Interface-Mediated Jahn–Teller Effect in a Structure-Reinforced LiMnO 2 Cathode
Tohoku University · Nanjing University of Science and Technology · +4 more institutions
Abstract
Lithium manganese-rich oxides are promising cobalt-free cathodes, but their viability is plagued by cooperative Jahn–Teller (CJT) distortions of Mn3+ ions. Conventional strategies only partially mitigate this instability without addressing its electronic origin. Herein, we demonstrate a paradigm of interfacial orbital ordering to suppress CJT distortions at its root. We construct a spinel-layered LiMnO2 heterostructure with noncollinear JT ordering (SLNC-LMO) and benchmark it against a collinear analog. Atomic-resolution imaging confirms the near-orthogonal arrangement of MnO6 octahedra across the interfaces. Combined with density functional theory calculations, we reveal that this noncollinear ordering…
Citation impact
- FWCI
- 33.41
- Percentile
- 99%
- References
- 89
Authors
11- HLHanghui Liu
Tohoku University, Nanjing University of Science and Technology, Institute for Materials Research, Tohoku University
- TSTao Shen
Nanjing University of Science and Technology
- XZXiaohui Zhu
Nanjing University of Information Science and Technology, Advanced Materials and Devices (United States)
- MYMei YangCorresponding
Nanjing University of Science and Technology
- YYYushuai Yao
Nanjing University of Science and Technology
Topics & keywords
- Cathode
- Distortion (music)
- Degeneracy (biology)
- Electrode
- Density functional theory
- Heterojunction
- Work (physics)
- Octahedron