High Electrochemical Performance of Sodium-Ion Gel Polymer Electrolytes Achieved Through a Sandwich Design Strategy Combining Soft Polymers with a Rigid MOF

被引：0

作者：

Huang, Hanjiao ^{[1
]}

Li, Zongyou ^{[1
]}

Gao, Yanjun ^{[1
]}

Wang, Tianqi ^{[1
]}

Chen, Zihan ^{[1
]}

Gan, Songjie ^{[1
]}

Yang, Caizhen ^{[1
]}

Yu, Qiyao ^{[1
]}

Zhang, Jian-Guo ^{[1
]}

机构：

[1] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

来源：

ENERGIES | 2025年 / 18卷 / 05期

基金：

中国国家自然科学基金;

关键词：

sodium-ion batteries; gel polymer electrolyte; solid-state batteries; sandwich membrane;

D O I：

10.3390/en18051160

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Sodium-ion batteries (SIBs) are considered the next-generation candidates for partially substituting for commercial lithium-ion batteries in future energy storage systems because of the abundant sodium/potassium reserves and these batteries' cost-effectiveness and high safety. Gel polymer electrolytes (GPEs) have become a popular research focus due to their advantages in terms of safety and performance in research on quasi-solid-state sodium-ion batteries (QSSIBs). Building on previous studies that incorporated MOF fillers into polymer-based gel electrolytes, we propose a 3D sandwich structure in which MOF materials are first pressed into thin films and then coated and protected by polymer materials. Using this approach, we achieved an ion conductivity of 1.75 x 10-4 S cm-1 at room temperature and an ion transference number of 0.69. Solid-state sodium-ion batteries using this gel film electrolyte exhibited long cycling stability at a 2 C current density, retaining 75.2% of their specific capacity after 500 cycles.

引用

页数：12