrolyte in supercapacitors. Results show that a specific capacitance, maximum power density and energy density of 87 and 58 F·g¹, 40 and 48 kW·kg¹, and 107 and 59.9 Wh·kg¹ were achieved in supercapacitors based on (PIL-M-(Br)) and (PIL-M-(TFSI)) solid electrolytes, respectively.

摘要

采用光聚合方法制备聚合物离子液体（PIL）和离子液体（IL）的混合物。该混合物用作基于碳纳米颗粒（CNP）的对称超级电容器中的固态电解质。固体电解质是PIL与其相应IL的二元混合物。PIL基质是一种交联聚电解质，在PIL-M-(Br)中咪唑盐阳离子与两个Br阴离子偶联，在PIL-M-(TFSI)中与两个TFSI阴离子偶联。相应的离子液体分别具有与两个Br和TFSI阴离子偶联的咪唑鎓盐阳离子。本研究考察了用作超级电容器中固体电解质的PIL及其相应IL混合物的电化学特性。结果表明，基于（PIL-M-(Br)）和（PIL-M-(TFSI)）固体电解质的超级电容器分别实现了87和58 F·g⁻¹、40和48 kW·kg⁻¹以及107和59.9 Wh·kg⁻¹的比电容、最大功率密度和能量密度。