O-Tailored Microstructure-Engineered Interface toward Advanced Room Temperature All-Solid-State Na Batteries

Lin Li; Ruonan Xu; Long ZhangZiqi ZhangMeng YangDi LiuXinlin YanAijun Zhou

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O-Tailored Microstructure-Engineered Interface toward Advanced Room Temperature All-Solid-State Na Batteries

机译：O-Tailored Microstructure-Engineered Interface toward Advanced Room Temperature All-Solid-State Na Batteries

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摘要

The severe parasitic interface reaction and dendrite growth retard the practicalapplications of all-solid-state (ASS) Na batteries with sulfide solid electrolytes(SEs). Here, a novel composite SE is proposed, with a high ionic conductivity,composed of Na_3SbS_4 (NSS) and oxysulfide glass. The study reveals thatthe P_2S_(7-a)O_a and PS_(4-a)O_a units in oxysulfide play various roles: The former isdeoxidized to release free O ions, which reacts with the anode via migrating toform oxides, favoring an improved interface stability. The latter is highly stableupon cycling, thereby maintaining an ion transport network. Meanwhile, NSSacts as a dendrite predator via reacting with penetrated Na. These advantagesenable the resulting ASS Na battery with superior long-term cycling performanceat a high current density at room temperature, one of the best results sofar. This discovery sheds light on innovative advanced SE materials through anoxysulfide-based composite design.

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来源
《Advanced functional materials》 |2022年第31期|2203095.1-2203095.9|共9页
作者
Lin Li; Ruonan Xu; Long ZhangZiqi ZhangMeng YangDi LiuXinlin YanAijun Zhou;
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作者单位

Clean Nano Energy CenterState Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao, Hebei 066004, China;

Institute of Solid State PhysicsVienna University of Technology1040 Vienna, Austria;

Yangtze Delta Region Institute (Huzhou)University of Electronic Science and Technology of ChinaHuzhou 313002, China;

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原文格式 PDF
正文语种英语
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anion migration; composites; interphases and interfaces; solid-state batteries; sulfide solid electrolytes;

O-Tailored Microstructure-Engineered Interface toward Advanced Room Temperature All-Solid-State Na Batteries

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