Lithiophilic Hydrogen-Substituted Graphdiyne Aerogels with Ionically Conductive Channels for High-Performance Lithium Metal Batteries

Xin Gao, Xueli Zheng*, Yusheng Ye, Hiang Kwee Lee, Pu Zhang, Andy Cui, Xin Xiao, Yufei Yang, Yi Cui*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Lithium (Li) metal stands as a promising anode in advancing high-energy-density batteries. However, intrinsic issues associated with metallic Li, especially the dendritic growth, have hindered its practical application. Herein, we focus on molecular combined structural design to develop dendrite-free anodes. Specifically, using hydrogen-substituted graphdiyne (HGDY) aerogel hosts, we successfully fabricated a promising Li composite anode (Li@HGDY). The HGDY aerogel’s lithiophilic nature and hierarchical pores drive molten Li infusion and reduce local current density within the three-dimensional HGDY host. The unique molecular structure of HGDY provides favorable bulk pathways for lithium-ion transport. By simultaneous regulation of electron and ion transport within the HGDY host, uniform lithium stripping/platting is fulfilled. Li@HGDY symmetric cells exhibit a low overpotential and stable cycling. The Li@HGDY||lithium iron phosphate full cell retained 98.1% capacity after 170 cycles at 0.4 C. This study sheds new light on designing high-capacity and long-lasting lithium metal anodes.

Original languageEnglish
Pages (from-to)3044-3050
Number of pages7
JournalNano Letters
Volume24
Issue number10
DOIs
Publication statusPublished - 13 Mar 2024
Externally publishedYes

Keywords

  • Hydrogen-substituted graphdiyne
  • dendritic
  • lithiophilic
  • lithium metal anode

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Gao, X., Zheng, X., Ye, Y., Lee, H. K., Zhang, P., Cui, A., Xiao, X., Yang, Y., & Cui, Y. (2024). Lithiophilic Hydrogen-Substituted Graphdiyne Aerogels with Ionically Conductive Channels for High-Performance Lithium Metal Batteries. Nano Letters, 24(10), 3044-3050. https://doi.org/10.1021/acs.nanolett.3c04370