Stable Zinc Metal Anodes with Textured Crystal Faces and Functional Zinc Compound Coatings. (1st September 2021)

• Record Type: Journal Article
• Authors: Wang, Xia; Meng, Junping; Lin, Xuguang; Yang, Yadi; Zhou, Shuang; Wang, Yaping; Pan, Anqiang
• Is Part Of: Advanced functional materials. Volume 31:Number 48(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-09-01
• Subjects: anticorrosion -- coating layers -- crystal plane texture -- Zn metal anode; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202106114
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: The uneven electrodeposition and inferior corrosion resistance are the fundamental obstacles to achieve stable Zn metal anodes. The features of the electrode surface/interface are closely correlated with the properties. Herein, the Zn surface with more exposed (002)Zn planes is modified through a simple acid‐etching approach. The in situ generated zinc compounds form an interface layer with strong adhesion to the Zn electrode, which can enhance the Zn 2+ ion kinetics and regulate the deposition/dissolution behaviors. A variety of acids with functional cations are selected, among which the phosphoric acid etches the Zn with a higher extent of texturing and generates a more compact layer. The obtained zinc phosphate@Zn electrode enables stable cycling and fast kinetics in symmetrical and full Zn metal batteries. This study provides a new example of combined surface and interface modification toward high‐performance aqueous zinc metal anodes. Abstract : This study develops a simple and effective acid‐etching strategy to modify the Zn metal electrode by regulating the surface with more preferred (002)Zn planes and covering a zinc compound interface layer, which effectively enhances the Zn 2+ ion kinetics and suppresses the Zn dendrite growth.