Dual-confined SeS2 cathode based on polyaniline-assisted double-layered micro/mesoporous carbon spheres for advanced Li–SeS2 battery

Hu, Jinlong; Ren, Yilun; Zhang, Lingzhi

doi:10.1016/j.jpowsour.2020.227955

Cited by 29 publications

(17 citation statements)

References 29 publications

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“…A scanning electron microscope (SEM), a transmission electron microscope (TEM), elemental mapping, X‐ray diffraction (XRD), Brunauer−Emmett−Teller (BET), X‐ray photoelectron spectroscopy (XPS), and Raman spectra measurement were used, as the previously published paper shows [16a] . Thermogravimetric analysis (TGA) was tested in air flow (VACUUMTGA‐7 analyzer).…”

Section: Methodsmentioning

confidence: 99%

“…We previously prepared a double‐layered hollow carbon sphere coated with poly(3,4‐ethylenedioxythiophene) and polyaniline as S and SeS 2 host, which showed decent cycling stability due to the distinct advantages of conductive polymer and SeS 2 . [ 16 ] Recently, we reported a novel interlayer coating based on hierarchical porous carbon modified by CoS 2 (CoS 2 /HPC). [ 17 ] Due to the enhanced redox reaction kinetics, the cell with CoS 2 /HPC interlayer exhibited excellent rate ability at 2 C. Inspired by our previous work, we report our latest progress on a multifunctional Co−N−C@C interlayer derived from PAN and a MOF (ZIF‐67) on the substrate.…”

Section: Introductionmentioning

confidence: 99%

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Hierarchical Porous Carbon Membrane Embedded with Pyrolyzed Co‐Based Metal−Organic Frameworks as Multifunctional Interlayers for Advanced Li−SeS₂ Batteries

Wang

et al. 2021

Energy Tech

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Selenium disulfide (SeS2) possesses competitive advantages over pure sulfur or selenium as an electrode material for lithium storage. However, the shutting effect and slow conversion rate of soluble lithium polysulfides/polyselenides (LiPSs/LiPSes) compromise the practical application of Li−SeS2 batteries. Herein, a ZIF‐67@PAN‐derived Co−N−C@C multifunctional porous membrane as the LiPSs/LiPSes trapping barrier for Li−SeS2 batteries is proposed. The hierarchical porous conductive network facilitates the transport of electrons/lithium ions. Meanwhile, the Co−N−C architecture not only has chemical interaction for trapping the mobile LiPSs/LiPSes, but also catalyzes the LiPSs/LiPSes conversion reaction during the cycling process. Benefiting from the multifunctional capabilities, the constructed Li−SeS2 cells with the aforementioned interlayer exhibit a high capacity utilization of 978 mAh g−1 at 0.2 A g−1, together with an excellent rate capacity of 532 mAh g−1 at 3 A g−1 and also superior cycle life with a capacity of 557 mAh g−1 after 300 cycles at 1 A g−1. More strikingly, they show promising capacity with stable cell performance with a mass loading of 4 mg cm−2.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hierarchical Porous Carbon Membrane Embedded with Pyrolyzed Co‐Based Metal−Organic Frameworks as Multifunctional Interlayers for Advanced Li−SeS₂ Batteries

Wang

et al. 2021

Energy Tech

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“…To date, carbon materials ( e.g. , mesoporous carbon [ 11 ], double-layered hollow carbon sphere [ 12 , 13 ], and CMK3 [ 14 ]) and polar materials ( e.g. , metal nitrides [ 15 – 17 ] and metal sulfides [ 18 , 19 ]) have been applied in fabricating SeS 2 cathodes in order to physically or chemically capture active species.…”

Section: Introductionmentioning

confidence: 99%

A Natural Polymer Captor for Immobilizing Polysulfide/Polyselenide in Working Li–SeS2 Batteries

et al. 2021

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SeS2 has become a promising cathode material owing to its enhanced electrical conductivity over sulfur and higher theoretical specific capacity than selenium; however, the working Li–SeS2 batteries have to face the practical challenges from the severe shuttling of soluble dual intermediates of polysulfide and polyselenide, especially in high-SeS2-loading cathodes. Herein, a natural organic polymer, Nicandra physaloides pectin (NPP), is proposed to serve as an effective polysulfide/polyselenide captor to address the shuttling issues. Informed by theoretical calculations, NPP is competent to provide a Lewis base-based strong binding interaction with polysulfides/polyselenides via forming lithium bonds, and it can be homogeneously deposited onto a three-dimensional double-carbon conductive scaffold to finally constitute a polysulfide/polyselenide-immobilizing interlayer. Operando spectroscopy analysis validates the enhanced polysulfide/polyselenide trapping and high conversion efficiency on the constructed interlayer, hence bestowing the Li–SeS2 cells with ultrahigh rate capability (448 mAh g−1 at 10 A g−1), durable cycling lifespan (≈ 0.037% capacity attenuation rate per cycle), and high areal capacity (> 6.5 mAh cm−2) at high SeS2 loading of 15.4 mg cm−2. Importantly, pouch cells assembled with this interlayer exhibit excellent flexibility, decent rate capability with relatively low electrolyte-to-capacity ratio, and stable cycling life even under a low electrolyte condition, promising a low-cost, viable design protocol toward practical Li–SeS2 batteries.

