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Gel Polymer Electrolyte with Anion‐Trapping Boron Moieties via One‐Step Synthesis for Symmetrical Supercapacitors
Author(s) -
Ma Longli,
Jin Mengyuan,
Yan Chaojing,
Guo Hao,
Ma Xiaohua
Publication year - 2020
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201900807
Subject(s) - materials science , electrolyte , supercapacitor , ionic conductivity , polymer , thermal stability , graphene , lithium (medication) , capacitance , boron , monomer , ionic liquid , chemical engineering , electrode , electrochemistry , oxide , polymer chemistry , nanotechnology , composite material , organic chemistry , chemistry , catalysis , medicine , endocrinology , engineering , metallurgy
A novel gel polymer electrolyte (GPE) which is based on new synthesized boron‐containing monomer, benzyl methacrylate, 1 m LiClO 4 / N , N ‐dimethylformamidel liquid electrolyte solution is prepared through a one‐step synthesis method. The boron‐containing GPE (B‐GPE) not only displays excellent mechanical behavior, favorable thermal stability, but also exhibits an outstanding ionic conductivity of 2.33 mS cm −1 at room temperature owing to the presence of anion‐trapping boron sites. The lithium ion transference in this gel polymer film at ambient temperature is 0.60. Furthermore, the symmetrical supercapacitor which is fabricated with B‐GPE as electrolyte and reduced graphene oxide as electrode demonstrates a broad potential window of 2.3 V. The specific capacitance of symmetrical B‐GPE supercapacitors retains 90% after 3000 charge–discharge cycles at current density of 1 A g −1 .