Free-standing TiO<sub>2</sub>nanograssy tubular hybrid membrane for polysulfide trapping in Li–S battery

Dasarathan, Suriyakumar; Sung, Junghwan; Hong, Jeong‐Won; Jo, Yung-Soo; Kim, Byung Gon; Lee, You-Jin; Choi, Hae-Young; Park, Jun‐Woo; Kim, Doohun

doi:10.1039/d3ra00349c

Cited by 8 publications

(2 citation statements)

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“…Electronic devices such as the internet of things (IoT), wearable devices, and electric vehicles (EVs) require safe lithium-ion batteries (LIBs) with a high energy density that can be rapidly charged. Therefore, for the development of EVs that can be driven for long distances, several recent studies have focused on alternative battery technologies such as lithium-sulfur batteries [1][2][3][4] with a high theoretical capacity and highenergy-density nickel-rich layered oxide cathodes [5][6][7] . Commercial LIBs containing liquid electrolytes comprising flammable organic components are unsafe and often catch fire or explode, as highlighted by numerous incidents involving fires in EVs and smartphones.…”

Section: Introductionmentioning

confidence: 99%

Infiltration -driven performance enhancement of poly-crystalline cathodes in all-solid-state batteries

Park,

Sung,

Heo

et al. 2024

Preprint

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All-solid-state batteries (ASSBs) with adequately selected cathode materials exhibit a higher energy density and better safety than conventional lithium-ion batteries (LIBs ). Ni-rich layered cathodes are benchmark materials for traditional LIBs owing to their high energy density. Recent studies have highlighted the advantages of using crack-free, single-crystalline cathode materials in ASSBs . In this study, a scalable infiltration sheet-type process was used to fabricate composite electrodes with different cathode-material morphologies for ASSBs . Typically, crack-free single-crystalline materials exhibit a better retention performance and lower rate capability than polycrystalline cathode materials. In this study, Li6PS5Cl-infiltrated polycrystalline electrodes showed an excellent retention performance and rate capability. Galvanostatic intermittent titration technique analysis and transmission electron microscopy confirmed severe polarization and the presence of a rock-salt-structure layer in cathode particles, indicating side reactions within the layered structure of the material. In contrast, composite electrodes comprising polycrystalline cathode materials infiltrated with the solid electrolyte Li6PS5Cl showed an excellent electrochemical performance owing to intimate electrode–electrolyte interfacial contact. This study confirms the critical influence of interface engineering and material morphology on the overall performance and stability of ASSBs, and could facilitate the development of high-performance ASSBs in the future .

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Section: Introductionmentioning

confidence: 99%

Infiltration -driven performance enhancement of poly-crystalline cathodes in all-solid-state batteries

Park,

Sung,

Heo

et al. 2024

Preprint

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“…Finally, upscaling of the TNT layers from the laboratory scale to large-or fullscale synthesis will be discussed, paving the way for industrial production of TNT layers for their commercial employment in conventional photocatalytic and other applications. Though also many other interesting studies were carried out within the last ∼3-5 years for the use of TNT layers in different application, for instance on further improvement on photoelectrocatalysis (PEC) [43][44][45][46] or Liion batteries, [47][48][49][50] deeper investigations on cell response on TNT layers, [51][52][53][54] or the use of TNT layers as ion sieves for Li extraction, [55] this review does not focus on these applications. The reason is that many other recently pub-lished review articles, as mentioned above, are focused on them.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in TiO₂ nanotube layers – A mini review of the latest developments in nanotube preparation and applications in photocatalysis and microwave sensing

