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Recent progress on confinement of polysulfides through physical andchemical methods 被引量:8

Recent progress on confinement of polysulfides through physical and chemical methods
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摘要 With high theoretical energy density and the natural abundance of S, lithium-sulfur (Li-S) batteries areconsidered to be the promising next generation high-energy rechargeable energy storage devices. How-ever, issues including electronical insulation of S, the lithium polysulfides (LiPSs) dissolution and the shortcycle lifespan have prevented Li-S batteries from being practical applied. Feasible settlements of confiningLiPSs to reduce the loss of active substances and improve the cycle stability include wrapping sulfur withcompact layers, designing matrix with porous or hollow structures, adding adsorbents owning stronginteraction with sulfur and inserting polysulfide barriers between cathodes and separators. This reviewcategorizes them into physical and chemical confinements according to the influencing mechanism. Withfurther discussion of their merits and flaws, synergy of the physical and chemical confinement is believedto be the feasible avenue that can guide Li-S batteries to the practical application. With high theoretical energy density and the natural abundance of S, lithium-sulfur (Li-S) batteries areconsidered to be the promising next generation high-energy rechargeable energy storage devices. How-ever, issues including electronical insulation of S, the lithium polysulfides (LiPSs) dissolution and the shortcycle lifespan have prevented Li-S batteries from being practical applied. Feasible settlements of confiningLiPSs to reduce the loss of active substances and improve the cycle stability include wrapping sulfur withcompact layers, designing matrix with porous or hollow structures, adding adsorbents owning stronginteraction with sulfur and inserting polysulfide barriers between cathodes and separators. This reviewcategorizes them into physical and chemical confinements according to the influencing mechanism. Withfurther discussion of their merits and flaws, synergy of the physical and chemical confinement is believedto be the feasible avenue that can guide Li-S batteries to the practical application.
出处 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2018年第6期1555-1565,共11页 能源化学(英文版)
基金 supported by Basic Science Center Project of National Natural Science Foundation of China under grant No.51788104 the National Natural Science Foundation of China (grant nos.51772301 and 21773264) the National Key R&D Program of China (grant no.2016YFA0202500) the “Strategic Priority Research Program” of the Chinese Academy of Sciences (grant no.XDA09010300)
关键词 Lithium-sulfur batteries Confinement of potysulfides Physical structure design Chemical bonding Shuttle effect Lithium-sulfur batteries Confinement of potysulfides Physical structure design Chemical bonding Shuttle effect
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