Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies

Zhu, Qian-Cheng; Yuan, Chun; Mao, Deyu

doi:10.3390/nano12203612

Cited by 17 publications

(9 citation statements)

References 89 publications

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“…Moreover, the shuttle of lithium polysulfides could be avoided when ISEs [154] are used, and sulfide-based SEs are the most promising ISEs for LiÀ S batteries due to their high ionic conductivity and compatibility with sulfur. However, they are not stable against metallic Li.…”

Section: Pouch-type Li-s and Lià O 2 Solid-state Lmbsmentioning

confidence: 99%

Progress and Perspectives on the Development of Pouch‐Type Lithium Metal Batteries

Jie,

Tang,

et al. 2023

Angew Chem Int Ed

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Lithium (Li) metal batteries (LMBs) are the “holy grail” in the energy storage field due to their high energy density (theoretically >500 Wh kg‐1). Recently, tremendous efforts have been made to promote the research & development (R&D) of pouch‐type LMBs toward practical application. This article aims to provide a comprehensive and in‐depth review of recent progress on pouch‐type LMBs from full cell aspect, and to offer insights to guide its future development. It will review pouch‐type LMBs using both liquid and solid‐state electrolytes, and cover topics related to both Li and cathode (including LiNixCoyMn1‐x‐yO2, S and O2) as both electrodes impact the battery performance. The key performance criteria of pouch‐type LMBs and their relationship in between are introduced first, then the major challenges facing the development of pouch‐type LMBs are discussed in detail, especially those severely aggravated in pouch cells compared with coin cells. Subsequently, the recent progress on mechanistic understandings of the degradation of pouch‐type LMBs is summarized, followed with the practical strategies that have been utilized to address these issues and to improve the key performance criteria of pouch‐type LMBs. In the end, it provides perspectives on advancing the R&Ds of pouch‐type LMBs towards their application in practice.

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Section: Pouch-type Li-s and Lià O 2 Solid-state Lmbsmentioning

confidence: 99%

Progress and Perspectives on the Development of Pouch‐Type Lithium Metal Batteries

Jie,

Tang,

et al. 2023

Angew Chem Int Ed

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“…The long-chain polysulfides at the anode are then semi-permanently reduced into insoluble Li 2 S. The consequences are (a) reduced active material, which decreases capacity; (b) decreased Li-ion diffusion due to a build-up of non-reactive LiPSs; (c) large volume expansion that may break the enclosed LSB; and (d) fast self-discharging that makes commercialization difficult. While using solid-state electrolytes can effectively prevent the shuttle effect, LSBs with even the latest solid-state electrolytes are not commercially viable due to poor ionic conductivity and slow redox kinetics that limit energy storage and power density [ 31 , 32 , 33 ]. Thus, there have been great efforts to mitigate the shuttle effect using novel NF separators in liquid electrolytes.…”

Section: Lithium Polysulfide Shuttle Effectmentioning

confidence: 99%

Recent Development in Novel Lithium-Sulfur Nanofiber Separators: A Review of the Latest Fabrication and Performance Optimizations

2023

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Lithium-Sulfur batteries (LSBs) are one of the most promising next-generation batteries to replace Li-ion batteries that power everything from small portable devices to large electric vehicles. LSBs boast a nearly five times higher theoretical capacity than Li-ion batteries due to sulfur’s high theoretical capacity, and LSBs use abundant sulfur instead of rare metals as their cathodes. In order to make LSBs commercially viable, an LSB’s separator must permit fast Li-ion diffusion while suppressing the migration of soluble lithium polysulfides (LiPSs). Polyolefin separators (commonly used in Li-ion batteries) fail to block LiPSs, have low thermal stability, poor mechanical strength, and weak electrolyte affinity. Novel nanofiber (NF) separators address the aforementioned shortcomings of polyolefin separators with intrinsically superior properties. Moreover, NF separators can easily be produced in large volumes, fine-tuned via facile electrospinning techniques, and modified with various additives. This review discusses the design principles and performance of LSBs with exemplary NF separators. The benefits of using various polymers and the effects of different polymer modifications are analyzed. We also discuss the conversion of polymer NFs into carbon NFs (CNFs) and their effects on rate capability and thermal stability. Finally, common and promising modifiers for NF separators, including carbon, metal oxide, and metal-organic framework (MOF), are examined. We highlight the underlying properties of the composite NF separators that enhance the capacity, cyclability, and resilience of LSBs.

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“…Recently, it has been revealed that the solvation of polysulfides in the electrolyte is associated with the reaction pathway of sulfur. Electrolytes are hereby classified into three groups depending on the solubility of polysulfides (including sparingly, moderately, and highly solvating systems) [ 49 ] while they can be alternatively categorized into liquid, [ 50 ] gel‐polymer, [ 51 ] and solid‐state [ 52 ] types by physical states.…”

Section: Challenges Of Lithium–sulfur Batteriesmentioning

confidence: 99%

Solutions to the Challenges of Lithium–Sulfur Batteries by Carbon Nanotubes

Shearer

et al. 2023

Advanced Sustainable Systems

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The continuously increasing demands for energy storage devices for portable electronics and electric vehicles have aroused massive research interest in developing lithium–sulfur batteries (LSBs) with high energy density and long‐term stability. Carbon nanotubes (CNTs), possessing numerous superior properties, are integrated into various components of LSBs for performance improvement. Nevertheless, a systematic and insightful issue‐based study of their inherent roles in addressing the practical challenges of LSBs is lacking. There is a growing consensus that CNTs do not directly contribute to the specific capacity (i.e., being involved in the redox reactions with electron loss/gain), while their auxiliary roles, such as providing a conductive and mechanically reinforced framework for active materials, are of prime significance in regulating the electrochemical reaction, charge transport, and mass transfer in the system. In this paper, after briefly introducing the working principles of LSBs and the promising applicability of CNTs, current challenges in various components of LSBs are discussed with the corresponding CNT‐based solutions, followed by an evaluation of the potential for commercializing CNT‐involved LSBs. Finally, some future research directions are provided to improve the device performance further.

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Solid-State Electrolytes for Lithium–Sulfur Batteries: Challenges, Progress, and Strategies

Cited by 17 publications

References 89 publications

Progress and Perspectives on the Development of Pouch‐Type Lithium Metal Batteries

Progress and Perspectives on the Development of Pouch‐Type Lithium Metal Batteries

Recent Development in Novel Lithium-Sulfur Nanofiber Separators: A Review of the Latest Fabrication and Performance Optimizations

Solutions to the Challenges of Lithium–Sulfur Batteries by Carbon Nanotubes

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