A review on separators for lithium sulfur battery: Progress and prospects

Deng, Nanping; Kang, Weimin; Liu, Yanbo; Ju, Jingge; Wu, Dayong; Li, Lei; Hassan, Bukhari Samman; Cheng, Bowen

doi:10.1016/j.jpowsour.2016.09.044

Cited by 243 publications

(126 citation statements)

References 140 publications

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“…This is somewhat surprising given that the separator is one of the indispensable components in batteries . It has, however, recently been shown that it is indeed possible to improve the performance of Li metal anodes simply by optimizing the separators . A polydopamine‐coated polyethylene (PE) separator was hence found to suppress Li dendrite growth and prolong the cycle life of LMBs due to its improved electrolyte wettability and strong catecholic adhesion of polydopamine onto Li surface .…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose Modified Polyethylene Separators for Lithium Metal Batteries

Pan

Sun

et al. 2018

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Poor cycling stability and safety concerns regarding lithium (Li) metal anodes are two major issues preventing the commercialization of high-energy density Li metal-based batteries. Herein, a novel tri-layer separator design that significantly enhances the cycling stability and safety of Li metal-based batteries is presented. A thin, thermally stable, flexible, and hydrophilic cellulose nanofiber layer, produced using a straightforward paper-making process, is directly laminated on each side of a plasma-treated polyethylene (PE) separator. The 2.5 µm thick, mesoporous (≈20 nm average pore size) cellulose nanofiber layer stabilizes the Li metal anodes by generating a uniform Li flux toward the electrode through its homogenous nanochannels, leading to improved cycling stability. As the tri-layer separator maintains its dimensional stability even at 200 °C when the internal PE layer is melted and blocks the ion transport through the separator, the separator also provides an effective thermal shutdown function. The present nanocellulose-based tri-layer separator design thus significantly facilitates the realization of high-energy density Li metal-based batteries.

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Section: Introductionmentioning

confidence: 99%

Nanocellulose Modified Polyethylene Separators for Lithium Metal Batteries

Pan

Sun

et al. 2018

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113

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“…Very recently the focus has shifted to the separator, as modifying it to contain polysulfide shuttle—to enhance cell performance—has proven to be a viable and perhaps better option. A few reviews have been published in the recent past that documented this progress . However, these reviews do not categorize these modifications into design principles, which we feel are extremely important to the researchers to determine the course of future work.…”

Section: Introductionmentioning

confidence: 99%

Separator Membranes for Lithium–Sulfur Batteries: Design Principles, Structure, and Performance

Gupta

Sivaram

2019

Energy Tech

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Improvement in electrical energy storage systems is one of the most recent research topics of great academic and industrial interest. Lithium‐sulfur (Li‐S) battery systems offer a theoretical energy density an order of magnitude larger than the popular Li‐ion batteries. The principle of working, inherent challenges in utilizing this system for commercial applications, and the various approaches taken to address these challenges are herein discussed in detail. The polysulfide shuttle effect is a major concern that deteriorates electrochemical performance in this system. In the recent past, electrodes have been intricately engineered to tackle this problem. However, more recently, the focus has shifted to the critical role of the separator. Modifying conventional separators or fabricating novel structures to enhance the cell performance appears to be a more feasible option. Some design principles that are critical to the functioning of a separator in Li‐S batteries, namely physisorption, chemisorption, and electrostatic repulsion, are discussed. Many recent papers proposed novel cell configurations with specifically designed functional separators. These reports are classified according to three design principles, analyzed critically, and compared with a view to assess their relative merits and efficacy. Some thoughts on the future directions in the development of an efficient separator are described.

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“…As one of the most promising and high energy storage devices, lithium‐sulfur (Li−S) cell has caused worldwide interest due to its high theoretical energy density of 2600 Wh ⋅ kg −1 and excellent theoretical discharge capacity of 1675 mAh ⋅ g −1 . More importantly, elemental sulfur, the main material of the cathode, is abundant, low‐cost and environmentally friendly in practical application . However, the commercialization process of Li−S cell is hindered by some difficulties and challenges .…”

Section: Introductionmentioning

confidence: 99%

Physical Inhibition and Chemical Confinement of Lithium Polysulfides by Designing a Double‐Layer Composite Separator for Lithium‐Sulfur Battery

et al. 2019

Self Cite

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In this study, a novel double‐layer composite separator based on F‐doped poly‐m‐phenyleneisophthalamide (PMIA) and silicon dioxide (SiO2)−F co‐doped PMIA membrane is designed and prepared by electrospinning technology. The combination of F‐doped PMIA membrane and SiO2−F co‐doped PMIA membrane endows the functional separator with exceedingly high electrolyte uptake and retention, greatly prominent thermostability, and prevented shrinkage. Moreover, its strong physical inhibition and chemisorption can also confine polysulfides. Thus, the lithium‐sulfur (Li−S) batteries using the prepared membrane presented a high initial discharge capacity of 1274.8 mAh g−1 and maintained a reversible discharge capacity of 814.8 mAh g−1 with high Coulombic efficiency of 98.42 % after 600 cycles at 0.5 C. Meanwhile, the cell exhibited small interfacial resistance and excellent rate capacity. The excellent properties were attributed to high ionic conductivity offered by the large pore volume of unique 3D nanofiber network, excellent liquid electrolyte uptake of SiO2−F co‐doped PMIA membrane, and less “shuttle effect” suppressed by both the physical inhibition of polysulfides by the formed gel polymer electrolyte based on F‐doped PMIA membrane and chemical confinement of polysulfides by the addition of F and SiO2. The results indicated that the composite separator through the inexpensive, unsophisticated, and efficient preparation method can provide a good choice for high‐performance Li−S batteries.

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A review on separators for lithium sulfur battery: Progress and prospects

Cited by 243 publications

References 140 publications

Nanocellulose Modified Polyethylene Separators for Lithium Metal Batteries

Nanocellulose Modified Polyethylene Separators for Lithium Metal Batteries

Separator Membranes for Lithium–Sulfur Batteries: Design Principles, Structure, and Performance

Physical Inhibition and Chemical Confinement of Lithium Polysulfides by Designing a Double‐Layer Composite Separator for Lithium‐Sulfur Battery

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