Li<sub>2</sub>Se: A High Ionic Conductivity Interface to Inhibit the Growth of Lithium Dendrites in Garnet Solid Electrolytes

Wu, Yang; Tang, Shijun; Yang, Xuerui; Zheng, Xuefan; Wu, Yuqi; Zheng, Chenxi; Chen, Gui-Wei; Gong, Zhengliang; Yang, Yong

doi:10.1021/acsami.2c09729

Cited by 6 publications

(5 citation statements)

References 51 publications

(73 reference statements)

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“…Furthermore, Liu et al 28 fabricated an ionic conductive Li 2 S/Li 2 Se protection layer by the typical gas‐solid method (Figure 14C). And Yang et al, 143 introduced Li 2 Se buffer layer between Li anode and Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO). Li 2 Se buffer layer constructed by different thick Se films formation on the surface of LLZTO by using vacuum thermal evaporation at 180°C (Figure 14D).…”

Section: Design and Modification Of The Asslsebsmentioning

confidence: 99%

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A review of all‐solid‐state lithium‐selenium batteries

Guo,

Zhang,

Tang

et al. 2023

Battery Energy

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Rechargeable lithium‐selenium batteries (LSeBs) are promising candidates for next‐generation energy storage systems due to their exceptional theoretical volumetric energy density (3253 mAh cm−3). However, akin to lithium‐sulfur batteries, the adoption of LSeBs has been hampered by problems such as polyselenides migration in liquid electrolytes, uncontrolled dendrite growth and safety concerns. To overcome these issues, researchers proposed to use the solid‐state electrolytes (SSEs) as a method, which could mitigate the formation of polyselenides. However, practical utilization of the all‐solid‐state Li‐Se batteries (ASSLSeBs) face significant obstacles, including sluggish redox kinetics during Se conversion (Se ↔ Li2Se), inadequate interfacial contact and formation of Li dendrites. Scientists have applied strategies to tackle these challenges. This article offers a timely review of emerging strategies. The article begins by conducting a detailed analysis of the working principles of ASSLSeBs and identifying the critical challenges that hinder practical application. Subsequently, the article presents a comprehensive summary of various strategies aimed at boosting the development of ASSLSeBs, which encompass advancements in Se cathode materials, optimization of SSEs, design of stable Li anodes, and approaches in addressing the interfacial challenge. Finally, the article offers further perspectives about promoting the application of ASSLSeBs. It highlights the need for continued research and development to overcome existing limitations. Overall, by understanding these emerging strategies, researchers could enhance the technology of LSeBs, bringing us closer to the practical realization of high‐energy storage systems.

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Section: Design and Modification Of The Asslsebsmentioning

confidence: 99%

Section: Design and Modification Of The Asslsebsmentioning

confidence: 99%

A review of all‐solid‐state lithium‐selenium batteries

Guo,

Zhang,

Tang

et al. 2023

Battery Energy

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“…40 To reduce the interfacial impedance, researchers have improved wettability through applying a layer of metallic or nonmetallic layer on the surface of LLZTO. Various deposition techniques can be employed to coat the SSE with substances such as Al, 41 Ge, 42 Cu and Zn, 43 Ag, 44 Mg, 45 Au, 46 Sn, 47 Se, 48 Si, 49 and graphite. 50 This type of interface layer can react with metallic lithium to create an alloy, consequently increasing the wettability of the two materials.…”

Section: Introductionmentioning

confidence: 99%

Economic and Effective Construction of a P/Sn Multifunctional Layer on the Li/Garnet Interface via Transformation Reactions

Zhao,

Lin,

Yang

et al. 2024

ACS Sustainable Chem. Eng.

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Garnet-based solid-state electrolytes (SSEs) have been regarded as one of the most promising ideal candidates for applications in all-solid-state lithium metal batteries (ASSLMBs) due to their high electrochemical stability, wide potential window, and superior safety performance. However, their practical utilization is currently limited by their poor interfacial compatibility and short cycling life. Here, a low-cost and effective interfacial modification method is proposed to improve the interfacial contact by introducing a thin uniform modified layer of Sn 4 P 3 on the surface of garnet-type Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 SSE. According to experimental results and theoretical calculations, it has been discovered that Li and Sn 4 P 3 undergo a transformation reaction, resulting in the production of a multifunctional interfacial layer consisting of Li 22 Sn 5 /Li 8 SnP 4 . Specifically, due to the presence of this layer, the interfacial impedance of the Li−Li symmetric cell is just approximately 1 Ω cm −2 and the symmetric cell exhibits a critical current density of 1.7 mA cm −2 at room temperature. The remarkable features of the electrolyte interface ensure that the symmetric cells are capable of stable electrochemical cycling for >1800 h at 0.5 mA cm −2 . Additionally, the ASSLMBs demonstrate favorable cycling and rate performance. This effective transformation reaction-driven interfacial modification strategy offers a beneficial means of resolving the interfacial issues of Li/garnet-state SSEs.

