Architecting Pyrenyl-graphdiyne Nanowalls for High Capacity and Long-life Lithium Storage

Qingqing An, Yanglin Jiang, Huan He*, Juan Gao*, Peng Wang, Zhiyu Jia*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Graphdiyne, as the novel carbon allotrope, which is composed of sp2- and sp-hybridized carbon, has exhibited excellent catalytic activity and conductivity. It has been applied in series of fields, such as Li-battery, catalyst and energy conversion. Expanding well-defined structures and useful applications of graphdiyne is still full of challenges in material chemistry. Herein, we optimized the synthesis condition of pyrenylgraphdiyne to obtain the nanowall structure. Compared with the typical nanosheet structure, the pyrenyl-graphdiyne nanowalls (Pyr-GDY-NWs) have more area for lithium insertion. Lithium-ion battery featuring Pyr-GDY-NWs-based electrode exhibits a high reversible specific capacity up to 1464 mA·h/g, which is triple than that of the commercial graphite. We also used the theoretical calculation to investigate the mechanism of Li storage in Pyr-GDY-NWs. The experiment and theoretical data showed that Pyr-GDY-NWs had the potential application in lithium batteries. Therefore, Pyr-GDY with a defined structure would be applied in energy storage and energy conversion.

Original languageEnglish
Pages (from-to)1323-1327
Number of pages5
JournalChemical Research in Chinese Universities
Volume37
Issue number6
DOIs
Publication statusPublished - Dec 2021

Keywords

  • Graphdiyne
  • Li-battery
  • Nanowall
  • Pyrene

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