Mesoporous carbon nanotube aerogel-sulfur cathodes: A strategy to achieve ultrahigh areal capacity for lithium-sulfur batteries via capillary action

Fang, Zhenhan; Luo, Yufeng; Wu, Hengcai; Yan, Lingjia; Zhao, Fei; Li, Qunqing; Fan, Shanhui; Wang, Jiaping

doi:10.1016/j.carbon.2020.05.047

Cited by 39 publications

(17 citation statements)

References 55 publications

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“…Additionally, the kinetics of sulfur conversion was analyzed as shown in the Supporting Information. The CNTs@Bi 2 S 3 /S cathode shows a clear charge/discharge voltage plateau, which matches well with the cathodic and anodic peaks of the CV profiles. In the discharge process, there are higher and lower voltage plateaus, which contributed 25% (418 mA h g –1 ) and 75% (1225 mA h g –1 ) to the total theoretical specific capacity of sulfur, respectively. , Additionally, the smaller polarization of the CNTs@Bi 2 S 3 /S cathode is definitely testified by a narrower gap (0.15 V) between the discharge and charge plateaus in comparison with the reported articles. − Observably, there is a legible valley at the marked location, which can be put down to the nucleation barrier of insoluble solid lithium sulfides. , The initial discharge capacity of 1212.2 mA h g –1 can be obtained with a Coulombic efficiency of 96%, suggesting the high usage of sulfur.…”

Section: Resultsmentioning

confidence: 75%

Carbon Nanotube-Encapsulated Bi₂S₃ Nanorods as Electrodes for Lithium-Ion Batteries and Lithium–Sulfur Batteries

Zeng

Tang

Zhang

et al. 2021

ACS Sustainable Chem. Eng.

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Bi 2 S 3 has attracted great interest in the field of energy storage due to its unique layer structure and high theoretical capacity. However, the large volume variation and side reaction greatly limit the application of Bi 2 S 3 . Hence, the Bi 2 S 3 nanorodencapsulated into carbon nanotubes (CNTs) were prepared by a facile method. In such a structure, the walls of the CNTs can be used as a physical barrier, which may segregate the Bi 2 S 3 nanorods from the electrolyte to avoid the side reaction. Moreover, enough space in the structure can accommodate the volume variation during cycling to retain the integrity of the electrode and improve the cycling stability. Therefore, as the anode for lithium-ion batteries (LIBs), it shows a high capacity of 581 mA h g −1 after 600 cycles at 1 A g −1 . Meanwhile, as the sulfur host, the conductivity of the cathode is largely enhanced due to the existence of a carbon matrix. Also, the diffusion of lithium polysulfides can be curbed under the synergy of the chemical adsorption of Bi 2 S 3 nanorods and the physical retention of CNTs. Therefore, the CNTs@Bi 2 S 3 /S electrode also exhibits advanced performance in lithium−sulfur batteries (LSBs). This work provides an innovative idea for the application of Bi 2 S 3 in both LIBs and LSBs.

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Section: Resultsmentioning

confidence: 75%

Carbon Nanotube-Encapsulated Bi₂S₃ Nanorods as Electrodes for Lithium-Ion Batteries and Lithium–Sulfur Batteries

Zeng

Tang

Zhang

et al. 2021

ACS Sustainable Chem. Eng.

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“…Figure 4 a depicts that GLC generates only a specific capacity of 1023 mAh g −1 , which is similar to previously reported CC as a carbon supports, whereas MGC generates 1383 mAh g −1 at a constant current density of 1 mA cm −2 [ 21 ]. This can be explained by the physical adsorption and capillary force induced from the meso-/micro-porosity of MGC, which make it adsorb LiPS efficiently [ 22 ]. The hierarchically porous structure of MGC enables the improvement in polysulfide trapping and further redox reactions of liquid to solid reaction, low polysulfide formation reaction; Li 2 S x (x = 1 or 2), which is evidenced by the increased capacity of the low plateau region below 2.1 V vs. Li/Li + in discharge profile.…”

