Facet‐Termination Promoted Uniform Zn (100) Deposition for High‐Stable Zinc‐Ion Batteries

Reversibility, usually evaluated by Coulombic efficiency (CE) and limited by dendrite growth, has become the major roadblock toward the widespread commercialization of zincion batteries. Tailoring the Zn deposition behavior is vital to prevent dendrite growth. In this work, the facet‐terminator seri...

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Bibliographic Details
Published in:Advanced energy materials 2023-08, Vol.13 (31), p.n/a
Main Authors: Wang, Yifan, Mo, Li'e, Zhang, Xianxi, Ren, Yingke, Wei, Tingting, Li, Zhaoqian, Huang, Yang, Zhang, Hong, Cao, Guozhong, Hu, Linhua
Format: Article
Language:English
Subjects:
amino acid additives
Anodes
aqueous zinc‐ion batteries
Commercialization
dendrites
Deposition
facet‐termination
interfaces
Zinc
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Summary:Reversibility, usually evaluated by Coulombic efficiency (CE) and limited by dendrite growth, has become the major roadblock toward the widespread commercialization of zincion batteries. Tailoring the Zn deposition behavior is vital to prevent dendrite growth. In this work, the facet‐terminator serine is introduced to modulate the interface and obstruct the rampant growth of the Zn (100) plane. The serine cation (Ser+) is revealed to preferentially adsorb onto the electrode/electrolyte interface, suppressing the interfacial parasitic reaction. Theoretical analysis and postmortem/operando experimental techniques indicate that the Ser+ bestows (100)‐dominated morphology to zinc anodes, enabling a highly reversible and dendrite‐free Zn anode. These features endow the Zn anode with a long cyclic life of more than 800 h for Zn//Zn batteries and a high average Coulombic efficiency of 99.8% at 5 mA cm−2 and 5 mAh cm−2 for Zn//Cu batteries. When assembling with commercial V2O5, the full battery delivers a high capacity of 345.1 mAh g−1 at 5 A g−1 with a retention of 74.1% over 2000 cycles. In this paper, a (100) facet‐termination engineering strategy is proposed via serine cations (Ser+) strongly chemical absorption onto the anode/electrolyte interface. The Ser+ forms a protective layer on the (100) facet to restrict the Zn [100]‐orientation growth, enabling a dendrite‐free anode surface, and endowing the battery with highly cyclic reversibility and stability.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.202301517