Title:
HIGH-PERFORMANCE ALL-SOLID-STATE SUPERCAPACITOR BASED ON GEL POLYMER ELECTROLYTE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/183606
Kind Code:
A1
Abstract:
The present invention belongs to the field of energy storage, and relates to a gel polymer electrolyte and a preparation method therefor, and a high-performance all-solid-state supercapacitor based on the gel polymer electrolyte. The supercapacitor comprises electrodes and a gel polymer electrolyte between the electrodes. The flame-retardant gel polymer electrolyte comprises a gel polymer and lithium bis(trifluoromethanesulfonyl) imide (LiTFSI). The lithium bis (trifluoromethanesulfonyl) imide (LiTFSI) exists in the gel polymer in the form of ions. The flame retardant gel polymer electrolyte as shown in formula (I) is prepared by grafting an active P-H bond of a flame retardant (DOPO) onto a polymer chain. The gel electrolyte has good ionic conductivity and good flame retardant capability of 4 mS cm-1 at 20°C. The mechanical strength of the gel electrolyte is adjusted in the range of ~28 KPa maximum stress and ~305% maximum strain. The gel-based SC has good low temperature tolerance and can work normally in a temperature range of -20°C to 60°C. The multiple advantages of the gel electrolyte expand its use in ion conductors and energy storage devices, solving the drawbacks of conventional liquid electrolytes due to volatile, flammable and easy leakage.
Inventors:
LIU LIBIN (CN)
WANG JIJUN (CN)
BAN QING (CN)
GAI LIGANG (CN)
LI XUELIN (CN)
JIANG HAIHUI (CN)
WANG JIJUN (CN)
BAN QING (CN)
GAI LIGANG (CN)
LI XUELIN (CN)
JIANG HAIHUI (CN)
Application Number:
PCT/CN2021/096478
Publication Date:
September 09, 2022
Filing Date:
May 27, 2021
Export Citation:
Assignee:
UNIV QILU TECHNOLOGY (CN)
International Classes:
H01G11/56; H01G11/84; H01G11/86
Foreign References:
| CN109671977A | 2019-04-23 | |||
| CN109509911A | 2019-03-22 | |||
| CN111224156A | 2020-06-02 | |||
| US20200287240A1 | 2020-09-10 |
Other References:
WANG JIJUN, XUELIN LI, JIANBO YANG, WEIGANG SUN, QING BAN, LIGANG GAI, YINGYING GONG, ZHEN XU, LIBIN LIU : "Flame-Retardant, Highly Conductive, and Low-Temperature-Resistant Organic Gel Electrolyte for High-Performance All-Solid Supercapacitors", CHEMSUSCHEM, vol. 14, no. 9, 10 March 2021 (2021-03-10), pages 2056 - 2066, XP055963271, DOI: 10.1002/cssc.202100141
ZENG LI, JIA LU, LIU XINGANG, ZHANG CHUHONG: "A Novel Silicon/Phosphorus Co-Flame Retardant Polymer Electrolyte for High-Safety All-Solid-State Lithium Ion Batteries", POLYMERS, vol. 12, no. 12, pages 2937, XP055963267, DOI: 10.3390/polym12122937
ZENG LI, JIA LU, LIU XINGANG, ZHANG CHUHONG: "A Novel Silicon/Phosphorus Co-Flame Retardant Polymer Electrolyte for High-Safety All-Solid-State Lithium Ion Batteries", POLYMERS, vol. 12, no. 12, pages 2937, XP055963267, DOI: 10.3390/polym12122937
Attorney, Agent or Firm:
ZHUSEN INTELLECTUAL PROPERTY AGENCY OFFICE (CN)
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