4.6 Article

In situ construction of a stable interface induced by the SnS2 ultra-thin layer for dendrite restriction in a solid-state sodium metal battery

Journal

JOURNAL OF MATERIALS CHEMISTRY A
Volume 9, Issue 29, Pages 16039-16045

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ta04869d

Keywords

-

Funding

  1. National Natural Science Foundation of China [51777138]
  2. Natural Science Foundation of Tianjin City [18JCZDJC99700, 18JCYBJC87400, 18JCQNJC73900]

Ask authors/readers for more resources

The interface issue between Na and NASICON solid electrolyte was improved by fabricating aSnS(2) ultra-thin layer on the surface of Na3Zr2Si2PO12 electrolyte, enabling uniform and rapid transfer of charge and Na+ flux. As a result, the Na symmetric cell can stably operate at room temperature with excellent capacity retention ratios and rate performance, driven by the constructed stable interface.
The interface issue between Na and the NASICON solid electrolyte is recognized as the dominant reason for the growth of Na metal dendrites. In this work, aSnS(2) ultra-thin layer is fabricated on the surface of the Na3Zr2Si2PO12 electrolyte by a fast (1 min) and convenient (air atmosphere) pyrolysis method. A mixed-ion-electron conductor layer consisting of Na-Sn alloy and Na2S constructed in situ through the reaction between the Na metal anode and SnS2 can not only build a continuous and tight bonding interface between Na3Zr2Si2PO12 and Na, but also realize the uniform and rapid transfer of charge and Na+ flux at the interface, resulting in a stable interface during the Na deposition/stripping process. The Na symmetric cell with a maximum current density of 0.9 mA cm(-2) can be stably operated at 0.1-0.4 mA cm(-2) with low overpotential for a long time at room temperature. The Na3V2(PO4)(3)|Na3Zr2Si2PO12-SnS2|Na solid-state battery delivers excellent capacity retention ratios and rate performance, profiting from the constructed stable interface. This work proposes a facial strategy for the improvement of interface design, driving the application of inorganic solid electrolyte in solid-state batteries.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available