Ultrathin MOF nanosheet assembled highly oriented microporous membrane as an interlayer for lithium-sulfur batteries

Tian, Meng; Pei, Fei; Yao, Ming‐Shui; Fu, Zhaoming; Lin, Lele; Wu, Guozhong; Xu, Gang; Kitagawa, Hiroshi; Fang, Xiaoliang

doi:10.1016/j.ensm.2018.12.016

Cited by 191 publications

(102 citation statements)

References 58 publications

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“…Although these strategies have achieved some success in preventing irreversible polysulfide diffusion, the cycling stability obtained so far is still far from satisfactory. Especially, these designs inevitably introduce additional weight into the battery systems, which would counteract the superiority of high‐energy‐density Li–S batteries . Therefore, it is significant to build more reliable Li–S battery systems, which calls for rational design for simultaneously enhancing both cathodic and anodic electrochemical performance.…”

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confidence: 99%

Single Atom Array Mimic on Ultrathin MOF Nanosheets Boosts the Safety and Life of Lithium–Sulfur Batteries

et al. 2020

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The development of Li–S batteries is largely impeded by the growth of Li dendrites and polysulfide shuttling. To solve these two problems simultaneously, herein the study reports a “single atom array mimic” on ultrathin metal organic framework (MOF) nanosheet‐based bifunctional separator for achieving the highly safe and long life Li–S batteries. In the designed separator, the periodically arranged cobalt atoms coordinated with oxygen atoms (CoO4 moieties) exposed on the surface of ultrathin MOF nanosheets, “single atom array mimic”, can greatly homogenize Li ion flux through the strong Li ion adsorption with O atoms at the interface between anode and separator, leading to stable Li striping/plating. Meantime, at the cathode side, the Co single atom array mimic serves as “traps” to suppress polysulfide shuttling by Lewis acid‐base interaction. As a result, the Li–S coin cells with the bifunctional separator exhibit a long cycle life with an ultralow capacity decay of 0.07% per cycle over 600 cycles. Even with a high sulfur loading of 7.8 mg cm−2, an areal capacity of 5.0 mAh cm−2 can be remained after 200 cycles. Moreover, the assembled Li–S pouch cell displays stable cycling performance under various bending angles, demonstrating the potential for practical applications.

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confidence: 99%

Single Atom Array Mimic on Ultrathin MOF Nanosheets Boosts the Safety and Life of Lithium–Sulfur Batteries

et al. 2020

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“…[71] i) Bending and releasing test, j) stress-strain measurement, and k) stress-strain curve of the MOF-based members. [73] ChemSusChem 2020, 13,1366 -1378 www.chemsuschem.org es and weaknesses of various kinds of 2D materials in separators, these materials are evaluated in five aspects, including mechanical properties (MP), physisorption (PS), chemisorption (CS), electronic conductivity (EC), and ionic diffusion (ID), as shown in Figure 8. More specifically,2 Dm etal oxides are advantageousf or CS, whereas the other four aspects are not impressive.…”

Section: Discussionmentioning

confidence: 99%

“…[76] Recently,ahighly oriented MOF nanosheet, which was prepared by aL BL liquid epitaxy methodw ith controlled thicknesses, was also proposed as the interlayeri nL SBs. [73] This material afforded ag reatlyi mproved rate-capacity (437 mA hg À1 at 5C)a nd cycling stability (604 mAh g À1 after 900 cycles at 1C). Moreover,t he flexibility and elasticity were also increased (Figure 7i-k).…”

Section: Other 2d Materials As Interlayers/separator Additivesmentioning

confidence: 97%

“…h) Enhanced LSBs performance with a clay‐based separator to achieve less overpotential . i) Bending and releasing test, j) stress–strain measurement, and k) stress–strain curve of the MOF‐based members …”

Section: D Nitride/phosphide‐based Interlayers/separator Additivesmentioning

confidence: 99%

“…Metal–organic framework (MOF)‐based interlayers have attracted much attention with their molecular sieving ability in LSBs . Recently, a highly oriented MOF nanosheet, which was prepared by a LBL liquid epitaxy method with controlled thicknesses, was also proposed as the interlayer in LSBs . This material afforded a greatly improved rate‐capacity (437 mA h g −1 at 5 C) and cycling stability (604 mAh g −1 after 900 cycles at 1C).…”

Section: Other 2 D Materials As Interlayers/separator Additivesmentioning

confidence: 99%

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Two‐Dimensional Material‐Functionalized Separators for High‐Energy‐Density Metal–Sulfur and Metal‐Based Batteries

Zhu

Wang

2020

ChemSusChem

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Functional separators have attracted much attention owing to their effectiveness in supporting the stable and safe operation of future ultrahigh‐capacity electrodes, especially sulfur cathodes and metal anodes in rechargeable batteries. Among the functional materials for separator modification, two‐dimensional (2 D) materials offer the unique advantages of intimate coverage, mechanical robustness, and rich surface chemistry. This Minireview summarizes up‐to‐date achievements in the development of 2 D material‐functionalized separators to promote the application of sulfur cathodes and metal anodes. With a deep understanding of the roles of 2 D materials and their precise control in functionalizing separators, 2 D materials will find great opportunities in advancing high‐energy‐density rechargeable batteries.

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Tough and Flexible, Super Ion‐Conductive Electrolyte Membranes for Lithium‐Based Secondary Battery Applications

Mong

Shi

Jeon

et al. 2020

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Recently, stringent requirements brought on by environmental regulations and safety issues are driving the development of solid electrolytes to replace conventional liquid electrolyte systems for lithium‐based secondary batteries (LiBs). However, the low Li‐ion conductivity and/or poor mechanical properties of electrolytes remain the main obstacles hindering their commercialization. Hierarchitectural and composite polymer separators (CPSs) based on electrolyte membranes have been reported as promising tools for both high ionic conductivity and mechanical stability. In light of such work, the new types of flexible electrolytes based on phase‐separated and mixed‐phase morphologies achieved via self‐assembly and the use of functional molecular composites are reviewed along with the fundamental mechanisms associated with such systems. In particular, the structure and morphology, ionic conductivity, thermal/mechanical stability, and fabrication of polymer electrolytes are introduced. Additionally, recent advancements in CPSs including methods of ensuring low interfacial resistance, the respective contributions of these critical factors to the significant functional properties of CPSs, and directions for development and essential applications in the field of CPSs for LiBs are presented. Based on previous works, the perspectives put forth will aid in the design of advanced electrolytes for practical Li secondary batteries in the near future.

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Ultrathin MOF nanosheet assembled highly oriented microporous membrane as an interlayer for lithium-sulfur batteries

Cited by 191 publications

References 58 publications

Single Atom Array Mimic on Ultrathin MOF Nanosheets Boosts the Safety and Life of Lithium–Sulfur Batteries

Single Atom Array Mimic on Ultrathin MOF Nanosheets Boosts the Safety and Life of Lithium–Sulfur Batteries

Two‐Dimensional Material‐Functionalized Separators for High‐Energy‐Density Metal–Sulfur and Metal‐Based Batteries

Tough and Flexible, Super Ion‐Conductive Electrolyte Membranes for Lithium‐Based Secondary Battery Applications

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