Dendrite-free and corrosion-resistant sodium metal anode for enhanced sodium batteries

Lu Q, Omar A, Hantusch M, Oswald S, Ding L, Nielsch K, Mikhailova D (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Applied Surface Science Elsevier

Book Volume: 600

Article Number: 154168

DOI: 10.1016/j.apsusc.2022.154168

Abstract

Because of the high theoretical special capacity, low cost, and low redox potential of sodium (Na) metal, it has been regarded as an ultimate anode for high-energy–density Na metal batteries. Nevertheless, Na metal suffers from dendrite formation due to a non-uniform Na deposition and unstable interface between Na and electrolyte, resulting in a short circuit and low Coulombic efficiency. Herein, a Zn coating on the Na metal surface as a nucleation and protective layer was fabricated through an in-situ chemical method involving a simple dripping ZnCl2-tetrahydrofuran solution. The Zn coating endows Na with corrosion-resistance in organic ether-based electrolytes and a polysulfide solution. More importantly, Zn coating on Na enables a low nucleation overpotential due to its sodiophilic property, giving rise to a uniform Na deposition. Consequently, Zn-coated Na showed a stable cycling over 1200 h at 1 mA cm−2 with a high capacity of 2 mA h cm−2 in symmetric cells. When combined with Na3V2(PO4)3 cathode, full cells with Zn-coated Na demonstrated a good cycling stability and rate capability. This work presents a simple, effective and promising approach of designing a dendrite-free and corrosion-resistant Na metal anode for enhanced Na metal batteries.

Involved external institutions

Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden DE Germany (DE)

How to cite

APA:

Lu, Q., Omar, A., Hantusch, M., Oswald, S., Ding, L., Nielsch, K., & Mikhailova, D. (2022). Dendrite-free and corrosion-resistant sodium metal anode for enhanced sodium batteries. Applied Surface Science, 600. https://dx.doi.org/10.1016/j.apsusc.2022.154168

MLA:

Lu, Qiongqiong, et al. "Dendrite-free and corrosion-resistant sodium metal anode for enhanced sodium batteries." Applied Surface Science 600 (2022).

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