A Protic Ionic Liquid Promoted Gel Polymer Electrolyte for Solid-State Electrochemical Energy Storage

被引：1
作者：
Liu, Jiaxing [1 ]
Wang, Zan [1 ]
Yang, Zhihao [1 ]
Liu, Meiling [1 ]
Liu, Hongtao [1 ]
机构：
[1] Cent South Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Chem Power Sources, Changsha 410083, Peoples R China
来源：
MATERIALS | 2024年 / 17卷 / 23期
基金：
中国国家自然科学基金;
关键词：
solid-state capacitor; protic ionic liquid; gel polymer electrolyte; electrochemical energy storage; DOUBLE-LAYER CAPACITORS; THERMAL-STABILITY; TEMPERATURE; STRATEGY;
D O I：
10.3390/ma17235948
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study presents the synthesis of a transparent, flexible gel polymer electrolyte (GPE) based on the protic ionic liquid BMImHSO(4) and on polyvinyl alcohol (PVA) through solution casting and electrochemical evaluation in a 2.5 V symmetrical C/C electrical double-layer solid-state capacitor (EDLC). The freestanding GPE film exhibits high thermal stability (>300 degrees C), wide electrochemical windows (>2.7 V), and good ionic conductivity (2.43 x 10(-2) S cm(-1) at 20 degrees C). EDLC, using this novel GPE film, shows high specific capacitance (81 F g(-1)) as well as good retention above 90% of the initial capacitance after 4500 cycles. The engineered protic ionic liquid GPE is, hopefully, applicable to high-performance solid-state electrochemical energy storage.
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页数：10
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