Feather-Effect-Inspired Superhydrophobic and Zincophilic Strategy for Ultrastable Zn Metal Anodes.
basic_science · Level V
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- Record sourced from PubMed, PMID 40962291.
- Also identified by DOI 10.1021/acs.nanolett.5c03724.
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Abstract
Conventional artificial interface coatings can address the dendrite growth in aqueous zinc-ion batteries (AZIBs) by homogenizing the Zn<sup>2+</sup> flux, but the coatings may still fail due to corrosion by free water molecules. Herein, inspired by the hydrophobic architecture of waterfowl feathers, a dual-functional hexadecanethiol (HDT)-Ag@Zn anode with zincophilic and superhydrophobic characteristics was successfully constructed. A feather-like Ag structure is in situ grown on a zinc substrate via a replacement reaction, and an HDT monolayer can be assembled through molecular self-organization. This cross-scale architecture synergistically optimizes zinc deposition kinetics and suppresses interfacial side reactions. The symmetric battery assembled with an HDT-Ag@Zn anode cycles stably for over 2600 h at 1 mA cm<sup>-2</sup> for 1 mAh cm<sup>-2</sup>. The HDT-Ag@Zn//V<sub>2</sub>O<sub>5</sub> full cell delivers a remarkable capacity retention of 92.2% after 3500 cycles at 5 A g<sup>-1</sup>. This work provides new insights into resolving critical bottlenecks in AZIBs through bioinspired interface design, promoting practical application in next-generation energy storage systems.