Constructing carbon nanotube-optimized hollow Ti<sub>3</sub>C<sub>2</sub> MXene hierarchical conductive networks for robust lithium–sulfur batteries

Liu, Ran; Zhai, Shengjun; Ye, Zimujun; Liu, Mengzhu; Xu, Yang; Li, Changwen; Wang, Xianbao; Mei, Tao

doi:10.1039/d3ta04677j

J. Mater. Chem. A

2023

DOI: 10.1039/d3ta04677j

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Constructing carbon nanotube-optimized hollow Ti₃C₂ MXene hierarchical conductive networks for robust lithium–sulfur batteries

Ran Liu,

Shengjun Zhai,

Zimujun Ye

et al.

Abstract: Constructing a hierarchical 3D conductive network structure as the sulfur host is an effective attempt to mitigate the polysulfides (LiPSs) shuttle and expedite the reaction kinetics in lithium-sulfur batteries (LSBs)....

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2024

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Cited by 4 publications

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Unraveling the Ionic Storage Mechanism of Flexible Nitrogen‐Doped MXene Films for High‐Performance Aqueous Hybrid Supercapacitors

Xie,

Chen,

Tang

et al. 2024

Small

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Abstract2D MXene nanomaterials have excellent potential for application in novel electrochemical energy storage technologies such as supercapacitors and batteries, but the existing pure MXene is difficult to meet the practical needs. Although the electrochemical properties of modified MXene have been improved, the unclear ion storage mechanism still hinders the development of MXene‐based electrode materials. Herein, the study develops flexible self‐supported nitrogen‐doped Ti3C2 (Py‐Ti3C2) films by the highly mobile, high nitrogen content, oxygen‐free pyridine‐assisted solvothermal method, and then deeply investigates the energy storage mechanism of hybrid supercapacitors in four aqueous electrolytes (H2SO4, Li2SO4, Na2SO4, and MgSO4). The experimental results suggest that the Py‐Ti3C2 film electrode exhibits a pseudocapacitance‐dominated energy storage mechanism. Particularly, the specific capacity of the Py‐Ti3C2 in 1 M H2SO4 (506 F g−1 at 0.1 A g−1) is 4–5 times higher than other electrolytes (≈110 F g−1), which could be attributed to the substantially higher ionic diffusion coefficient of H+ than those of Li+, Na+, Mg2+ with small ionic size, high ionic conductivity, and fast pseudocapacitance response. Theoretical analysis further confirms that Py‐Ti3C2 has strengthened conductivity and electrical double‐layer capacitance performance. Meanwhile, it has lower free energy for protonation and deprotonation of functional groups, which gives excellent pseudocapacitance performance.

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Unraveling the Ionic Storage Mechanism of Flexible Nitrogen‐Doped MXene Films for High‐Performance Aqueous Hybrid Supercapacitors

Xie,

Chen,

Tang

et al. 2024

Small

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Constructing ZnTe-CoTe2 heterostructures for enhanced long cycling performance of lithium-sulfur batteries

Fang,

Liu,

Tan

et al. 2024

Electrochimica Acta

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Hierarchical van der Waals heterostructure with dual-defect sites for bidirectionally catalyzing Li2S nucleation and decomposition in lithium-sulfur batteries

Han,

Shao,

et al. 2024

Journal of Energy Storage

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Constructing carbon nanotube-optimized hollow Ti₃C₂ MXene hierarchical conductive networks for robust lithium–sulfur batteries

Abstract: Constructing a hierarchical 3D conductive network structure as the sulfur host is an effective attempt to mitigate the polysulfides (LiPSs) shuttle and expedite the reaction kinetics in lithium-sulfur batteries (LSBs)....

Cited by 4 publications

References 51 publications

Unraveling the Ionic Storage Mechanism of Flexible Nitrogen‐Doped MXene Films for High‐Performance Aqueous Hybrid Supercapacitors

Unraveling the Ionic Storage Mechanism of Flexible Nitrogen‐Doped MXene Films for High‐Performance Aqueous Hybrid Supercapacitors

Constructing ZnTe-CoTe2 heterostructures for enhanced long cycling performance of lithium-sulfur batteries

Hierarchical van der Waals heterostructure with dual-defect sites for bidirectionally catalyzing Li2S nucleation and decomposition in lithium-sulfur batteries

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Constructing carbon nanotube-optimized hollow Ti3C2 MXene hierarchical conductive networks for robust lithium–sulfur batteries

Abstract: Constructing a hierarchical 3D conductive network structure as the sulfur host is an effective attempt to mitigate the polysulfides (LiPSs) shuttle and expedite the reaction kinetics in lithium-sulfur batteries (LSBs)....

Cited by 4 publications

References 51 publications

Unraveling the Ionic Storage Mechanism of Flexible Nitrogen‐Doped MXene Films for High‐Performance Aqueous Hybrid Supercapacitors

Unraveling the Ionic Storage Mechanism of Flexible Nitrogen‐Doped MXene Films for High‐Performance Aqueous Hybrid Supercapacitors

Constructing ZnTe-CoTe2 heterostructures for enhanced long cycling performance of lithium-sulfur batteries

Hierarchical van der Waals heterostructure with dual-defect sites for bidirectionally catalyzing Li2S nucleation and decomposition in lithium-sulfur batteries

Contact Info

Product

Resources

About

Constructing carbon nanotube-optimized hollow Ti₃C₂ MXene hierarchical conductive networks for robust lithium–sulfur batteries