MoP nanoparticles dispersed on P, N co-doped graphite nanosheets as separator-modified material in high-loading lithium-sulfur batteries

Tian, Jing; Chen, Yu; Zhang, Lele; Peng, Feng; He, Xiaofu; Chen, Liang; Bai, Yulin; Guo, Chunli; Pan, Yuede; Li, Gang; Liu, Yanzhen; Chen, Han

doi:10.1016/j.apsusc.2023.157050

Cited by 13 publications

(4 citation statements)

References 63 publications

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“…However, the preparation of MoP usually requires high-temperature annealing and subsequent cleaning of residual impurities. [22,32] This preparation method makes it difficult to uniformly load MoP on the NCF surface. Moreover, the hightemperature phosphating process will destroy the network structure of NCF, making it impossible to obtain a complete interlayer.…”

Section: Resultsmentioning

confidence: 99%

“…This result indicates that Li 2 S can effectively deposit, which is consistent with reports in the literature. [22,42] In order to study high specific energy Li-S batteries, the amount of electrolyte used was further explored as a parameter. [43] Therefore, the electrolyte/sulfur (E/S) ratios were further explored (Figure S8, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…[21] Transition metal phosphates have a high catalytic activity, which can effectively accelerate the conversion of LiPSs. [22] Among them, MoP possesses better electrical conductivity, which can promote the rapid transfer of electrons and suppress the shuttle effect of LiPSs. [23] Moreover, transition metal phosphides have observed similarities to metal chalcogenides in their bonding schemes, e.g., MoSe 2 and MoP have a similar lattice structure.…”

Section: Introductionmentioning

confidence: 99%

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Two‐Step Catalytic Against Polysulfide Shuttling to Enhance Redox Conversion for Advanced Lithium–Sulfur Batteries

Tian,

Li,

et al. 2023

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The development of lithium–sulfur batteries is seriously hindered by the shuttle effect of lithium polysulfides (LiPSs) and the low electrical conductivity of sulfur. To solve these problems, efficient catalysts can be used to improve the conversion rate of LiPSs and the conductivity of sulfur cathode. Herein, annealed melamine foam supported MoSe2 (NCF@MoSe2) is used as interlayer and the MoSe2/MoP heterojunction obtained by phosphating MoSe2 is further used as the catalyst material for metal fusion with a sulfur element. The interlayer can not only improve the electrical conductivity and effectively adsorb and catalyze LiPSs, but more importantly, the MoSe2/MoP heterojunction can also effectively adsorb and catalyze LiPSs, so that the batteries have a dual inhibition shuttling effect strategy. Furthermore, the rapid anchor‐diffusion transition of LiPSs, and the suppression of shuttling effects by catalyst materials are elucidated using theoretical calculations and in situ Raman spectroscopy. The two‐step catalytic strategy exhibits a high reversibility of 983 mAh g−1 after 200 cycles at 0.5 C and a high‐rate capacity of 889 mAh g−1 at 5 C. This work provides a feasible solution for the rational design of interlayer and heterojunction materials and is also conducive to the development of more advanced Li–S batteries.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Two‐Step Catalytic Against Polysulfide Shuttling to Enhance Redox Conversion for Advanced Lithium–Sulfur Batteries

Tian,

Li,

et al. 2023

Small

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show abstract

“…14,15 So far, various strategies have been used to improve the performance of LSBs through the design of the electrode structures. 16–18 The most significant and promising method is introducing conductive and stable materials into the cathode system of LSBs, including carbon nanomaterials, 19–21 polymers, 22 metal composites 23 and other multiphase composites. 24,25…”

Section: Introductionmentioning

confidence: 99%

Sulfonic group modified carbon nanotubes: the decorative strategy for enhancing the performance of lithium-sulfur batteries

Yang,

Tang,

Zhang

et al. 2024

New J. Chem.

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Mussel and Cobweb Inspired High Areal Capacity SPAN Electrode

Zuo,

Guo,

Zhang

et al. 2023

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Lithium–sulfur batteries (LSBs) with superior energy density are among the most promising candidates for next‐generation energy storage techniques. Sulfurized polyacrylonitrile (SPAN) exhibits competitive advantages in terms of cycle stability, rate performance as well as cost. However, the preparation of high‐loading SPAN electrodes is still challenging. Herein, inspired by mussel and cobweb, a high‐loading SPAN electrode is enabled by the combination of polydopamine (PDA) coating and a bimodal distributed single‐wall carbon nanotubes (SWCNT) slurry dispersed in polyvinylpyrrolidone (PVP), their synergistic effect not only constructs effective electron percolating networks within the electrode but also make high active material (AM) ratio possible. High areal capacity PDA@SPAN electrode (18.40 mAh cm−2 in the initial cycle) with negligible specific capacity attenuation as the mass loading increasement is realized through the facile slurry casting process. The dynamic N─H…O hydrogen bond is formed between PDA and PVP and the electrode integrity during charge/discharge is greatly strengthened. The battery with an areal AM loading of 7.16 mg cm−2 (5.16 mAh cm−2) retains 92.0% of capacity in 80 cycles and 87.18% in 160 cycles, and it also shows stable cycle performances even with a high loading of 19.79 mg cm−2 and lean electrolyte (3.28 µL mg−1).

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MoP nanoparticles dispersed on P, N co-doped graphite nanosheets as separator-modified material in high-loading lithium-sulfur batteries

Cited by 13 publications

References 63 publications

Two‐Step Catalytic Against Polysulfide Shuttling to Enhance Redox Conversion for Advanced Lithium–Sulfur Batteries

Two‐Step Catalytic Against Polysulfide Shuttling to Enhance Redox Conversion for Advanced Lithium–Sulfur Batteries

Sulfonic group modified carbon nanotubes: the decorative strategy for enhancing the performance of lithium-sulfur batteries

Mussel and Cobweb Inspired High Areal Capacity SPAN Electrode

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