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Nano Research 2024, 17(4): 2736-2745 https://doi.org/10.1007/s12274-023-6178-9
Research Article | Issue | Published: 25 October 2023

MoP nanoparticles encapsulated in N-doped carbon nanotubes as sulfur host for advanced lithium-sulfur batteries

Show Author's Information Guozhi Wu1,2,§,  Shanqing Li2,§,  Zheng Chen1( ),  Ajiao Sun1,  Jie Yang1,  Sang Woo Joo3( ),  Jiarui Huang1( )
Key Laboratory of Functional Molecular Solids of the Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
Anhui Engineering Research Center of Highly Reactive Micro-Nano Powders, School of Materials and Environmental engineering, Chizhou University, Chizhou 247000, China
School of Mechanical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea

§ Guozhi Wu and Shanqing Li contributed equally to this work.

Keywords:
lithium-sulfur battery, nanotube, N-doped carbon, cathode, MoP
Topics:
Lithium sulfur batteries
Cite this article:
Wu G, Li S, Chen Z, et al. MoP nanoparticles encapsulated in N-doped carbon nanotubes as sulfur host for advanced lithium-sulfur batteries. Nano Research, 2024, 17(4): 2736-2745. https://doi.org/10.1007/s12274-023-6178-9
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Abstract Full text Electronic supplementary material About this article

The low electrical conductivity of sulfur, strong volume expansion, shuttle effect, and sluggish redox reactions in Li-S batteries limit their practical application. MoP nanoparticles encapsulated in nitrogen-doped carbon nanotubes (MoP/NC NTs) were synthesized using MoO3 nanorods as templates via a polypyrrole coating, heat-carbonization, MoO3 partial reduction, ammonia washing, and phosphorization. The MoP/NC NTs had a hollow nanostructure with a high specific surface area, which can alleviate the volume expansion of the cathode and the shuttle effect of polysulfides. The encapsulated MoP nanoparticles can anchor the polysulfides and enhance the redox reaction kinetics. Thus, the MoP/NC NTs combined with sulfur (MoP/S/NC NTs) exhibited 440.8 mAh·g−1 over 500 cycles at 1.0 A·g−1 with a decay rate of 0.06% per cycle. The density functional theory calculations and X-ray photoelectron spectroscopy results confirmed that MoP/NC NTs could anchor polysulfides and alleviate the shuttle effect by chemical interactions. This study supplies a novel route to prepare nanoparticle-embedded in N-doped carbon nanotubes for advanced Li-S battery.


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Electronic supplementary material
About this article

MoP nanoparticles encapsulated in N-doped carbon nanotubes as sulfur host for advanced lithium-sulfur batteries

Show Author's information Guozhi Wu1,2,§, Shanqing Li2,§, Zheng Chen1( ), Ajiao Sun1, Jie Yang1, Sang Woo Joo3( ), Jiarui Huang1( )
Key Laboratory of Functional Molecular Solids of the Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
Anhui Engineering Research Center of Highly Reactive Micro-Nano Powders, School of Materials and Environmental engineering, Chizhou University, Chizhou 247000, China
School of Mechanical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea

§ Guozhi Wu and Shanqing Li contributed equally to this work.

Abstract

The low electrical conductivity of sulfur, strong volume expansion, shuttle effect, and sluggish redox reactions in Li-S batteries limit their practical application. MoP nanoparticles encapsulated in nitrogen-doped carbon nanotubes (MoP/NC NTs) were synthesized using MoO3 nanorods as templates via a polypyrrole coating, heat-carbonization, MoO3 partial reduction, ammonia washing, and phosphorization. The MoP/NC NTs had a hollow nanostructure with a high specific surface area, which can alleviate the volume expansion of the cathode and the shuttle effect of polysulfides. The encapsulated MoP nanoparticles can anchor the polysulfides and enhance the redox reaction kinetics. Thus, the MoP/NC NTs combined with sulfur (MoP/S/NC NTs) exhibited 440.8 mAh·g−1 over 500 cycles at 1.0 A·g−1 with a decay rate of 0.06% per cycle. The density functional theory calculations and X-ray photoelectron spectroscopy results confirmed that MoP/NC NTs could anchor polysulfides and alleviate the shuttle effect by chemical interactions. This study supplies a novel route to prepare nanoparticle-embedded in N-doped carbon nanotubes for advanced Li-S battery.

Keywords: lithium-sulfur battery, nanotube, N-doped carbon, cathode, MoP

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Publication history
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Acknowledgements

Publication history

Received: 24 July 2023
Revised: 04 September 2023
Accepted: 09 September 2023
Published: 25 October 2023
Issue date: April 2024

Copyright

© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

This study was funded by grant NRF-2019R1A5A8080290 of the National Research Foundation of Korea, Excellent Scientific Research and Innovation Team of Anhui Colleges (No. 2022AH010098), and The University Synergy Innovation Program of Anhui Province (Nos. GXXT-2020-073 and GXXT-2020-074).

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