Electrochemical and microstructural analysis of LiNi_1/3Mn_1/3Co_1/3O₂ cathode composites prepared using the SEED method

Cathode composites were fabricated using the nuclear growth (SEED) method. Compared to mortar mixing, the SEED method demonstrated higher cycle stability, with a 90LiNi_1/3Mn_1/3Co_1/3O₂–10Li₇P₂S₈I composite retaining 99.7% discharge capacity after six cycles compared to 66.1%. Cross-sectional SEM-EDX images suggest that the solid electrolyte was more uniformly distributed in the cathode composite prepared using the SEED method. This study opens up the potential for higher cathode-active material loading ratios.