METHOD OF PRODUCING ELECTRODE, ELECTRODE, AND ALL-SOLID-STATE BATTERY

A slurry is prepared by mixing a solid electrolyte material, an electrode active material, and a dispersion medium. The eluted amount of a halogen element in the dispersion medium in the slurry is measured. When the eluted amount is within a reference range, the slurry is rated as a good slurry. An electrode is produced by applying the good slurry to a surface of a base material and drying.