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

Lithiophilic Hydrogen-Substituted Graphdiyne Aerogels with Ionically Conductive Channels for High-Performance Lithium Metal Batteries. Gao, X., Zheng, X., Ye, Y., Lee, H. K., Zhang, P., Cui, A., Xiao, X., Yang, Y., & Cui, Y. Nano Letters, March, 2024.

Paper doi abstract bibtex

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\textbar\textbarlithium 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.

@article{gao_lithiophilic_2024,
	title = {Lithiophilic {Hydrogen}-{Substituted} {Graphdiyne} {Aerogels} with {Ionically} {Conductive} {Channels} for {High}-{Performance} {Lithium} {Metal} {Batteries}},
	issn = {1530-6984},
	url = {https://doi.org/10.1021/acs.nanolett.3c04370},
	doi = {10.1021/acs.nanolett.3c04370},
	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{\textbar}{\textbar}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.},
	urldate = {2024-03-13},
	journal = {Nano Letters},
	author = {Gao, Xin and Zheng, Xueli and Ye, Yusheng and Lee, Hiang Kwee and Zhang, Pu and Cui, Andy and Xiao, Xin and Yang, Yufei and Cui, Yi},
	month = mar,
	year = {2024},
}

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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\\textbar\\textbarlithium iron phosphate full cell retained 98.1% capacity after 170 cycles at 0.4 C. 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