Surface modification of garnet fillers via an acidic small molecule agent enables compatible interfaces and high ion transport in solid-state composite electrolytes

Key Points

• Ion transport is significantly improved with surface-modified garnet fillers, enhancing solid-state electrolyte function.
• The study shows a notable increase in ion conductivity, achieving levels of 2.5 mS/cm in modified composites.
• Assessment using advanced materials characterization techniques reveals that acidic small molecules effectively modify the surfaces of garnet fillers.
• Results suggest that improved interface compatibility may enable greater efficiency in future energy storage applications.