Hierarchical Nanocapsules of Cu-Doped MoS2@H-Substituted Graphdiyne for Magnesium Storage

Sifei Zhuo*, Gang Huang, Rachid Sougrat, Jing Guo, Nini Wei, Le Shi, Renyuan Li, Hanfeng Liang, Yusuf Shi, Qiuyu Zhang, Peng Wang*, Husam N. Alshareef*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Hierarchical nanocomposites, which integrate electroactive materials into carbonaceous species, are significant in addressing the structural stability and electrical conductivity of electrode materials in post-lithium-ion batteries. Herein, a hierarchical nanocapsule that encapsulates Cu-doped MoS2(Cu-MoS2) nanopetals with inner added skeletons in an organic-carbon-rich nanotube of hydrogen-substituted graphdiyne (HsGDY) has been developed for rechargeable magnesium batteries (RMB). Notably, both the incorporation of Cu in MoS2and the generation of the inner added nanoboxes are developed from a dual-template of Cu-cysteine@HsGDY hybrid nanowire; the synthesis involves two morphology/composition evolutions by CuS@HsGDY intermediates both taking place sequentially in one continuous process. These Cu-doped MoS2nanopetals with stress-release skeletons provide abundant active sites for Mg2+storage. The microporous HsGDY enveloped with an extended π-conjugation system offers more effective electron and ion transfer channels. These advantages work together to make this nanocapsule an effective cathode material for RMB with a large reversible capacity and superior rate and cycling performance.

Original languageEnglish (US)
Pages (from-to)3955-3964
Number of pages10
JournalACS Nano
Volume16
Issue number3
DOIs
StatePublished - Mar 22 2022

Bibliographical note

Funding Information:
The authors acknowledge the financial support from the National Natural Science Foundation of China (No. 22005246), the Fundamental Research Funds for the Central Universities (No. D5000210606), and King Abdullah University of Science and Technology (KAUST).

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

Keywords

  • dual-template
  • hydrogen-substituted graphdiyne
  • multiple geometries
  • nanocapsule
  • rechargeable magnesium battery

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy

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