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“…Lithium–selenium (Li–Se) batteries have attracted a lot of scientific interest over the past decade as an alternate to the commercially successful lithium-ion batteries (LIBs) and the extensively studied Li–S batteries. − The Se cathode has features comparable or superior to S and to many conventional transition metal ion-based materials such as LiCoO 2 , LiFePO 4 , etc., which are used in LIBs. The volumetric capacity of Se (3254 mAh cm –3 ) is comparable to that of S (3467 mAh cm –3 ) and significantly greater than that of the much-used LiCoO 2 and LiFePO 4 (700 and 362 mAh cm –3 , respectively).…”

Section: Introductionmentioning

confidence: 99%

Selenium/g-C₃N₄ with a Solid Li₄Ti₅O₁₂ Blocking Layer for Selective Li⁺ Ion Diffusion in Long-Lived Li–Se Batteries

Ojha

Pal

Deepa

2023

ACS Appl. Nano Mater.

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A durable Li−Se battery is fabricated by implementing a rational and facile design strategy for the cathode. The cathode consists of a Se/graphitic carbon nitride (g-C 3 N 4 ) composite combined with a solid lithium titanate (Li 4 Ti 5 O 12 , LTO) layer applied as a solid coating over the separator. The solid LTO layer has pores large enough to allow Li + ions to diffuse through to the anode during charging but small enough to effectively block the polyselenides formed during the discharging cycle and confine them to the cathode, thus inhibiting capacity fade and improving the operational lifespan. The micrometer-thick LTO barrier layer affords selective diffusion of Li + ions, with an average Li + diffusion coefficient of 6 × 10 −11 cm 2 s −1 , enabling reasonably fast ion transport and kinetics. Simultaneously, g-C 3 N 4 , which is rich with active heteroatom (N) sites, also affords a very high Li + ion adsorption, leading to an improved capacity compared to pristine Se. The Se/g-C 3 N 4 /LTO@separator-Li + /Li cell delivers a superior capacity (750 versus 538 mAh g −1 at 0.1 C-rate), rate capability (39% versus 22% capacity retention ongoing from 0.1 to 2 C-rate), and cycle life (498 versus 283 mAh g −1 reversible capacity after 400 cycles) compared to the equivalent cell devoid of the LTO layer. Extended long-term cycling metrics showed a 310 mAh g −1 reversible capacity at 2 C, with 78% retention after 1600 cycles, and reiterated the potential it has for scale-up and even commercial applications.

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Li₂Se: A High Ionic Conductivity Interface to Inhibit the Growth of Lithium Dendrites in Garnet Solid Electrolytes

Cited by 6 publications

References 51 publications

A review of all‐solid‐state lithium‐selenium batteries

A review of all‐solid‐state lithium‐selenium batteries

Economic and Effective Construction of a P/Sn Multifunctional Layer on the Li/Garnet Interface via Transformation Reactions

Selenium/g-C₃N₄ with a Solid Li₄Ti₅O₁₂ Blocking Layer for Selective Li⁺ Ion Diffusion in Long-Lived Li–Se Batteries

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Li2Se: A High Ionic Conductivity Interface to Inhibit the Growth of Lithium Dendrites in Garnet Solid Electrolytes

Cited by 6 publications

References 51 publications

A review of all‐solid‐state lithium‐selenium batteries

A review of all‐solid‐state lithium‐selenium batteries

Economic and Effective Construction of a P/Sn Multifunctional Layer on the Li/Garnet Interface via Transformation Reactions

Selenium/g-C3N4 with a Solid Li4Ti5O12 Blocking Layer for Selective Li+ Ion Diffusion in Long-Lived Li–Se Batteries

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Li₂Se: A High Ionic Conductivity Interface to Inhibit the Growth of Lithium Dendrites in Garnet Solid Electrolytes

Selenium/g-C₃N₄ with a Solid Li₄Ti₅O₁₂ Blocking Layer for Selective Li⁺ Ion Diffusion in Long-Lived Li–Se Batteries