Interaction mechanism between a functionalized protective layer and dissolved polysulfide for extended cycle life of lithium sulfur batteries

Ahn, Wook; Lim, Sung Nam; Lee, Dong Un; Kim, Kwang Bum; Chen, Zhongwei; Yeon, Sun Hwa

doi:10.1039/c5ta01378j

Cited by 86 publications

(41 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Nanostructured Oxides For Li–s Batteriesmentioning

confidence: 99%

“…Complex inorganic oxides materials (e.g., ceramics, and glass fibers) were tried to modify separators for Li–S cells. Effective ion separators were demonstrated by coating montmorillonite on the surface of separators . Glassy fiber was added between the cathode and microporous separator in a Li–S battery, which delivered more than 500 mA h g −1 (60% retention) even after 500 cycles at a 2C rate.…”

Section: Nanostructured Oxides For Li–s Batteriesmentioning

confidence: 99%

See 1 more Smart Citation

Nanostructured Metal Oxides and Sulfides for Lithium–Sulfur Batteries

et al. 2017

View full text Add to dashboard Cite

Lithium-sulfur (Li-S) batteries with high energy density and long cycle life are considered to be one of the most promising next-generation energy-storage systems beyond routine lithium-ion batteries. Various approaches have been proposed to break down technical barriers in Li-S battery systems. The use of nanostructured metal oxides and sulfides for high sulfur utilization and long life span of Li-S batteries is reviewed here. The relationships between the intrinsic properties of metal oxide/sulfide hosts and electrochemical performances of Li-S batteries are discussed. Nanostructured metal oxides/sulfides hosts used in solid sulfur cathodes, separators/interlayers, lithium-metal-anode protection, and lithium polysulfides batteries are discussed respectively. Prospects for the future developments of Li-S batteries with nanostructured metal oxides/sulfides are also discussed.

show abstract

Section: Nanostructured Oxides For Li–s Batteriesmentioning

confidence: 99%

Section: Nanostructured Oxides For Li–s Batteriesmentioning

confidence: 99%

Nanostructured Metal Oxides and Sulfides for Lithium–Sulfur Batteries

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Furthermore, MnO in the composite separator may contribute to the electrocatalytic reduction of S species, which further promotes its battery performance. MMT coatings can also improve the barrier properties of the polyolefin separators because of the electrostatic repulsion between MMT and polysulfides in the electrolyte (Table entry 14) …”

Section: Advanced Separators For Li–s Batteriesmentioning

confidence: 99%

“…MMT coatingscan also improvethe barrierproperties of the polyolefin separators because of the electrostatic repulsion between MMT and polysulfides in the electrolyte (Table 2e ntry 14). [93]…”

Section: Polyolefin Separators Coated With Other Materialsmentioning

confidence: 99%

Advanced Separators for Lithium‐Ion and Lithium–Sulfur Batteries: A Review of Recent Progress

et al. 2016

View full text Add to dashboard Cite

Li-ion and Li-S batteries find enormous applications in different fields, such as electric vehicles and portable electronics. A separator is an indispensable part of the battery design, which functions as a physical barrier for the electrode as well as an electrolyte reservoir for ionic transport. The properties of the separators directly influence the performance of the batteries. Traditional polyolefin separators showed low thermal stability, poor wettability toward the electrolyte, and inadequate barrier properties to polysulfides. To improve the performance and durability of Li-ion and Li-S batteries, development of advanced separators is required. In this review, we summarize recent progress on the fabrication and application of novel separators, including the functionalized polyolefin separator, polymeric separator, and ceramic separator, for Li-ion and Li-S batteries. The characteristics, advantages, and limitations of these separators are discussed. A brief outlook for the future directions of the research in the separators is also provided.

show abstract

“…1 LIBs are hitting a wall due to the restricted theoretical capacity of typical transition metal oxides (e.g., LiNi 1-x-y Co x Mn y O 2 ) and the soaring cost of the raw materials. [4][5][6][7][8][9][10][11][12] These include the incorporation of sulfur in carbon materials and barrier layers (e.g., carbon interlayers and protective layers for preventing the diffusion of polysulfides). 3 Despite recent advances, the electrochemical performances of Li S batteries, such as the capacity, cycle life, and their manufacturing processes, urgently need to be improved for successful commercialization.…”

Section: Introductionmentioning

confidence: 99%

A Sulfur‐layered Separator Enabling an Innovative Flexible LiS Battery without Integrating Elemental Sulfur in the Cathode

Kang

Park

Kang

et al. 2019

Bulletin Korean Chem Soc

View full text Add to dashboard Cite

We present an innovative Li S battery concept for the potential realization of low-cost wearable batteries. A novel Li S battery is constructed by employing a sulfur-free carbon cathode and a sulfur-layered separator fabricated by thermal evaporation at a temperature as low as 120 C. The cell exhibits superior performances compared with a control cell with a sulfur-containing cathode, as all sulfur on the separator takes part in the electrochemical reactions. We reveal that all electrically isolated sulfur from the carbon cathode is successfully converted to polysulfides via the electrode reactions of sulfur molecules at the interface of the carbon surface and the electrolyte solution. Our new concept brings a paradigm shift in the rechargeable battery community.

show abstract

Interaction mechanism between a functionalized protective layer and dissolved polysulfide for extended cycle life of lithium sulfur batteries

Abstract: A sulfur–MWCNT composite battery containing a protective layer based on a MMT-coated separator was examined for its electrochemical properties.

Cited by 86 publications

References 29 publications

Nanostructured Metal Oxides and Sulfides for Lithium–Sulfur Batteries

Nanostructured Metal Oxides and Sulfides for Lithium–Sulfur Batteries

Advanced Separators for Lithium‐Ion and Lithium–Sulfur Batteries: A Review of Recent Progress

A Sulfur‐layered Separator Enabling an Innovative Flexible LiS Battery without Integrating Elemental Sulfur in the Cathode

Contact Info

Product

Resources

About