Section: Resultsmentioning

confidence: 99%

Hierarchical Porous, N-Containing Carbon Supports for High Loading Sulfur Cathodes

et al. 2021

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The lithium-polysulfide (LiPS) dissolution from the cathode to the organic electrolyte is the main challenge for high-energy-density lithium-sulfur batteries (LSBs). Herein, we present a multi-functional porous carbon, melamine cyanurate (MCA)-glucose-derived carbon (MGC), with superior porosity, electrical conductivity, and polysulfide affinity as an efficient sulfur support to mitigate the shuttle effect. MGC is prepared via a reactive templating approach, wherein the organic MCA crystals are utilized as the pore-/micro-structure-directing agent and nitrogen source. The homogeneous coating of spherical MCA crystal particles with glucose followed by carbonization at 600 °C leads to the formation of hierarchical porous hollow carbon spheres with abundant pyridinic N-functional groups without losing their microstructural ordering. Moreover, MGC enables facile penetration and intensive anchoring of LiPS, especially under high loading sulfur conditions. Consequently, the MGC cathode exhibited a high areal capacity of 5.79 mAh cm−2 at 1 mA cm−2 and high loading sulfur of 6.0 mg cm−2 with a minor capacity decay rate of 0.18% per cycle for 100 cycles.

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“…Various 3D current collectors, such as carbon cloth, 206 melamine 208 /graphene 209 /nickel 210 foam, aerogel, 211 and biomass materials, 207 have been adopted to fabricate high sulfur loading cathodes. In-situ growth of host materials on 3D conductive current collectors ensures their tight contact to facilitate rapid electron transfer while the selfcontained 3D network is beneficial for ion migration.…”

Section: D Collectorsmentioning

confidence: 99%

Designing principles of advanced sulfur cathodes toward practical lithium‐sulfur batteries

Zhang

2022

SusMat

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As one of the most promising candidates for next-generation energy storage systems, lithium-sulfur (Li-S) batteries have gained wide attention owing to their ultrahigh theoretical energy density and low cost. Nevertheless, their road to commercial application is still full of thorns due to the inherent sluggish redox kinetics and severe polysulfides shuttle. Incorporating sulfur cathodes with adsorbents/catalysts has been proposed to be an effective strategy to address the foregoing challenges, whereas the complexity of sulfur cathodes resulting from the intricate design parameters greatly influences the corresponding energy density, which has been frequently ignored. In this review, the recent progress in design strategies of advanced sulfur cathodes is summarized and the significance of compatible regulation among sulfur active materials, tailored hosts, and elaborate cathode configuration is clarified, aiming to bridge the gap between fundamental research and practical application of Li-S batteries. The representative strategies classified by sulfur encapsulation, host architecture, and cathode configuration are first highlighted to illustrate their synergetic contribution to the electrochemical performance improvement. Feasible integration principles are also proposed to guide the practical design of advanced sulfur cathodes. Finally, prospects and future directions are provided to realize high energy density and long-life Li-S batteries.

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Mesoporous carbon nanotube aerogel-sulfur cathodes: A strategy to achieve ultrahigh areal capacity for lithium-sulfur batteries via capillary action

Cited by 39 publications

References 55 publications

Carbon Nanotube-Encapsulated Bi₂S₃ Nanorods as Electrodes for Lithium-Ion Batteries and Lithium–Sulfur Batteries

Carbon Nanotube-Encapsulated Bi₂S₃ Nanorods as Electrodes for Lithium-Ion Batteries and Lithium–Sulfur Batteries

Hierarchical Porous, N-Containing Carbon Supports for High Loading Sulfur Cathodes

Designing principles of advanced sulfur cathodes toward practical lithium‐sulfur batteries

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Mesoporous carbon nanotube aerogel-sulfur cathodes: A strategy to achieve ultrahigh areal capacity for lithium-sulfur batteries via capillary action

Cited by 39 publications

References 55 publications

Carbon Nanotube-Encapsulated Bi2S3 Nanorods as Electrodes for Lithium-Ion Batteries and Lithium–Sulfur Batteries

Carbon Nanotube-Encapsulated Bi2S3 Nanorods as Electrodes for Lithium-Ion Batteries and Lithium–Sulfur Batteries

Hierarchical Porous, N-Containing Carbon Supports for High Loading Sulfur Cathodes

Designing principles of advanced sulfur cathodes toward practical lithium‐sulfur batteries

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Carbon Nanotube-Encapsulated Bi₂S₃ Nanorods as Electrodes for Lithium-Ion Batteries and Lithium–Sulfur Batteries

Carbon Nanotube-Encapsulated Bi₂S₃ Nanorods as Electrodes for Lithium-Ion Batteries and Lithium–Sulfur Batteries