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首页> 外文期刊>Advanced functional materials >Crosslinked Nanofiber-Reinforced Solid-State Electrolytes with Polysulfide Fixation Effect Towards High Safety Flexible Lithium–Sulfur Batteries
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Crosslinked Nanofiber-Reinforced Solid-State Electrolytes with Polysulfide Fixation Effect Towards High Safety Flexible Lithium–Sulfur Batteries

机译：Crosslinked Nanofiber-Reinforced Solid-State Electrolytes with Polysulfide Fixation Effect Towards High Safety Flexible Lithium–Sulfur Batteries

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摘要

Solid-state lithium–sulfur (Li–S) batteries using gel polymer electrolytes haveattracted much attention owing to their higher safety compared to liquidelectrolytes and lower interfacial resistance compared to ceramic electrolytes.However, except for their unsatisfactory lithium-ion conductivity, relativelylow mechanical strength, the unavoidable polysulfide shuttling in gel polymerelectrolytes still limits their development. This work designed a poly(ethyleneoxide)-polyacrylonitrile (PEO-PAN) copolymer membrane electrolyte, in whichPAN fibers act as both a filler and crosslinker. This structure not only providesimproved ionic conductivity, high mechanical strength, and lithium dendriteblocking ability, it also inhibits polysulfide shuttling as a result of strong polysulfideadsorption by the CNO functional groups formed during the PEOand PAN crosslinking process, which improves the safety, cycling stabilityand rate capability when used in Li–S batteries. A more than 96% capacityretention after 1000 bend cycles of the flexible battery is also achievedbecause of the high flexibility and high bonding strength of this electrolyte.

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