Carbon-containing electrospun nanofibers for lithium–sulfur battery: Current status and future directions

Tong, Zhaoming; Huang, Liang; Lei, Wen; Zhang, Haijun; Zhang, Shaowei

doi:10.1016/j.jechem.2020.05.059

Cited by 89 publications

(43 citation statements)

References 177 publications

(195 reference statements)

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“…Generally, current functionalization of separators can be categorized into two main types: [ 7 ] 1) decorating the commercial separators with coatings that are capable of suppressing LiPSs diffusion, and 2) fabricating novel separators that provide barrier properties against LiPSs. [ 8 ] However, quick cures always bring about some side‐effects while they address the major concerns. For example, due to fact that the majority of sulfur cathodes consist of significant amounts of host materials (normally carbon), [ 2 ] the addition of large amounts of binder or conductive filler in the separator coatings deprecates the cell‐level specific energy.…”

Section: Introductionmentioning

confidence: 99%

Defective Graphitic Carbon Nitride Modified Separators with Efficient Polysulfide Traps and Catalytic Sites for Fast and Reliable Sulfur Electrochemistry

Tong

Huang

Liu

et al. 2021

Adv Funct Materials

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The serious shuttle effect of lithium‐sulfur batteries limits the efficient realization of high rate charging and discharging under high sulfur loading in practical applications. Herein, this work reports a strong mitigation toward lithium polysulfide (LiPSs) adsorption/catalysis by introducing defective graphite phase carbon nitride (g‐C3N4) as an effective additive. Without significant weight increase, the nitrogen deficient g‐C3N4, in the form of ultrafine spindle‐like nitrogen deficient g‐C3N4−x (sCN), can be easily combined with commercial poly‐propylene (PP) separators after hydrophilic modification of polydopamine, which corresponds to an ultralow overall weightiness contribution of 0.17 mg cm−2. Physical/electrochemical characterizations and theoretical studies reveal that sCN exhibits strong electrostatic attraction with LiPSs by nitrogen defects and new formation of cyano groups near edges, thereby maintaining rapid and reliable LiS electrochemistry. Of particular importance is the chainmail catalyst design with separators that enable magic polysulfides adsorption effect and desirable thermostability/wettability, which guarantees the sCNPP‐assembled cells with long and stable durability over 500 cycles at 5.0 C (capacity fading rate: 0.05% per cycle), and a high capability of 476 mAh g−1 is obtained.

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Section: Introductionmentioning

confidence: 99%

Defective Graphitic Carbon Nitride Modified Separators with Efficient Polysulfide Traps and Catalytic Sites for Fast and Reliable Sulfur Electrochemistry

Tong

Huang

Liu

et al. 2021

Adv Funct Materials

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“…Those issues severely reduce the capacity and lead to rapid decay, as well as a low Coulombic efficiency (CE). [6][7][8] Recently, many improvement strategies have been reported. [9,10] For example, Yu et al prepared a Ni 12 P 5 /carbon nanotubes (CNTs)/S composite, which exhibited an initial capacity of 1256 mAh g −1 at 0.5 C and remained 533 mAh g −1 after 1000 cycles.…”

Section: Introductionmentioning

confidence: 99%

A Polysulfides‐Confined All‐in‐One Porous Microcapsule Lithium–Sulfur Battery Cathode

Liu

Zhu

Shen

et al. 2021

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Developing emerging materials for high energy‐density lithium–sulfur (Li–S) batteries is of great significance to suppress the shuttle effect of polysulfides and to accommodate the volumetric change of sulfur. Here, a novel porous microcapsule system containing a carbon nanotubes/tin dioxide quantum dots/S (CNTs/QDs/S) composite core and a porous shell prepared through a liquid‐driven coaxial microfluidic method as Li–S battery cathode is developed. The encapsulated CNTs in the microcapsules provide pathways for electron transport; SnO2 QDs on CNTs immobilize the polysulfides by strong adsorption, which is verified by using density functional theory calculations on binding energies. The porous shell of the microcapsule is beneficial for ion diffusion and electrolyte penetration. The void inside the microcapsule accommodates the volumetric change of sulfur. The Li–S battery based on the porous CNTs/QDs/S microcapsules displays a high capacity of 1025 mAh g−1 after 100 cycles at 0.1 C. When the sulfur loading is 2.03 mg cm−2, the battery shows a stable cycling life of 700 cycles, a Coulombic efficiency exceeding 99.9%, a recoverable rate‐performance during repeated tests, and a good temperature tolerance at both −5 and 45 °C, which indicates a potential for applications at different conditions.

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“…The electrochemical performance of lithium-sulfur batteries using poly(3,4-ethylenedioxythiophene): polystyrene sulfonatesulfur@polyacrylonitrile nanofiber incorporated sulfur hybrid cathode showed a significantly better cycle stability and excellent rate capability compared to the bare sulfur cathode owing to the adsorption effect of the nanofibers [109]. Tong et al summarized the recent development and proposed the existing challenges and future prospects of carbon-containing electrospun nanofibers (CENFs), for the design and architecture of electrochemical components in Li-S energy storage systems [110]. PMMA decomposed in the carbonization process and induced the mesohollows and micropores.…”

Section: Lithium-sulfur Batteriesmentioning

confidence: 99%

The Role of Electrospun Nanomaterials in the Future of Energy and Environment

2021

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Electrospinning is one of the most successful and efficient techniques for the fabrication of one-dimensional nanofibrous materials as they have widely been utilized in multiple application fields due to their intrinsic properties like high porosity, large surface area, good connectivity, wettability, and ease of fabrication from various materials. Together with current trends on energy conservation and environment remediation, a number of researchers have focused on the applications of nanofibers and their composites in this field as they have achieved some key results along the way with multiple materials and designs. In this review, recent advances on the application of nanofibers in the areas—including energy conversion, energy storage, and environmental aspects—are summarized with an outlook on their materials and structural designs. Also, this will provide a detailed overview on the future directions of demanding energy and environment fields.

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Carbon-containing electrospun nanofibers for lithium–sulfur battery: Current status and future directions

Cited by 89 publications

References 177 publications

Defective Graphitic Carbon Nitride Modified Separators with Efficient Polysulfide Traps and Catalytic Sites for Fast and Reliable Sulfur Electrochemistry

Defective Graphitic Carbon Nitride Modified Separators with Efficient Polysulfide Traps and Catalytic Sites for Fast and Reliable Sulfur Electrochemistry

A Polysulfides‐Confined All‐in‐One Porous Microcapsule Lithium–Sulfur Battery Cathode

The Role of Electrospun Nanomaterials in the Future of Energy and Environment

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