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“…Since Se 1- x S x cathode materials exhibit similar electrochemical behaviors to S, the strategies of immobilizing S should also be effective for Se 1- x S x ( Luo et al, 2014 ). At present, the main host materials of Se 1- x S x are carbonaceous materials ( Sun et al, 2021 ), such as hollow carbon spheres ( Xu et al, 2015 ; Hu et al, 2020 ), mesoporous carbon ( Han et al, 2019 ), carbon nanotubes ( Fan et al, 2018 ; Guan et al, 2019 ; Shen et al, 2020 ), carbon fiber ( Chen et al, 2014 ; Zhang et al, 2017 ), graphene ( Tang et al, 2016 ; Chen et al, 2019 ) and carbonized polyacrylonitrile ( Li et al, 2018 ). Generally, expect serving as hosts for Se 1- x S x , these carbonaceous materials play another dual role of establishing conductive frameworks to facilitate ions/electrons transport and inhibiting the shuttle effect ( Hu et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…At present, the main host materials of Se 1- x S x are carbonaceous materials ( Sun et al, 2021 ), such as hollow carbon spheres ( Xu et al, 2015 ; Hu et al, 2020 ), mesoporous carbon ( Han et al, 2019 ), carbon nanotubes ( Fan et al, 2018 ; Guan et al, 2019 ; Shen et al, 2020 ), carbon fiber ( Chen et al, 2014 ; Zhang et al, 2017 ), graphene ( Tang et al, 2016 ; Chen et al, 2019 ) and carbonized polyacrylonitrile ( Li et al, 2018 ). Generally, expect serving as hosts for Se 1- x S x , these carbonaceous materials play another dual role of establishing conductive frameworks to facilitate ions/electrons transport and inhibiting the shuttle effect ( Hu et al, 2020 ). Nevertheless, the physical adsorption ability of nonpolar pristine carbon materials to polar intermediates is too weak to effectively prevent the dissolution and diffusion of intermediate ( Sun et al, 2016 ; Nazarian-Samani et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Supercritical CO2 Synthesis of Freestanding Se1-xSx Foamy Cathodes for High-Performance Li-Se1-xSx Battery

Fang

Wang

et al. 2021

Front. Chem.

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Selenium-sulfur solid solutions (Se1-xSx) are considered to be a new class of promising cathodic materials for high-performance rechargeable lithium batteries owing to their superior electric conductivity than S and higher theoretical specific capacity than Se. In this work, high-performance Li-Se1-xSx batteries employed freestanding cathodes by encapsulating Se1-xSx in a N-doped carbon framework with three-dimensional (3D) interconnected porous structure (NC@SWCNTs) are proposed. Se1-xSx is uniformly dispersed in 3D porous carbon matrix with the assistance of supercritical CO2 (SC-CO2) technique. Impressively, NC@SWCNTs host not only provides spatial confinement for Se1-xSx and efficient physical/chemical adsorption of intermediates, but also offers a highly conductive framework to facilitate ion/electron transport. More importantly, the Se/S ratio of Se1-xSx plays an important role on the electrochemical performance of Li- Se1-xSx batteries. Benefiting from the rationally designed structure and chemical composition, NC@SWCNTs@Se0.2S0.8 cathode exhibits excellent cyclic stability (632 mA h g−1 at 200 cycle at 0.2 A g−1) and superior rate capability (415 mA h g−1 at 2.0 A g−1) in carbonate-based electrolyte. This novel NC@SWCNTs@Se0.2S0.8 cathode not only introduces a new strategy to design high-performance cathodes, but also provides a new approach to fabricate freestanding cathodes towards practical applications of high-energy-density rechargeable batteries.

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Dual-confined SeS2 cathode based on polyaniline-assisted double-layered micro/mesoporous carbon spheres for advanced Li–SeS2 battery

Cited by 29 publications

References 29 publications

Hierarchical Porous Carbon Membrane Embedded with Pyrolyzed Co‐Based Metal−Organic Frameworks as Multifunctional Interlayers for Advanced Li−SeS₂ Batteries

Hierarchical Porous Carbon Membrane Embedded with Pyrolyzed Co‐Based Metal−Organic Frameworks as Multifunctional Interlayers for Advanced Li−SeS₂ Batteries

A Natural Polymer Captor for Immobilizing Polysulfide/Polyselenide in Working Li–SeS2 Batteries

Supercritical CO2 Synthesis of Freestanding Se1-xSx Foamy Cathodes for High-Performance Li-Se1-xSx Battery

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Dual-confined SeS2 cathode based on polyaniline-assisted double-layered micro/mesoporous carbon spheres for advanced Li–SeS2 battery

Cited by 29 publications

References 29 publications

Hierarchical Porous Carbon Membrane Embedded with Pyrolyzed Co‐Based Metal−Organic Frameworks as Multifunctional Interlayers for Advanced Li−SeS2 Batteries

Hierarchical Porous Carbon Membrane Embedded with Pyrolyzed Co‐Based Metal−Organic Frameworks as Multifunctional Interlayers for Advanced Li−SeS2 Batteries

A Natural Polymer Captor for Immobilizing Polysulfide/Polyselenide in Working Li–SeS2 Batteries

Supercritical CO2 Synthesis of Freestanding Se1-xSx Foamy Cathodes for High-Performance Li-Se1-xSx Battery

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Hierarchical Porous Carbon Membrane Embedded with Pyrolyzed Co‐Based Metal−Organic Frameworks as Multifunctional Interlayers for Advanced Li−SeS₂ Batteries

Hierarchical Porous Carbon Membrane Embedded with Pyrolyzed Co‐Based Metal−Organic Frameworks as Multifunctional Interlayers for Advanced Li−SeS₂ Batteries