Accelerating the Electrochemical Formation of the δ Phase in Manganese-Rich Rocksalt Cathodes.

ABSTRACT: Mn-rich disordered rocksalt materials with Li-excess (DRX) materials have emerged as a promising class of earth-abundant and energy-dense next-generation cathode materials for lithium-ion batteries. Recently, an electrochemical transformation to a spinel-like "δ" phase has been reported in Mn-rich DRX materials, with improved capacity, rate capability, and cycling stability compared with previous DRX compositions. However, this transformation unfolds slowly over the course of cycling, complicating the development and understanding of these materials. In this work, it is reported that the transformation of Mn-rich DRX materials to the promising δ phase can be promoted to occur much more rapidly by electrochemical pulsing at elevated temperature, rate, and voltage. To extend this concept, mi

SUBMITTER: Holstun T 

PROVIDER: S-EPMC11817910 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature