Inhibiting the shuttle effect in lithium–sulfur batteries using a layer-by-layer assembled ion-permselective separator

Gu, Minsu; Lee, Jukyoung; Kim, Yong‐Il; Kim, Joon Soo; Jang, Byung Koog; Lee, Kyu‐Tae; Kim, Byeong Su

doi:10.1039/c4ra09718a

Cited by 70 publications

(56 citation statements)

References 55 publications

(53 reference statements)

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“…These advanced separators can be roughly classifi ed into two classes: cation permselective membrane [ 95,219,[248][249][250][251] and hybrid membrane with additional layer to accommodate polysulfi des. Compared to the intensive studies focused on the electrode and the electrolyte for Li-S batteries in the past decades, little research has been carried out on the separator despite its critical role in the cell performance of Li-S batteries.…”

Section: Separatorsmentioning

confidence: 99%

Recent Advances in Electrolytes for Lithium–Sulfur Batteries

Zhang

Ueno

Dokko

et al. 2015

Advanced Energy Materials

552

510

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lifetimes. In the past two decades, Li-ion batteries have dominated the rechargeable battery market for portable electronic devices such as smart phones, laptops, and other ubiquitous mobile technologies. However, conventional Li-ion batteries, which typically consist of a graphite anode and lithium transition-metal oxide cathode, have insuffi cient energy densities (theoretically, 350-400 W h kg −1 , practically, 100-220 W h kg −1 ) and are expensive. [ 1 ] These disadvantages severely limit their use in power-intensive applications such as long-range electrical vehicles and stationary energy storage. The demand for such new energy-storage systems has stimulated the development of compact and lightweight rechargeable batteries with superior performances, i.e., higher energy densities and longer cycling lifetimes. Li-S batteries, a "beyond Li-ion" technology, with cathodes that are made mainly of elemental sulfur, have a high theoretical specifi c capacity of 1672 mA h g −1 of active material. A sulfur cathode coupled with a Li metal anode is expected to give a theoretical energy density of 2600 W h kg −1 or 2800 W h L −1 when fully discharged, far greater than those of state-of-the-art Li-ion batteries. [ 2 ] In addition, sulfur is naturally abundant, inexpensive, and environmentally friendly, implying that Li-S batteries should be cheaper than currently available Li-ion batteries.There are, however, several serious problems with Li-S batteries, which have limited their commercial success: a) the reactant (sulfur) and product (Li 2 S) of the redox reaction are insoluble and electronically insulating; b) the Li metal anode is reactive and is prone to dendrite formation during cycling, resulting in safety hazards; c) the active materials undergo large volume expansion/contraction during discharge-charge, and this induces mechanical damage to the electrode; and d) the polysulfi de intermediates readily dissolve in the electrolyte and serve as a redox shuttle. Among these problems, the most critical are the dissolution, diffusion, and side reactions of soluble lithium polysulfi des in the electrolytes, as these processes cause problems such as irreversible loss of active materials from the cathode, low coulombic effi ciency, poor stability, rapid capacity fading, and high self-discharge. As shown in Figure 1 , the common Li-S battery architecture consists of a sulfur cathode (usually a S/C composite) and a Li metal anode The rapidly increasing demand for electrical and hybrid vehicles and stationary energy storage requires the development of "beyond Li-ion batteries" with high energy densities that exceed those of state-of-the-art Li-ion batteries. Li-S batteries, which have very high theoretical capacities and energy densities, are believed to be one of the most promising candidates. The sulfur-based electrochemical reaction requires novel electrolytes to replace the classical carbonate-based electrolyte systems inherited from Li-ion batteries because carbonates are incompatible with the intermediate polysulfi des ...

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Section: Separatorsmentioning

confidence: 99%

Recent Advances in Electrolytes for Lithium–Sulfur Batteries

Zhang

Ueno

Dokko

et al. 2015

Advanced Energy Materials

552

510

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“…Functionalization of the polyolefin separator with specific chemical groups that can resist the diffusion of polysulfide species is also a viable way to inhibit the shuttle effect. A highly charged coating layer was created on an O 2 ‐plasma activated PE separator using a layer‐by‐layer self‐assembly procedure with PAA and poly(allylamine hydrochloride) (PAH) (Table entry 15) . This thin layer allows for the free transmittance of Li‐ions, but blocks the diffusion of polysulfide species because of the presence of carboxylic groups in the ionpermselective coating.…”

Section: Advanced Separators For Li–s Batteriesmentioning

confidence: 99%

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

et al. 2016

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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.

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“…However, although initially high the layer by layer deposition resulted in capacity fade. A more practical method involves coating a fixed layer of Nafion TM on the separator to create a ion selective membrane with an incredibly low decay rate of 0.08% per cycle within the first 500 cycles [127]. This results in SO 3 − group coated channels that allow ion hopping of positive charged species but reject negative ions.…”

Section: Interlayer and Interfacial Coatingsmentioning

confidence: 99%

Nanomaterials: Science and applications in the lithium–sulfur battery

et al. 2015

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Reliable and cost-effective technologies for electrical energy storage are in great demand in sectors of the global economy ranging from portable devices, transportation, and sustainable production of electricity from intermittent sources. Among the various electrochemical energy storage options under consideration, rechargeable lithium-sulfur (Li-S) batteries remain the most promising platform for reversibly storing large amounts of electrical energy at moderate cost set by the inherent cell chemistry. The success of Li-S storage technology in living up to this promise calls for solutions to fundamental problems associated with the inherently low electrical conductivity of sulfur and sulfides, and the complex solution chemistry of lithiated sulfur compounds in commonly used electrolytes. These problems appear well posed for innovative solutions using nanomaterials and for fundamental answers guided by the tools of nanotechnology. Beginning with a review of the current understanding of Li-S battery chemistry and operation, this review discusses how advances in nano-characterization and theoretical studies of the Li-S system are helping advance the understanding of the Li-S battery. Factors that prevent Li-S cells from realizing the theoretical capacity set by their chemistry are discussed both in terms of the impressive advances in cell design enabled by nanomaterials and recent progress aimed at nanoengineering the cathode and other cell components. Perspectives and directions for future development of the Li-S storage platform are discussed based on accumulated knowledge from previous efforts in the field as well as from the accumulated experience of the writers of this review.

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Inhibiting the shuttle effect in lithium–sulfur batteries using a layer-by-layer assembled ion-permselective separator

Abstract: A novel strategy for introducing ion-permselective properties in a conventional polyethylene (PE) separator to inhibit the shuttle effect of polysulfides in high-performance lithium–sulfur batteries is reported.

Cited by 70 publications

References 55 publications

Recent Advances in Electrolytes for Lithium–Sulfur Batteries

Recent Advances in Electrolytes for Lithium–Sulfur Batteries

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

Nanomaterials: Science and applications in the lithium–sulfur battery

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