Novel electriferous charge-mosaic S(TMC@Lys-Li)separator towards efficient Li^(+)fast-transfer for high-energy density and long-duration lithium-sulfur batteries  

作　　者：Lei Ding Dandan Li Sihang Zhang Zhaoyang Wang Pengfang Zhang Fanghui Du Shuyue Zhao Daoxin Zhang Feng Yang Shuo Zhang 

机构地区：[1]Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology,School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252000,Shandong,China [2]School of Food Science and Engineering,Hainan University,Haikou 570228,Hainan,China [3]State Key Laboratory of Polymer Materials Engineering,College of Polymer Science and Engineering,Sichuan University,Chengdu 610065,Sichuan,China [4]College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China

出　　处：《Journal of Energy Chemistry》2025年第3期197-207,共11页能源化学(英文版)

基　　金：supported by the Natural Science Foundation of Shandong Province(ZR2022QB050);the Liaocheng University Doctoral Initial Fund(318052137)。

摘　　要：Lithium-sulfur(Li-S)batteries with attractive capacity give remarkable potential for prospective high-capacity application scenarios but suffer a fatal flaw of short cyclability before large-scale commercialization especially owing to polysulfide(Li_(2)S_n)transmembrane shuttling.To efficiently restrain chronic Li_(2)S_n shuttle and expedite Li^(+)transfer,herein,a novel electriferous charge-mosaic S(TMC@Lys-Li)separator preparation approach is recommended.Interfacial polymerizations of lithiated lysine and trimesoyl chloride establish an electriferous charge-mosaic polyamide functional layer.Substituted Li within the charge-mosaic layer offers transition or replacement sites for smoothing Li^(+)migrations,which constructs efficient Li^(+)fast-transfer private channels and accelerates the Li^(+)transfer rate to 9.4 times.Negatively charged polyamide skeleton synchronously heightens Li_(2)S_n rejections by combining Donnan and steric effects.S(TMC@Lys-Li)replenishes Li for homogenizing Li nucleation and growth,endowing stable plating/stripping behaviors over 250 cycles for Li-Cu batteries.Assembled Li-S cells thus exhibit excellent specific capacity and cyclability at multiple application scenarios such as long periods,high areal capacity,and fast charge,holding 78.1%retention after 500 cycles at 1 C.The superior thermal stability and self-discharge of S(TMC@Lys-Li)dramatically strengthen battery thermal runaway resistance even at155℃,which ensures security for Li-S battery high-power and high-temperature operations.Above alluring features enable charge-mosaic separators to be potentially adopted in practical Li-S batteries demanding strict security,high-capacity density,and fast charge technology.

关 键 词：Lithium-sulfur battery separator Polysulfide barrier Li*fast-transfer private channels MULTIFUNCTIONAL 

分 类 号：TM912[电气工程—电力电子与电力传动]