Tin-based ionic chaperone phases to improve low temperature molten sodium–NaSICON interfaces

Abstract

A novel NaSn intermetallic improves critical electrochemical interfaces between molten sodium and NaSICON ceramic electrolyte at low temperatures (110 °C).

Suppressing void formation in all-solid-state batteries: the role of interfacial adhesion on alkali metal vacancy transport

“…12 Improvement of the wetting between alkali metals and SSE surfaces has been achieved in several studies through the addition of a thin, metallic interlayer phase. 22,23,24 The interlayer materials typically form an alloy with Li (Na) that acts as an alkali conducting buffer that displays strong adhesion with both the Li (Na) metal and the SSE.…”

NASICON‐Type Na3Zr2Si2PO12 Solid‐State Electrolytes for Sodium Batteries**

“…Similarly, a Sn-coated NASI-CON SSE could also enhance the charge transfer and lower interfacial resistance. [65] Moreover, improving the wettability of sodium metal itself by forming alloys is also helpful for good sodium anode/SSE interface. Fu et al [66] fabricated a NaÀ SiO 2 composite anode by introducing amorphous SiO 2 into Na metal, which obtained reduced surface tension and got sufficient contact with NASICON SSEs compared with pristine Na metal (Figure 8d).…”

“…found that after decorating the surface of NASICON electrolytes with SnO 2 , the total resistance significantly reduced from 10000 Ω cm 2 to about 275 Ω cm 2 . Similarly, a Sn‐coated NASICON SSE could also enhance the charge transfer and lower interfacial resistance [65] …”

3D Simulation of Cell Design Influences on Sodium–Iodine Battery Performance

“…[ 28 ] The interfacial resistance between NASICON and molten sodium is very low when coating the NASICON surface with tin or SiO 2. [ 29,30 ] It may be long‐term resistant to aqueous solutions. [ 31 ]…”