Dual functional effect of the ferroelectricity embedded interlayer in lithium sulfur battery

Son, Byung Dae; Cho, Sung Ho; Bae, Ki Yoon; Kim, Byung Hyuk; Yoon, Woo Young

doi:10.1016/j.jpowsour.2019.02.014

Cited by 25 publications

(19 citation statements)

References 46 publications

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“…The three major peaks at 169.6, 168.4, and 166.9 eV were ascribed to sulfate, thiosulfate complex groups, and polythionate complex, respectively. In addition, two peaks at 163.7 and 162.2 eV could be assigned to the formation of Li 2 S 2 and Li 2 S, respectively [43,44,45]. These results proved that the PPS coating layer could improve the capability of polysulfide absorption.…”

Section: Resultsmentioning

confidence: 81%

A Novel Hierarchically Porous Polypyrrole Sphere Modified Separator for Lithium-Sulfur Batteries

Sun

Zhao

et al. 2019

Polymers

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The commercialization of Lithium-sulfur batteries was limited by the polysulfide shuttle effect, and modifying the routine separator was an effective method to solve this problem. In this work, a novel hierarchically porous polypyrrole sphere (PPS) was successfully prepared by using silica as hard-templates. As-prepared PPS was slurry-coated on the separator, which could reduce the polarization phenomenon of the sulfur cathode, and efficiently immobilize polysulfides. As expected, high sulfur utilization was achieved by suppressing the shuttle effect. When tested in the lithium-sulfur battery, it exhibited a high capacity of 855 mAh·g−1 after 100 cycles at 0.2 C, and delivered a reversible capacity of 507 mAh·g−1 at 3 C, showing excellent electrochemical performance.

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Section: Resultsmentioning

confidence: 81%

A Novel Hierarchically Porous Polypyrrole Sphere Modified Separator for Lithium-Sulfur Batteries

Sun

Zhao

et al. 2019

Polymers

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“…The richness of biomass in nature allows a variety of properties such as high specific surface area, ability to The strategic approach to recharge LiÀ S batteries. [18][19] confine sulfur, and network structure, the obtained carbon host would benefit high sulfur loading and fast electron transfer in sulfur cathode. The advantages of environmentally solid wastes derived carbon for the application of LiÀ S batteries is shown in scheme 2.…”

Section: Why Environmentally Solid Waste-derived Carbon Materials Sus...mentioning

confidence: 99%

“…Figure 1. a) Schematic illustration of the LiÀ S battery; b) the discharge profile of the LiÀ S battery. c)The strategic approach to recharge LiÀ S batteries [18][19]. …”

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confidence: 99%

Environmental Solid Waste‐derived Carbon for Advanced Rechargeable Lithium‐Sulfur Batteries: A Review

Walle

2022

ChemistrySelect

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Lithium‐sulfur (Li−S) batteries are lighter and cheaper than today's electrochemical energy storage devices for the forthcoming generations. Particularly the low price and abundance of sulfur as the cathode material, high energy density, and theoretical capacity are delightful characteristics. However, Li−S batteries have many hindrances to attain their commercial applications. Among the challenges are the polysulfide shuttle effect, the insulating property of sulfur, and large volume expansion during charging‐discharging processes. Researchers have carried out comprehensive research on the potential solutions to these challenges. Environmental waste‐derived carbon has an increasingly important role in the energy storage devices (Li−S batteries) due to their sustainable development, low cost, heteroatom doping, large specific surface area, adjustable pore size, easily available sources, and high electric conductivity, which had a significant effect to enhance electrochemical performance. This review highlighted the research progress on carbon derived from environmental solid wastes for the application of Li−S batteries. Furthermore, the preparation, morphology, and design protocols of carbon derived from solid wastes are elaborated for energy storage devices focused on Li−S batteries. These properties inspire researchers in the rational design of environmental waste‐derived carbon materials for sustainable and advanced electrochemical energy storage devices.

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“…Figure S1 exhibits the potentiostatic polarization curve of symmetric Li cell sassembled with the Celgard-p and M-Celgard-p separators, respectively. As shown in Figure S1, the polarization current with pristine Celgard-p separator is higher than that of M-Celgard-p obviously, demonstrating good ionic conductivity of M-Celgard-p. 25 Moreover, the transference numbers of Li + -ion through two types of separators were calculated from Figure S1, which are 0.66 (M-Celgard-p) and 0.43 (Celgard-p). This result manifests that the nano-SiO 2 @PPC electrolyte coating can increase the migration efficiency of Li + -ion through the Celgard-p separator.…”

Section: S 6 Diffusion Testingmentioning

confidence: 99%

A thermo‐stable poly(propylene carbonate)‐based composite separator for lithium‐sulfur batteries under elevated temperatures

et al. 2020

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Lithium-sulfur (Li-S) batteries have a great potential for the future development of energy industry. However, the high-temperature performance of Li-S batteries is still facing great challenge due to the high flammability of the electrolyte, sulfur cathode as well as the separator. The separator modification is an effective method to improve the thermal stability of separator and the electrochemical performance of Li-S batteries under elevated temperatures. However, the reported methods of separator coating are too complicated to be applied in the industrial production. Here, a novel thermo-stable composite separator (M-Celgard-p), in which a layer of silicon dioxide-poly (propylene carbonate) based electrolyte (nano-SiO 2 @PPC) with a high ionic-conductivity of 1.03 × 10 −4 S cm −1 is coated on the commercial Celgard-p separator, is prepared by using a simple dipping method. Compared to the Li-S battery assembled with Celgard-p separator, the M-Celgard-p separator combined with a sulfur/polyacrylonitrile (S/PAN) cathode can improve the electrochemical performance of Li-S batteries, especially their high-temperature stability. As a result, the (S/PAN)/M-Celgard-p/Li cell delivers a high specific capacity of 724.7 mAh g −1 at 1.0 A g −1 after 200 cycles and presents a good rate capability of 1408 mAh g −1 at 1.0 A g −1 and 1216 mAh g −1 at 2.0 A g −1. More importantly, the (S/PAN)/M-Celgard-p/Li cell can exhibit a capacity retention ratio of 69.4% after 200 cycles at 60 C. The M-Celgard-p separator with high Li-ion conductivity can not only block the "shuttle-effect" of polysulfides during cycling but also enhance the thermal stability under elevated temperatures. This work presents a simple dipping method to prepare composite separator with excellent thermal stability, which enhance the rate performance and cyclic stability of Li-S batteries under elevated temperatures. We believe this work can provide a new way to develop more reliable Li-S batteries for practical applications.

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Dual functional effect of the ferroelectricity embedded interlayer in lithium sulfur battery

Cited by 25 publications

References 46 publications

A Novel Hierarchically Porous Polypyrrole Sphere Modified Separator for Lithium-Sulfur Batteries

A Novel Hierarchically Porous Polypyrrole Sphere Modified Separator for Lithium-Sulfur Batteries

Environmental Solid Waste‐derived Carbon for Advanced Rechargeable Lithium‐Sulfur Batteries: A Review

A thermo‐stable poly(propylene carbonate)‐based composite separator for lithium‐sulfur batteries under elevated temperatures

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