Spinel-Layered Heterostructure Enables Reversible Oxygen Redox in Lithium Manganese Oxide.

ABSTRACT: Lithium-rich manganese-based layered oxides (LRMOs) have emerged as promising cathode materials for next-generation lithium-ion batteries (LIBs), primarily due to their exceptional capacity originating from oxygen redox chemistry. Although Li₂MnO₃ (LMO) has been conventionally identified as the oxygen redox-active component in LRMOs, this layered material shows neither bulk redox activity nor reversible anion redox behavior in the absence of other transition metals (e.g., Ni and Co). Herein, we report a structural-engineered lithium manganese oxide with spinel-layered heterostructures (designated as LMO-SH), which exhibits reversible oxygen redox activities between lattice oxygen (O^2-) and molecular oxygen (O₂) - the first documented instance of

SUBMITTER: Wang Y 

PROVIDER: S-EPMC12402837 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature