Preparation and electrochemical characterization of magnesium gel electrolytes based on crosslinked Poly(tetrahydrofuran)

POLYMER

卷:224

Article

Tominaga, Yoichi¹  Kato, Sawako¹  Nishimura, Naomi¹ 

[1] Tokyo Univ Agr & Technol, Grad Sch Bioapplicat & Syst Engn, Koganei, Tokyo 1848588, Japan

关键词: Gel polymer electrolyte;    Magnesium battery;    Poly(tetrahydrofuran);   

DOI  :  10.1016/j.polymer.2021.123743

来源: Elsevier

【 摘 要 】

A crosslinked poly(tetrahydrofuran) (c-PTHF) was synthesized as a novel polymer matrix for gel polymer electrolyte (GPE) swelled with Mg(TFSI)2/triglyme solution to develop Mg-ion battery. Two GPE based on c-PTHF with different crosslinking structure and crosslinker ratio were obtained as free-standing membranes with excellent heat resistance. From the CV measurement, the Pt/GPE/AZ31 cell clearly showed Mg redox reaction, and the values of current densities in reduction/oxidation peaks and the Coulombic efficiency were larger than those of the triglyme electrolyte solution. This may be due to the changes in the solvation structure of Mg2+ ions by the presence of crosslinking structures in the network framework.

【 授权许可】

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