Improved performance of dual-conducting polymer-coated sulfur composite with high sulfur utilization for lithium-sulfur batteries

Jeong, Tae-Gyung; Lee, Yoon-Sung; Cho, Byung Won; Kim, Yong‐Tae; Jung, Hun‐Gi; Chung, Kyung Yoon

doi:10.1016/j.jallcom.2018.01.364

Cited by 29 publications

(11 citation statements)

References 59 publications

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“…Besides the PEDOT coating layer, the PEDOT-co-PEG copolymer solution was also used to encapsulate synthesized sulfur particles [96]. This dual-conducting polymer layer provided transport paths for lithium ions and electrons, and retarded the dissolution of soluble LiPSs into the electrolyte.…”

Section: Coating Layermentioning

confidence: 99%

“…As given in Table 3, after wrapping with PEDOT, the MOF (MIL-101) and Prussian blue analogues (PBAs) exhibit a superior cycling stability in Li-S batteries. In addition, PEDOT-co-PEG copolymer coating [96] presents a superior sulfur confinement than normal PEDOT. Remarkably, the copolymer of sulfur and thiophene including S3BT copolymer [100] and S-PMAT copolymer [101] achieves an ultra-long cycling performance of even more than 500 cycles.…”

Section: Bindermentioning

confidence: 99%

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Application Progress of Polyaniline, Polypyrrole and Polythiophene in Lithium-Sulfur Batteries

Hong

Liu

et al. 2020

Polymers

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With the urgent requirement for high-performance rechargeable Li-S batteries, besides various carbon materials and metal compounds, lots of conducting polymers have been developed and used as components in Li-S batteries. In this review, the synthesis of polyaniline (PANI), polypyrrole (PPy) and polythiophene (PTh) is introduced briefly. Then, the application progress of the three conducting polymers is summarized according to the function in Li-S batteries, including coating layers, conductive hosts, sulfur-containing compounds, separator modifier/functional interlayer, binder and current collector. Finally, according to the current problems of conducting polymers, some practical strategies and potential research directions are put forward. We expect that this review will provide novel design ideas to develop conducting polymer-containing high-performance Li-S batteries.

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Section: Coating Layermentioning

confidence: 99%

Section: Bindermentioning

confidence: 99%

Application Progress of Polyaniline, Polypyrrole and Polythiophene in Lithium-Sulfur Batteries

Hong

Liu

et al. 2020

Polymers

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“…Numerous design methods, including the combination of sulfur and carbon materials [ 9 , 10 , 11 ], metal oxides [ 12 , 13 ], and conductive polymers [ 14 , 15 ], have been explored to avoid these problems. Among these materials, reduced graphene oxide (RGO) (which is a carbon material) has high surface area, excellent intrinsic conductivity, excellent mechanical flexibility, and chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional S/CeO2/RGO Composites as Cathode Materials for Lithium–Sulfur Batteries

et al. 2018

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In this paper, the synthesis of the three-dimensional (3D) composite of spherical reduced graphene oxide (RGO) with uniformly distributed CeO2 particles is reported. This synthesis is done via a facile and large-scalable spray-drying process, and the CeO2/RGO materials are hydrothermally compounded with sulfur. The morphology, composition, structure, and electrochemical properties of the 3D S/CeO2/RGO composite are studied using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), thermal gravimetric analysis (TGA), Raman spectra and X-ray photoelectron spectroscopy (XPS), etc. The electrochemical performance of the composites as electrodes for lithium–sulfur batteries is evaluated. The S/CeO2/RGO composites deliver a high initial capacity of 1054 mAh g−1, and retain a reversible capacity of 792 mAh g−1 after 200 cycles at 0.1 C. Profiting from the combined effect of CeO2 and RGO, the CeO2/RGO materials effectively inhibit the dissolution of polysulfides, and the coating of spherical RGO improves the structural stability as well as conductivity.

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“…28 Recently, surface coating of a porous carbon host using a cationic polymer has been shown to alleviate Li−PS shuttling. 29 In addition, in the context of physical confinement, the coating of a conductive layer on the separator 30−33 or on the host material 32,34 has been demonstrated to increase the electronic and ionic conductivity. 35,36 The second approach is the chemical confinement based on the strong chemical bonding between sulfur and the polymeric host.…”

Section: ■ Introductionmentioning

confidence: 99%

Covalent Triazine Frameworks Incorporating Charged Polypyrrole Channels for High-Performance Lithium–Sulfur Batteries

et al. 2020

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Organosulfur polymers have emerged as promising electrode materials for lithium−sulfur (Li−S) batteries, mainly because of their ability to incorporate and stabilize high sulfur content. The low ionic and electronic conductivity of these polymers, however, limit their cycling performance at high active mass loadings. Moreover, Li−polysulfide (Li−PS) shuttling, a fatal phenomenon in the cyclability of Li−S batteries, can be mitigated via the entrapment of Li−PS by utilizing various supramolecular interactions. Herein, we report a new approach that incorporates one-dimensional charged polypyrrole into a two-dimensional covalent triazine framework (cPpy-S-CTF) synthesized in the presence of elemental sulfur. The cPpy-S-CTF enabled sulfur loadings up to 83 wt %, thanks to the perfluoroaryl-elemental sulfur SN Ar chemistry. Notably, the addition of charged polypyrrole, cPpy, triggered a 3D nanochannel formation in the cPpy-S-CTF with high-affinity anchoring sites toward Li−PS, while achieving decent ionic and electronic conductivity. The cPpy-S-CTF showed a remarkable electrochemical performance with a specific capacity of 1203.4 mA h g −1 at 0.05 C, an initial Coulombic efficiency of 94.1%, and a capacity retention of 86.8% after 500 cycles. These results point to the fact that the incorporation of charged conducting polymers could be a universal strategy to boost the electrochemical performance of organosulfur polymers in Li−S batteries.

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Improved performance of dual-conducting polymer-coated sulfur composite with high sulfur utilization for lithium-sulfur batteries

Cited by 29 publications

References 59 publications

Application Progress of Polyaniline, Polypyrrole and Polythiophene in Lithium-Sulfur Batteries

Application Progress of Polyaniline, Polypyrrole and Polythiophene in Lithium-Sulfur Batteries

Three-Dimensional S/CeO2/RGO Composites as Cathode Materials for Lithium–Sulfur Batteries

Covalent Triazine Frameworks Incorporating Charged Polypyrrole Channels for High-Performance Lithium–Sulfur Batteries

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