Tin sulfide modified separator as an efficient polysulfide trapper for stable cycling performance in Li–S batteries

Moorthy, Brindha; Kwon, Soonho; Kim, Do Kyung; Ragupathy, P.; Lee, Hyuck Mo

doi:10.1039/c8nh00172c

Cited by 105 publications

(58 citation statements)

References 48 publications

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“…Brindha et al have reported a separator modified with SnS 2 nanosheets and used in LSB. [17] Gao et al enhanced the adsorption effect of polysulfides and catalyzed the transformation of polysulfides through cobalt-doped SnS 2 . [18] However, SnS 2 is a semiconductor material with a wide band gap and poor conductivity.…”

Section: Introductionmentioning

confidence: 99%

Highly Stable Lithium–Sulfur Batteries Achieved by a SnS/Porous Carbon Nanosheet Architecture Modified Celgard Separator

Zhang

Cao

et al. 2020

Adv Funct Materials

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Lithium-sulfur batteries (LSB) are one of the potential candidates for the next generation of electrochemical energy storage technology, due to their advantages of high theoretical capacity and high energy density. However, sluggish redox kinetics and the shuttle effect of polysulfides in the cyclic process lead to low sulfur utilization, severe polarization and poor cyclic stability. Herein, an SnS modified porous carbon nanosheet (SnS/PCNS) hybrid material is synthesized by a simple hydrothermal method and used to modify the separator of the LSB for the first time. Specifically, SnS/PCNS can not only adsorb polysulfides, but also enhance the redox reaction of polysulfides. In addition, SnS/PCNS are shown to promote rapid nucleation and uniform deposition of Li 2 S, and to improve the discharge capacity and heighten cyclic stability. The initial capacity is 1270 mAh g −1 at 0.5 C, the slow decay rate of each cycle is 0.039% at 1 C. When the sulfur loading is improved to 6 mg cm −2 , the high reversible capacity is 955.3 mAh g −1 at 0.5 C. As a new polysulfides adsorbent, SnS provides a potential route for the commercialization of LSBs.

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Section: Introductionmentioning

confidence: 99%

Highly Stable Lithium–Sulfur Batteries Achieved by a SnS/Porous Carbon Nanosheet Architecture Modified Celgard Separator

Zhang

Cao

et al. 2020

Adv Funct Materials

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“…Finally,t he preparationo ft he 2D functional separator usually appliesf iltration, whichw ould reduce the industrial production in the future.M ore facile and scalable methods still require exploration. [43] 480 mAh g À1 at 0.67 C800 mAh g À1 after 300 cycles at 100 mA g À1 MoS 2 /3 Dg raphene [46] 600 mAh g À1 at 3Ag À1 689 mAh g À1 after 200 cycles at 0.5 Ag À1 MoS 2 /rGO [47] 615 mAh g À1 at 2C 368 mAh g À1 after 500 cycle at 1C 3D MoS 2 [49] 756 mAh g À1 at 3C 593 mAh g À1 after 600 cycles at 1C MoS 2 -PDDA-PAA [56] 766 mAh g À1 at 3C 423 mAh g À1 after 2000 cycles at 1C Thermals tability (150 8C) Sb 2 S 3 /CNT [55] 530 mAh g À1 at 2C 450 mAh g À1 after 200 cycles at 2C 1.33-2.14 eV binding energy with PS SnS 2 -modified separator [54] 700 mAh g À1 at 5C 597 mAh g À1 after the 500 cycles at 2C [28] 281.8 h, 0.2 mA cm À2 11.8 h, 0.2 mA cm À2 3D conformalGOc oated GF [29] % 320 h, 1mAcm À2 , 1mAh cm À2 % 80 h, 1mAcm À2 , 1mAh cm À2 83 %e fficiency,160 cycles, 1mAcm À2 ,1mAh cm À2 80 %e fficiency,80cycles, 1mAcm À2 ,1mAhcm À2 GO-SiO 2 coated polyolefin [30] 350 cycles( LiCoO 2 cathode, 1C)2 20 cycles N, Sd opedgraphene coated PE [32] 85 %, 350 cycles( LiNi 0.8 Co 0.15 Al 0.05 O 2 cathode,0 .5 C)…”

Section: Discussionmentioning

confidence: 99%

“…Sb 2 S 3 and SnS 2 were also explored as interlayer and functional additives. [54] Benefiting from the 2D structure, researchers appliedt he electrochemical lithium (EC-Li)e xfoliation strategy to construct an ultrathin Sb 2 S 3 nanosheet interlayer to achieve remarkable rate stability (450 mAh g À1 after 200 cycles at a high current density of 2C) ( Figure 4d). [55] The moderate binding energy between Sb 2 S 3 and PS also contributed to this improvedi nterlayer (Figure 5c).…”

Section: Functional Interlayers and Separator-additives During The Elmentioning

confidence: 99%

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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“…Moreover, Kim group fabricated a SnS 2 -modified separator to facilitate the redox reaction of LiPS [ 133 ]. SnS 2 is a conductive, polar, and catalytic material used in the conversion reaction of LiPS.…”

Section: Real Cases Of Modifying Separators For Li-metal Based Batmentioning

confidence: 99%

A Review of Functional Separators for Lithium Metal Battery Applications

et al. 2020

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Lithium metal batteries are considered “rough diamonds” in electrochemical energy storage systems. Li-metal anodes have the versatile advantages of high theoretical capacity, low density, and low reaction potential, making them feasible candidates for next-generation battery applications. However, unsolved problems, such as dendritic growths, high reactivity of Li-metal, low Coulombic efficiency, and safety hazards, still exist and hamper the improvement of cell performance and reliability. The use of functional separators is one of the technologies that can contribute to solving these problems. Recently, functional separators have been actively studied and developed. In this paper, we summarize trends in the research on separators and predict future prospects.

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Tin sulfide modified separator as an efficient polysulfide trapper for stable cycling performance in Li–S batteries

Abstract: Lithium–sulfur batteries (Li–S) are considered the most promising systems for next-generation energy storage devices due to their high theoretical energy density and relatively low cost.

Cited by 105 publications

References 48 publications

Highly Stable Lithium–Sulfur Batteries Achieved by a SnS/Porous Carbon Nanosheet Architecture Modified Celgard Separator

Highly Stable Lithium–Sulfur Batteries Achieved by a SnS/Porous Carbon Nanosheet Architecture Modified Celgard Separator

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

A Review of Functional Separators for Lithium Metal Battery Applications

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