Amphipathic Phenylalanine-Induced Nucleophilic-Hydrophobic Interface Toward Highly Reversible Zn AnodeOACSTPCDEI
Amphipathic Phenylalanine-Induced Nucleophilic-Hydrophobic Interface Toward Highly Reversible Zn Anode
Aqueous Zn2+-ion batteries(AZIBs),recognized for their high security,reliability,and cost efficiency,have garnered considerable attention.However,the prevalent issues of dendrite growth and parasitic reactions at the Zn electrode interface significantly impede their practical application.In this study,we introduced a ubiquitous biomolecule of phenylalanine(Phe)into the electrolyte as a multifunctional additive to improve the reversibility of the Zn anode.Leveraging its exceptional nucleophilic characteristics,Phe molecules tend to coordinate with Zn2+ions for optimizing the solvation environment.Simultaneously,the distinctive lipophilicity of aromatic amino acids empowers Phe with a higher adsorption energy,enabling the construction of a multifunctional protective inter-phase.The hydrophobic benzene ring ligands act as cleaners for repelling H2O molecules,while the hydrophilic hydroxyl and carboxyl groups attract Zn2+ions for homogenizing Zn2+flux.Moreover,the preferential reduction of Phe molecules prior to H2O facilitates the in situ formation of an organic-inorganic hybrid solid electrolyte interphase,enhancing the interfacial stability of the Zn anode.Consequently,Zn‖Zn cells display improved reversibility,achieving an extended cycle life of 5250 h.Additionally,Zn‖LMO full cells exhibit enhanced cyclability of retaining 77.3％capacity after 300 cycles,demon-strating substantial potentialin advancing the commercialization of AZIB s.
Anbin Zhou;Li Li;Feng Wu;Renjie Chen;Huirong Wang;Fengling Zhang;Xin Hu;Zhihang Song;Yi Chen;Yongxin Huang;Yanhua Cui;Yixiu Cui
Beijing Key Laboratory of Environmental Science and Engineering,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,People's Republic of ChinaBeijing Key Laboratory of Environmental Science and Engineering,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,People's Republic of China||Advanced Technology Research Institute,Beijing Institute of Technology,Jinan 250300,People's Republic of China||Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 100081,People's Republic of ChinaBeijing Key Laboratory of Environmental Science and Engineering,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,People's Republic of China||Advanced Technology Research Institute,Beijing Institute of Technology,Jinan 250300,People's Republic of ChinaInstitute of Electronic Engineering,China Academy of Engineering Physics,Mianyang 621900,People's Republic of China
Zn anodePhenylalanineAdsorption energySolvation sheath
《纳微快报（英文）》 2024 (009)
95-109 / 15
This work was supported by the Joint Funds of the National Natural Science Foundation of China(U2130204),the National Natural Science Foundation of China(52002022),the Young Elite Scientists Sponsorship Program by CAST(YESS20200364),and the Beijing Outstanding Young Scientists Program(BJJWZYJH01201910007023).
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