Yu, Tae-Yeon Park, Nam-Yung Kim, Hun Lee, In-Su Lee, Han-Uk Kim, Keun-Hee Cho, Woosuk Jung, Hun-Gi Chung, Kyung Yoon Sun, Yang-Kook 2025-05-22T06:01:56Z 2025-05-22T06:01:56Z 2025-05-21 2025-05 https://pubs.kist.re.kr/handle/201004/152484 All-solid-state batteries (ASSBs) with layered cathodes and sulfide solid electrolytes are promising for next-generation batteries due to their high energy density and safety. However, the use of Co-free and Ni-rich layered cathodes limits performance because of slow Li+ diffusion and mechanical degradation. This study demonstrates that these challenges can be overcome by engineering the microstructures of the cathodes. Microstructurally engineered cathodes with rod-shaped primary particles aligned radially exhibited higher capacity by reducing kinetic hindrance at the end of discharge and improved cycling stability by suppressing microcrack formation. Pouch-type full-cell tests under practical conditions confirmed the effectiveness of the modified microstructure, underscoring the role of the cathode microstructure in determining ASSB performance. Overall, this study provides insights into the design of layered cathode materials, guiding future development of high-energy-density ASSBs with long battery lives. English American Chemical Society Tuning the Lithium Diffusion Kinetics in Co-Free Layered Cathodes for High-Performance All-Solid-State Batteries Article 10.1021/acsenergylett.5c00961 1 ACS Energy Letters, v.10, no.5, pp.2477 - 2486 ACS Energy Letters 10 5 2477 2486 N scie scopus 001477926800001 2-s2.0-105003757285 Chemistry, Physical Electrochemistry Energy & Fuels Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Science & Technology - Other Topics Materials Science Article CAPACITY ELECTROLYTE STABILITY OXIDE CATHODES NI-RICH