Thin laminar composite solid electrolyte with high ionic conductivity and mechanical strength towards advanced all-solid-state lithium–sulfur battery

Zhai, Pengfei; Peng, Na; Sun, Zeyu; Wu, Wenjia; Kou, Weijie; Cui, Guoshi; Zhao, Kang; Wang, Jingtao

doi:10.1039/d0ta07630a

Cited by 61 publications

(43 citation statements)

References 53 publications

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“…As result, the high-rate performance of ASSLBs is improved, which has low capacity fading from 0.05C to 0.2C. [156] Third, 2DMs such as 2D VS, lepidolite can provide extra ionic transport channels to enhance the ionic conductivity. Due to the high specific properties, most 2DMs can make fast lithium-ion transport on the surface.…”

Section: Solid Polymer Electrolytes (Spe)mentioning

confidence: 99%

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2D Materials for All‐Solid‐State Lithium Batteries

Zheng

Luo

et al. 2022

Advanced Materials

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.202108079. Althoughone of the most mature battery technologies, lithium-ion batteries still have many aspects that have not reached the desired requirements, such as energy density, current density, safety, environmental compatibility, and price. To solve these problems, all-solid-state lithium batteries (ASSLB) based on lithium metal anodes with high energy density and safety have been proposed and become a research hotpot in recent years. Due to the advanced electrochemical properties of 2D materials (2DM), they have been applied to mitigate some of the current problems of ASSLBs, such as high interface impedance and low electrolyte ionic conductivity. In this work, the background and fabrication method of 2DMs are reviewed initially. The improvement strategies of 2DMs are categorized based on their application in the three main components of ASSLBs: The anode, cathode, and electrolyte. Finally, to elucidate the mechanisms of 2DMs in ASSLBs, the role of in situ characterization, synchrotron X-ray techniques, and other advanced characterization are discussed.

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Section: Solid Polymer Electrolytes (Spe)mentioning

confidence: 99%

mentioning

confidence: 99%

2D Materials for All‐Solid‐State Lithium Batteries

Zheng

Luo

et al. 2022

Advanced Materials

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“…[21] Low crystallinity improves the chain motility of PEO, allowing it to rapidly transfer Li + in the interlayer channels. [24] Additionally, X-ray diffraction patterns of the composite electrolytes (Figure S6, Supporting Information) also infer that PIM-1 has lowered the crystallinity of PEO.…”

Section: Resultsmentioning

confidence: 94%

“…[15] Consequently, PEO-based solid-state Li-S batteries generally suffer from rapid capacity decay and low Coulombic efficiencies, especially when operated at temperatures approaching the melting temperature of PEO (≈60 °C). [16] Many strategies have been suggested to improve the overall performance of PEO-based electrolytes in solid-state Li-ion batteries, such as creating composite solid electrolytes, [17] optimization of lithium salts, [18][19][20] incorporation of ceramic or inorganic nanoparticles as fillers, [21,22] and the introduction of novel polymer composites, [23,24] or quasi-ionic liquids, [25] into the electrolyte. [25] Unfortunately, few strategies manage to mitigate the shuttling of polysulfides within the PEO polymer, or eliminate dendrites, limiting the effectiveness of these solid polymer electrolytes (SPEs) in solid-state Li-S batteries.…”

Section: Introductionmentioning

confidence: 99%

PIM‐1 as a Multifunctional Framework to Enable High‐Performance Solid‐State Lithium–Sulfur Batteries

Yang

Liu

et al. 2021

Adv Funct Materials

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Poly(ethylene oxide) (PEO) is a promising solid electrolyte material for solidstate lithium-sulfur (Li-S) batteries, but low intrinsic ionic conductivity, poor mechanical properties, and failure to hinder the polysulfide shuttle effect limits its application. Herein, a polymer of intrinsic microporosity (PIM) is synthesized and applied as an organic framework to comprehensively enhance the performance of PEO by forming a composite electrolyte (PEO-PIM). The unique structure of PIM-1 not only enhances the mechanical strength and hardness over the PEO electrolyte by an order of magnitude, increasing stability toward the metallic lithium anode but also increases its ionic conductivity by lowering the degree of crystallinity. Furthermore, the PIM-1 is shown to effectively trap lithium polysulfide species to mitigate against the detrimental polysulfide shuttle effect, as electrophilic 1,4-dicyanooxanthrene functional groups possess higher binding energy to polysulfides. Benefiting from these properties, the use of PEO-PIM composite electrolyte has achieved greatly improved rate performance, long-cycling stability, and excellent safety features for solid-state Li-S batteries. This methodology offers a new direction for the optimization of solid polymer electrolytes.

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“…The artificial coating layers on the surface of Cu could avoid the direct contact between the reactive Li deposits and the electrolyte. [ 83 ] Glassy lithium phosphorous oxynitride (LiPON) was used as overlayers for lithium‐free film batteries. It achieved 80% capacity retention over 10 000 cycles with the aid of overlayers.…”

Section: The Substrate Designmentioning

confidence: 99%

Challenges, Strategies, and Prospects of the Anode‐Free Lithium Metal Batteries

Shao

Tang

Zhang

et al. 2022

Adv Energy and Sustain Res

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The anode‐free lithium metal batteries (AF‐LMB), eliminating the use of host anode, can exploit the full potential of the lithium‐containing cathode system in terms of the highest retrievable gravimetric/volumetric energy densities, simplified processing of the anode coating, as well as the reduced cost of cell production and maintenance. However, the issues of interfacial contact resistance, curtailed ion pathway, as well as the dead lithium formation coherently lead to the unsatisfactory cation utilization upon repetitive cycling, which impairs the performance endurance of the practical relevance. Hitherto, a plethora of optimization strategies for the electrolyte and deposition substrate are proposed to extend the cell lifespan. Most of the methods, however, are still based on empirical attempts and lack of systematic diagnosis tools to elucidate the interplay between the structural evolution of the cathode and Li deposition behavior. Herein, the recent research process is summarized and the current development dilemma from multiple perspectives is probed, aiming to highlight the key features of the system that dedicate the cycling endurance. In addition, prospects of the operando characterizations that can be used to accelerate the mechanism elucidation of the AF‐LMB configuration are systematically commented.

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Thin laminar composite solid electrolyte with high ionic conductivity and mechanical strength towards advanced all-solid-state lithium–sulfur battery

Abstract: Development of thin solid-state electrolyte with high ionic conductivity and mechanical strength is of great importance for high-performance all-solid-state lithium−sulfur battery. However, the state-of-the-art solid polymer electrolyte suffers from poor...

Cited by 61 publications

References 53 publications

2D Materials for All‐Solid‐State Lithium Batteries

2D Materials for All‐Solid‐State Lithium Batteries

PIM‐1 as a Multifunctional Framework to Enable High‐Performance Solid‐State Lithium–Sulfur Batteries

Challenges, Strategies, and Prospects of the Anode‐Free Lithium Metal Batteries

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