Sopha,

Alijani,

Sepúlveda

et al. 2023

Nano Select

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Self‐organized anodic TiO2 nanotube (TNT) layers prepared by anodization of Ti substrates have attracted great interest within the last 20 years, due to their unique properties and low‐cost synthesis. This mini review article aims to shortly summarize the most recent developments in the TNT layer synthesis and applications. It presents the synthesis of high aspect ratio (HAR) TNT layers in a short time by accelerating the TNT layer growth rates in lactic acid containing electrolytes. Furthermore, the etching of TNT layers towards TNT bundles of homogeneous size and single tube powders is discussed, as well as the possibility to grow TNT layers on non‐planar Ti substrates, which cannot be directly connected to the potentiostat (e.g., Ti spheres or 3D Ti meshes). As a relatively new application, the employment of TNT layers in microwave resonator sensors is introduced. Last, but not least, approaches of upscaling the TNT layer size from the laboratory scale towards significantly larger scale are outlined and reviewed.

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A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes

Heo,

Hong,

et al. 2024

Advanced Science

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Lithium–sulfur (Li‐S) batteries represent a promising solution for achieving high energy densities exceeding 500 Wh kg−1, leveraging cathode materials with theoretical energy densities up to 2600 Wh kg−1. These batteries are also cost‐effective, abundant, and environment‐friendly. In this study, an innovative approach is proposed utilizing highly oxidized single‐walled carbon nanotubes (Ox‐SWCNTs) as a conductive fibrous scaffold and functional interlayer in sulfur cathodes and separators, respectively, to demonstrate large‐area and ultra‐flexible Li‐S batteries with enhanced energy density. The free‐standing sulfur cathodes in the Li‐S cells exhibit high energy density maintaining 806 mAh g−1 even after 100 charge‐discharge cycles. Additionally, oxygen‐containing functional groups on the SWCNTs significantly improve electrochemical performance by promoting the adsorption of lithium polysulfides. Employing Ox‐SWCNTs in both cathodes and interlayers, the study achieves high‐capacity Li‐S pouch cells that consistently deliver a capacity of 1.06 Ah and a high energy density of 909 mAh g−1 over 50 charge‐discharge cycles. This strategy not only significantly enhances the electrochemical performance of Li‐S batteries but also maintains excellent mechanical flexibility under severe deformation, positioning this Ox‐SWCNT‐based architecture as a viable, light‐weight, and ultra‐flexible energy storage solution suitable for commercializing rechargeable Li‐S batteries.

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Free-standing TiO₂nanograssy tubular hybrid membrane for polysulfide trapping in Li–S battery

Abstract: The growth of anodic TiO2 nanotubes with a high layer thickness of greater than 20 μm, “nanograss” structures are typically formed on the outermost surface of TNT walls.

Cited by 8 publications

References 46 publications

Infiltration -driven performance enhancement of poly-crystalline cathodes in all-solid-state batteries

Infiltration -driven performance enhancement of poly-crystalline cathodes in all-solid-state batteries

Recent advances in TiO₂ nanotube layers – A mini review of the latest developments in nanotube preparation and applications in photocatalysis and microwave sensing

A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes

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Free-standing TiO2nanograssy tubular hybrid membrane for polysulfide trapping in Li–S battery

Abstract: The growth of anodic TiO2 nanotubes with a high layer thickness of greater than 20 μm, “nanograss” structures are typically formed on the outermost surface of TNT walls.

Cited by 8 publications

References 46 publications

Infiltration -driven performance enhancement of poly-crystalline cathodes in all-solid-state batteries

Infiltration -driven performance enhancement of poly-crystalline cathodes in all-solid-state batteries

Recent advances in TiO2 nanotube layers – A mini review of the latest developments in nanotube preparation and applications in photocatalysis and microwave sensing

A Promising Approach to Ultra‐Flexible 1 Ah Lithium–Sulfur Batteries Using Oxygen‐Functionalized Single‐Walled Carbon Nanotubes

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Product

Resources

About

Free-standing TiO₂nanograssy tubular hybrid membrane for polysulfide trapping in Li–S battery

Recent advances in TiO₂ nanotube layers – A mini review of the latest developments in nanotube preparation and applications in photocatalysis and microwave sensing