Wave-layered dendrite-free lithium deposition with unprecedented long-term cyclability.

Feng, Jiawen; Ge, Bingcheng; Wang, Jing; Zhang, Lu; Liu, Di; Zou, Guodong; Tse, John S.; Fernandez, Carlos; Yan, Xiaobing; Peng, Qiuming

Abstract

Lithium dendrite growth on the anode during cycling leads to poor stability and severe safety issue, hampering long-term cycle for high-energy batteries. Herein, we firstly found that dendrite-free Li can be deposited layer-by-layer on the surface of lithiophilic Li3N (001) or (111) facet, and then synthesized a composite electrode of Li3N involving a high fraction of (001) facet on porous carbon cloth (P-CC), wherein Li3N in-situ formed by immersing of P-CC in a solution of molten Li, offering outstanding electrochemical and battery performance. Unique waved-layered dendrite free Li deposition has been detected during the Li-plating/stripping process. This P-CC/Li3N/Li anode exhibits a cycle lifespan as long as 2000 h with low overpotential of ∼20 mV at 1 mA cm−2 in a symmetrical cell, which overwhelms all similar systems reported so far. Attractively, long-term operations of 35, 200, and 400 h at 10 mA cm−2 can be achieved at temperatures of −10, 25, and 50 °C, respectively. Both experimental and density functional theory calculations confirm that the P-CC/Li3N serves as an appropriate host for Li infusion through an efficient ion conductive network, inducing the nucleation and growth of metallic lithium.

Citation

FENG, J., GE, B., WANG, J., ZHANG, L., LIU, D., ZOU, G., TSE, J.S., FERNANDEZ, C., YAN, X. and PENG, Q. 2023. Wave-layered dendrite-free lithium deposition with unprecedented long-term cyclability. Journal of power sources [online], 560, article 232697. Available from: https://doi.org/10.1016/j.jpowsour.2023.232697

• Journal Article Type: Article
• Acceptance Date: Jan 12, 2023
• Online Publication Date: Jan 25, 2023
• Publication Date: Mar 15, 2023
• Deposit Date: Jan 27, 2023
• Publicly Available Date: Jan 26, 2024
• Journal: Journal of power sources
• Print ISSN: 0378-7753
• Electronic ISSN: 1873-2755
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 560
• Article Number: 232697
• DOI: https://doi.org/10.1016/j.jpowsour.2023.232697
• Keywords: Li metal anode; Dendrite-free; Nucleation; Growth
• Public URL: https://rgu-repository.worktribe.com/output/1867181
• Related Public URLs: https://rgu-repository.worktribe.com/output/1867215