Cobalt nitride nanocrystals coated separator as multifunctional interlayer for improving polysulfides regulation

Pu, Jun; Wu, Jianghua; Tan, Yun; Yu, Shaomeng

doi:10.1016/j.jallcom.2022.165964

Cited by 9 publications

(1 citation statement)

References 50 publications

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“…Porous carbon materials can serve as efficient sulfur hosts to improve charge transport and alleviate the volume expansion of sulfur cathodes [14][15][16]. However, non-polar carbon materials hardly capture more soluble polysulfides (LiPS) due to their weak physical absorption, resulting in poor cycling stability of Li-S batteries [17,18]. In recent years, polar metal compounds, such as metal phosphides [19], metal sulfides [20], metal oxides [21], and metal carbides [22], enable to adsorb soluble LiPS through the dipole-dipole interaction and further restrain the shuttle effect.…”

Section: Introductionmentioning

confidence: 99%

Porous FeNi Prussian blue cubes derived carbon-based phosphides as superior sulfur hosts for high-performance lithium–sulfur batteries

Zhang,

Wei,

Liu

et al. 2024

Nanotechnology

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In contrast to lithium-ion batteries, lithium–sulfur batteries have higher theoretical energy density and lower cost, so they would become competitive in the practical application. However, the shuttle effect of polysulfides and slow oxidation–reduction kinetics can degrade their electrochemical performance and cycle life. In this work, we have first developed the porous FeNi Prussian blue cubes as precursors. The calcination in different atmospheres was employed to make precursors convert into common pyrolysis products or novel carbon-based phosphides, and sulfides, labeled as FeNiP/A-C, FeNiP/A-P, and FeNiP/A-S. When these products serve as host materials in the sulfur cathode, the electrochemical performance of lithium–sulfur batteries is in the order of S@FeNiP/A-P > S@FeNiP/A-S > S@FeNiP/A-C. Specifically, the initial discharge capacity of S@FeNiP/A-P can reach 679.1 mAh g−1 at 1 C, and the capacity would maintain 594.6 mAh g−1 after 300 cycles. That is because the combination of carbon-based porous structure and numerous well-dispersed Ni2P/Fe2P active sites contribute FeNiP/A-P to obtain larger lithium-ion diffusion, lower resistance, stronger chemisorption, and more excellent catalytic effect than other samples. This work may deliver that metal–organic framework-derived carbon-based phosphides are more suitable to serve as sulfur hosts than carbon-based sulfides or common pyrolysis products for enhancing Li–S batteries’ performance.

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Section: Introductionmentioning

confidence: 99%

Porous FeNi Prussian blue cubes derived carbon-based phosphides as superior sulfur hosts for high-performance lithium–sulfur batteries

Zhang,

Wei,

Liu

et al. 2024

Nanotechnology

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Progresses and Perspectives of Carbon‐Free Metal Compounds‐Modified Separators for High‐Performance Lithium‐Sulfur Batteries

Lu,

Deng,

Wang

et al. 2024

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Lithium‐sulfur batteries (LSBs) have the advantages of high theoretical specific capacity, excellent energy density, abundant elemental sulfur reserves. However, the LSBs is mainly limited by shuttling of lithium polysulfides (LiPSs), slow reaction kinetics of sulfur cathode. For solving the above problems, by developing high‐performance battery separators, the reversible capacity, Coulombic efficiency (CE) and cycle life of LSBs can be effectively enhanced. Carbon‐free based metal compounds are expected to be highly efficient separator modifiers for a new generation of high‐performance LSBs by virtue of superior chemical adsorption capacity, strong catalytic properties and excellent lithophilicity to a certain extent. They can give play to the synergistic effect of their “adsorption‐catalysis” sites to accelerate the redox kinetics of LiPSs, and their good lithophilicity can accelerate the Li+ transport kinetics, thus showing more remarkable electrochemical performances. However, a comprehensive summary of carbon‐free metal compounds‐modified separators for LSBs is still lacking. Here, this review systematically summarizes the researching progresses and performance characteristics of carbon‐free‐based metal compounds modified materials for separators of LSBs, and summarizes the corresponding mechanisms of using carbon‐based separators to enhance the performance of LSBs. Finally, the review also looks forward to the prospects of LSBs using carbon‐free metal compounds separators.

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Fe3P electrocatalysts assisted carbon based sandwich sulfur cathode “top–bottom” strategy for high rate and high temperature lithium–sulfur batteries

Tan

Wang

et al. 2023

Chemical Engineering Journal

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Cobalt nitride nanocrystals coated separator as multifunctional interlayer for improving polysulfides regulation

Cited by 9 publications

References 50 publications

Porous FeNi Prussian blue cubes derived carbon-based phosphides as superior sulfur hosts for high-performance lithium–sulfur batteries

Porous FeNi Prussian blue cubes derived carbon-based phosphides as superior sulfur hosts for high-performance lithium–sulfur batteries

Progresses and Perspectives of Carbon‐Free Metal Compounds‐Modified Separators for High‐Performance Lithium‐Sulfur Batteries

Fe3P electrocatalysts assisted carbon based sandwich sulfur cathode “top–bottom” strategy for high rate and high temperature lithium–sulfur batteries

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