Insight into the activation energy for the interfacial stability evaluation in all-solid-state Li-ion batteries

Song, Dongxing; Ma, Weigang; Zhang, Xing

doi:10.1016/j.jpowsour.2021.230211

Cited by 8 publications

(3 citation statements)

References 59 publications

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“…In situ transmission electron microscopy (TEM) analysis conducted for the Li-LGPS interface demonstrated the formation of crystalline Li 2 S . In addition, the (electro)chemical stability of solid electrolyte and reaction products have been predicted by first-principles calculations. ,− Numerous investigations have implied that the sulfide electrolytes have a narrow electrochemical window and the Li-P-S system will be reduced into Li 2 S and Li 3 P by Li metal, matching well with the reported experimental results. However, the existing studies mainly focus on determination of exact reaction products.…”

supporting

confidence: 73%

Nanostructure of the Interphase Layer between a Single Li Dendrite and Sulfide Electrolyte in All-Solid-State Li Batteries

et al. 2022

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A stable electrode–electrolyte interface is the key for the application of high-energy all-solid-state lithium metal batteries, but the nanoscale behavior of the interface remains mysterious. Herein, utilizing cryogenic transmission electron microscopy, we investigate the nanostructure of the interphase layer between a single Li dendrite and sulfide electrolyte (SE) at various temperatures. It is found that a single-crystal Li2S layer with ∼12 nm thickness is formed at 25 °C with good passivation on the interface, while at 60 °C, the interphase is composed of polycrystalline Li2S accompanied by a disorder–order phase transition. The increased grain boundaries and enlarged thickness of interphase at elevated temperature lead to ultra-high interface resistance. The temporal evolution of the atom-scale structure was further elucidated by reactive dynamics simulations to assist in understanding the kinetics. Our study provides new insight on the nanoscale interphase of the Li-SE interface and will offer valuable guidance for the future design and engineering of interfaces.

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confidence: 73%

Nanostructure of the Interphase Layer between a Single Li Dendrite and Sulfide Electrolyte in All-Solid-State Li Batteries

et al. 2022

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“…In addition, the activation energies of Li 5.55 PS 4.45 N 0.05 Cl 1.5 is .2240 eV, which is significantly lower than the .2498 eV of Li 5.5 PS 4.5 Cl 1.5 , as seen in Figure 1E. The reduced activation energy, which can represent the continuity of a reaction, means that the superior interface stability of Li 5.55 PS 4.45 N 0.05 Cl 1.5 can be expected 22 …”

Section: Resultsmentioning

confidence: 81%

“…The reduced activation energy, which can represent the continuity of a reaction, means that the superior interface stability of Li 5.55 PS 4.45 N 0.05 Cl 1.5 can be expected. 22 To assess the stability of solid electrolytes in the dry room with a dew point of −50 • C, which has limited moisture in the air, the obtained solid electrolytes were fully exposed in a drying room for 5 h. As shown in Figure 2A, the Li 5.55 PS 4.45 N 0.05 Cl 1.5 solid electrolyte exhibits an impressive 71% retention in ionic conductivity after a 5-h exposure to air. In contrast, the ionic conductivity retention rate of Li 5.5 PS 4.5 Cl 1.5 is only 40.2% (Figure 2A).…”

Section: Resultsmentioning

confidence: 99%

Nitrogen doped sulfide solid electrolytes with enhanced air stability and lithium metal compatibility

Luan,

Ren,

Wang

et al. 2024

Int J Applied Ceramic Tech

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Compared with oxide, halide, and polymer‐based solid electrolytes, Li‐ion conducting sulfide solid electrolytes exhibit remarkable ionic conductivity, electronic conductivity, and exceptional thermal and mechanical properties. Despite these advantages, the susceptibility of sulfide electrolytes to air and the formation of lithium dendrites on the anode hinder their large‐scale commercial application. In this study, we propose a doping strategy involving the nitrogen (N) element in sulfide electrolyte Li5.5PS4.5Cl1.5 (LPSCl) with inherently high ionic conductivity. We have successfully synthesized Li5.5+xPS4.5−xNxCl1.5(x = .025, .05, .07, .10) solid electrolytes by enhancing their air stability through doping. The modified electrolyte material demonstrates stable cycling performance exhibiting superior air stability compared to Li5.5PS4.5Cl1.5. The results indicate that the doped sulfide solid electrolyte effectively suppresses the growth of lithium dendrites, thereby enhancing the compatibility between the lithium metal anode and sulfide solid electrolyte.

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Gel polymer electrolyte based on polymer matrix of hydroxyethyl cellulose composite lignocellulose

Liu,

Gan,

Huang

et al. 2023

Bull Mater Sci

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Insight into the activation energy for the interfacial stability evaluation in all-solid-state Li-ion batteries

Cited by 8 publications

References 59 publications

Nanostructure of the Interphase Layer between a Single Li Dendrite and Sulfide Electrolyte in All-Solid-State Li Batteries

Nanostructure of the Interphase Layer between a Single Li Dendrite and Sulfide Electrolyte in All-Solid-State Li Batteries

Nitrogen doped sulfide solid electrolytes with enhanced air stability and lithium metal compatibility

Gel polymer electrolyte based on polymer matrix of hydroxyethyl cellulose composite lignocellulose

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