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

49 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

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

Fingerprint

Dive into the research topics of 'Hierarchical Nanocapsules of Cu-Doped MoS2@H-Substituted Graphdiyne for Magnesium Storage'. Together they form a unique fingerprint.

Cite this