Active Control of Interface Dynamics in NASICON-Based Rechargeable Solid-State Sodium Batteries

Zheng Sun, Lei Li, Chen Sun, Qing Ni, Yongjie Zhao*, Hui Wu*, Haibo Jin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Severe challenges are restraining the practical application of solid-state batteries, such as the dendrite growth and unsatisfactory compatibility between solid electrolyte and electrode. Here, we propose an interface dynamic control (IDC) strategy to ensure the stable operation of NASICON-based solid-state sodium batteries. First, we introduce intergranular phase (CuO) to effectively promote the densification of Na3Zr2Si2PO12with an optimized ionic conductivity of 1.74 × 10-3S cm-1at 25 °C. Moreover, the kinetically formed Na-Cu-O interlayer reveals outstanding conductive capability. The dramatically reduced interfacial area-specific resistance (70 ohm cm-2) boosts the resistance to Na dendrite growth, ensuring the excellent cycling stability of symmetric Na cells at a current density of 0.4 mA cm-2and room temperature. All-solid-state sodium metal batteries with Na3V1.5Cr0.5(PO4)3cathode and modified Na3Zr2Si2PO12ceramic electrolyte reveal a high retention of 87.4% at 100 mA g-1over 300 cycles. This work opens up a new route for the rational interface design of NASICON-structure solid electrolyte toward the application in the high energy-density and high safety electrochemical energy storage devices.

Original languageEnglish
Pages (from-to)7187-7194
Number of pages8
JournalNano Letters
Volume22
Issue number17
DOIs
Publication statusPublished - 14 Sept 2022

Keywords

  • All-solid-state
  • Dendrite growth
  • Interface Dynamics
  • NASICON electrolyte
  • Sodium metal batteries

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