Constructing a stable interface between the sulfide electrolyte and the Li metal anode<i>via</i>a Li<sup>+</sup>-conductive gel polymer interlayer

Wang, Yahui; Yue, Junpei; Wang, Wenpeng; Chen, Wanping; Zhang, Ying; Yang, Yachao; Zhang, Juan; Yin, Ya‐Xia; Zhang, Xing; Xin, Sen; Guo, Yu‐Guo

doi:10.1039/d1qm00395j

Cited by 15 publications

(5 citation statements)

References 46 publications

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“…141 Additionally, Guo et al used the in situ polymerization method to form a protective film between the Li/SSEs, which can effectively prevent side reactions at the interface. 154 The utilization of nanocomposite layers composed of organic and inorganic Li salts can also avoid the reduction of SSEs by Li metal. By electrochemically reducing liquid electrolytes, the interphase was formed in situ on the Li anode, enabling its excellent (electro)chemical stability against Li reduction and limited interfacial resistance.…”

Section: Strategy To Improve Li/sse Interface Stabilitymentioning

confidence: 99%

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Insights into interfacial physiochemistry in sulfide solid-state batteries: a review

Zheng¹,

Zhu²,

Wang³

et al. 2023

Mater. Chem. Front.

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Section: Strategy To Improve Li/sse Interface Stabilitymentioning

confidence: 99%

“…141 Additionally, Guo et al used the in situ polymerization method to form a protective film between the Li/SSEs, which can effectively prevent side reactions at the interface. 154…”

Section: Metal/sse Interfacementioning

confidence: 99%

Insights into interfacial physiochemistry in sulfide solid-state batteries: a review

Zheng¹,

Zhu²,

Wang³

et al. 2023

Mater. Chem. Front.

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“…[14,15] This causes cracks between the electrode and electrolyte during charging and discharging. [16][17][18][19][20] Unlike liquid electrolytes, solid electrolytes cannot penetrate the interparticle spaces, leading to an irreversible loss of particle-toparticle contact at the interfaces. [5,13] It remains challenging to maintain a sufficient electrode-electrolyte contact area with metal and alloy anodes by suppressing crack formation.…”

Section: Introductionmentioning

confidence: 99%

Crack Suppression by Downsizing Sulfide‐Electrolyte Particles for High‐Current‐Density Operation of Metal/Alloy Anodes

Kim,

Watanabe,

Matsui

et al. 2023

Batteries & Supercaps

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Stable physical contact between lithium metal/alloy anodes and the solid electrolyte layer is crucial for the durable operation of allsolid‐state batteries. Herein, we have attempted to control the mechanical property of a Li10.35Ge1.35P1.65S12 (LGPS) solid electrolyte layer by the grain size and examined the mechanical strength against stresses originating from volumetric changes of an In‐Li anode layer. The submicron‐sized LGPS electrolyte (d50: 0.51 µm) with a uniform particle size distribution has successfully fabricated by a wet‐milling process. The crystallinity of LGPS hardly changes on pulverization. In‐Li symmetric cells with the wet‐milled LGPS exhibits better cycle stability than those constructed with micro‐sized LGPS (d50: 1.32 µm) that is not well controlled by particle size, owing to a greater suppression of overvoltage generation and growth. Microstructural analyses have revealed that the small and uniform LGPS particles are less prone to physical degradation (cracking) due to volume changes of In‐Li. Downsizing of solid electrolytes is a good strategy for developing physically stable electrode/solid electrolyte interfaces even at high current density operation.

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“…[30] Guo et al reported that constructed an elastic gel polymer sandwich using a liquid ether electrolyte to stabilize the Li metal and Li 10 GeP 2 S 12 electrolyte. [31] Huang et al reported a flexible PEO-Li 10 Si 0.3 PS 6.7 Cl 1.8 -LiTFSI composite electrolyte that effectively inhibited the generation of lithium dendrites and stabilized the Li/SEs interface. [32] The modified layer enhanced the stability of SEs/Li; however, a large interface resistance and limited resistance to oxidation persisted.…”

Section: Introductionmentioning

confidence: 99%

PVDF‐HFP via Localized Iodization as Interface Layer for All‐Solid–State Lithium Batteries with Li₆PS₅Cl Films

Liu,

Zhang,

et al. 2023

Small

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All‐solid lithium (Li) metal batteries (ASSLBs) with sulfide‐based solid electrolyte (SEs) films exhibit excellent electrochemical performance, rendering them capable of satisfying the growing demand for energy storage systems. However, challenges persist in the application of SEs film owing to their reactivity with Li metal and uncontrolled formation of lithium dendrites. In this study, iodine‐doped poly(vinylidenefluoride‐hexafluoropropylene) (PVDF‐HFP) as an interlayer (PHI) to establish a stable interphase between Li metal and Li6PS5Cl (LPSCl) films is investigated. The release of I ions and PVDF‐HFP produces LiI and LiF, effectively suppressing lithium dendrite growth. Density functional theory calculations show that the synthesized interlayer layer exhibits high interfacial energy. Results show that the PHI@Li/LPSCl film/PHI@Li symmetrical cells can cycle for more than 650 h at 0.1 mA cm−2. The PHI@Li/LPSCl film/NCM622 cell exhibits a distinct enhancement in capacity retention of ≈26% when using LiNi0.6Mn0.2Co0.2O2 (NCM622) as the cathode, compared to pristine Li metal as the anode. This study presents a feasible method for producing next‐generation dendrite‐free SEs films, promoting their practical use in ASSLBs.

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Constructing a stable interface between the sulfide electrolyte and the Li metal anodeviaa Li⁺-conductive gel polymer interlayer

Abstract: Due to high ionic conductivity, favorable mechanical plasticity, and non-flammable properties, inorganic sulfide solid electrolytes bring opportunities to the practical realization of rechargeable Li-metal batteries with high energy, yet their...

Cited by 15 publications

References 46 publications

Insights into interfacial physiochemistry in sulfide solid-state batteries: a review

Insights into interfacial physiochemistry in sulfide solid-state batteries: a review

Crack Suppression by Downsizing Sulfide‐Electrolyte Particles for High‐Current‐Density Operation of Metal/Alloy Anodes

PVDF‐HFP via Localized Iodization as Interface Layer for All‐Solid–State Lithium Batteries with Li₆PS₅Cl Films

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Constructing a stable interface between the sulfide electrolyte and the Li metal anodeviaa Li+-conductive gel polymer interlayer

Abstract: Due to high ionic conductivity, favorable mechanical plasticity, and non-flammable properties, inorganic sulfide solid electrolytes bring opportunities to the practical realization of rechargeable Li-metal batteries with high energy, yet their...

Cited by 15 publications

References 46 publications

Insights into interfacial physiochemistry in sulfide solid-state batteries: a review

Insights into interfacial physiochemistry in sulfide solid-state batteries: a review

Crack Suppression by Downsizing Sulfide‐Electrolyte Particles for High‐Current‐Density Operation of Metal/Alloy Anodes

PVDF‐HFP via Localized Iodization as Interface Layer for All‐Solid–State Lithium Batteries with Li6PS5Cl Films

Contact Info

Product

Resources

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Constructing a stable interface between the sulfide electrolyte and the Li metal anodeviaa Li⁺-conductive gel polymer interlayer

PVDF‐HFP via Localized Iodization as Interface Layer for All‐Solid–State Lithium Batteries with Li₆PS₅Cl Films