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

Literature Information

Publication Date 2023-10-23
DOI 10.1039/D3TA04677J
Impact Factor 12.732
Authors

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


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Abstract

Constructing a hierarchical 3D conductive network structure as the sulfur host is an effective attempt to mitigate the polysulfide (LiPS) shuttle and expedite the reaction kinetics in lithium–sulfur batteries (LSBs). In this research, 3D hollow Ti3C2 MXene spheres have been synthesized by the template method, with 1D carbon nanotubes (CNTs) grown in situ on their surface (Ti3C2@N-CNTs). The hollow Ti3C2 spheres avoid self-stacking thus exposing more active sites, while the 1D CNTs form an interconnected conductive network. The synergistic effect enhances the adsorption and catalytic conversion of LiPSs and simultaneously facilitates rapid ion diffusion and electron transfer. With these advantages, the LSBs constructed from Ti3C2@N-CNTs exhibit a satisfactory initial discharge capacity of 1214 mA h g−1 at 0.2C, as well as the average capacity decay rate per cycle is only 0.015% after 1000 cycles at 1C. Furthermore, an areal capacity of 4.3 mA h cm−2 can be achieved at a higher sulfur loading of 4.8 mg cm−2.

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Source Journal

Journal of Materials Chemistry A

Journal of Materials Chemistry A
CiteScore: 19.5
Self-citation Rate: 4.7%
Articles per Year: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

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