Long-Life Sulfide All-Solid-State Battery Enabled by Substrate-Modulated Dry-Process Binder

Yongxing Li; Yujing Wu; Tenghuan MaZhixuan WangQifa GaoJieru XuLiquan ChenHong LiFan Wu

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Long-Life Sulfide All-Solid-State Battery Enabled by Substrate-Modulated Dry-Process Binder

机译：Long-Life Sulfide All-Solid-State Battery Enabled by Substrate-Modulated Dry-Process Binder

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Sulfide all-solid-state batteries (ASSBs) have been widely acknowledged asnext-generation energy-storage devices due to their improved safety performanceand potentially high energy density. Among the various fabricationmethods of sulfide ASSBs, solvent-free dry-film processes have uniqueadvantages including reduced costs, suppressed film delamination, thickelectrodes, and high compatibility with sulfide solid electrolytes (SEs). However,the currently dominating binder for dry-film process polytetrafluoroethylenesuffers from poor voltage stability and low viscosity, which leadsto low Coulombic efficiency and poor cycling stability of sulfide ASSBs.Herein, a specially-designed treatment is developed to obtain a new type ofdry binder, styrene-butadiene rubber (SBR), exploiting paraxylene and a NaClsubstrate to dissolve and re-precipitate SBR for controlling its stacking state,micro-structure/morphology, density, and dispersion performance. TheSE membrane prepared using this processed SBR exhibits ultra-high ionicconductivity (2.34 mS cm~(-1)), contributing to excellent cycle stability of the correspondingsulfide ASSB (>84% capacity retention after 600 cycles at 0.3C).

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来源
《Advanced energy materials》 |2022年第37期|2201732.1-2201732.12|共12页
作者
Yongxing Li; Yujing Wu; Tenghuan MaZhixuan WangQifa GaoJieru XuLiquan ChenHong LiFan Wu;
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作者单位

Tianmu Lake Institute of Advanced Energy Storage TechnologiesLiyang, Jiangsu 213300, P. R. China Nano Science and Technology InstituteUniversity of Science and Technology of ChinaSuzhou 215123, P. R. China;

Tianmu Lake Institute of Advanced Energy Storage TechnologiesLiyang, Jiangsu 213300, P. R. China Yangtze River Delta Physics Research CenterLiyang, Jiangsu 213300, P. R. China Key Laboratory for Renewable EnergyBeijing Key Laboratory for New Energy Materi;

Tianmu Lake Institute of Advanced Energy Storage TechnologiesLiyang, Jiangsu 213300, P. R. China Key Laboratory for Renewable EnergyBeijing Key Laboratory for New Energy Materials and DevicesBeijing National Laboratory for Condensed Matter PhysicsInstitutTianmu Lake Institute of Advanced Energy Storage TechnologiesLiyang, Jiangsu 213300, P. R. China Nano Science and Technology InstituteUniversity of Science and Technology of ChinaSuzhou 215123, P. R. China Yangtze River Delta Physics Research CenterLiyang;

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dry process; novel binders; solvent-free; sulfide all-solid-state batteries; sulfide solid electrolytes; thin membranes;

Long-Life Sulfide All-Solid-State Battery Enabled by Substrate-Modulated Dry-Process Binder

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