Defect-Engineered β-MnO_2-δ Precursors Control the Structure-Property Relationships in High-Voltage Spinel LiMn_1.5Ni_0.5O_4-δ.

ABSTRACT: This study examines the role of defects in structure-property relationships in spinel LiMn_1.5Ni_0.5O₄ (LMNO) cathode materials, especially in terms of Mn³⁺ content, degree of disorder, and impurity phase, without the use of the traditional high-temperature annealing (≥700 °C used for making disordered LMNO). Two different phases of LMNO (i.e., highly P4₃32-ordered and highly Fd3̅m-disordered) have been prepared from two different β-MnO_2-δ precursors obtained from an argon-rich atmosphere (β-MnO_2-δ (Ar)) and a hydrogen-rich atmosphere [β-MnO_2-δ (H₂)]. The LMNO samples and their corresponding β-MnO_2-δ precursors are thoroughly characterized using different techniq

SUBMITTER: Haruna AB 

PROVIDER: S-EPMC8495857 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature