In Situ Construction of Sodiophilic Alloy Interface Enabled Homogenous Na Nucleation and Deposition for Sodium Metal Anode

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

4 Scopus Citations
View graph of relations


  • Congyin Liu
  • Yangyang Xie
  • Huangxu Li
  • Jingyu Xu
  • Zhian Zhang

Related Research Unit(s)


Original languageEnglish
Article number080521
Journal / PublicationJournal of the Electrochemical Society
Issue number8
Online published24 Aug 2022
Publication statusPublished - Aug 2022


The sodium (Na) metal anode is a desirable anode for the next-generation batteries because of its abundant resources and the high specific capacity. However, the poor cyclic stability hinders its practical application. In this study, we report a facile strategy of in situ constructing sodiophilic alloying sites for Na metal anodes by using zinc (Zn) foil as the current collector, which enables smooth and compact deposition morphology and excellent cyclic stability. The Zn current collector and the initial deposited Na generate a NaZn13 alloy interface, which can guide the subsequent plating/stripping behavior of Na. As a result, the Na metal anode with Zn current collector exhibits ultrahigh stability with Coulombic efficiency of 99.87% (over 450 cycles at 1 mA cm−2 for 1 mAh cm−2). Furthermore, the impressive capacity retention (98.5% after 40 cycles at 0.5 C) in Zn∣∣NVP (Na3V2(PO4)3) batteries suggests the anticipated application prospect of Zn current collector in anode-free Na metal batteries, which opens up a new way for the evolution of the next generation of safe and efficient Na metal anodes.

Research Area(s)


Citation Format(s)