Abstract
Solid polymer composite electrolytes possess the benefits of superior compatibility with electrodes and good thermal characteristics for more secure energy storage equipment.Herein,a new gel polymer electrolyte(GPE)containing NH2-MIL-53(Al),[PP13][TFSI],LiTFSI,and PVDF-HFP was prepared using a simple method of solution casting.The effects of encapsulating different ratios of ionic liquid([PP13][TFSI])into the micropores of functionalized metal-organic frameworks(NH2-MIL-53(Al))on the electrochemical properties were compared.XRD,SEM,nitrogen adsorption-desorption isotherms,and electroche-mical measurements were conducted.This GPE demonstrates a superior ionic conductivity of 8.08 × 10-4 S·cm-1 at 60 ℃ and can sustain a discharge specific capacity of 156.6 mA·h·g-1 at 0.2 C for over 100 cycles.This work might offer a potential approach to alleviate the solid-solid contact with the solid-state electrolyte and electrodes and broaden a new window for the creation of all-solid-state batteries.
基金项目
National Natural Science Foundation of China(21701083)
Postgraduate Research &Practice Innovation Program of Jiangsu Province(KYCX20_3137)
NETL
NSTL
万方数据