Enhanced Fast‐Charging Performance of High‐Mass‐Loading Mn‐Rich Li[Mn 1‐ x Fe x ]PO 4 Cathodes via LiF‐Less Cathode–Electrolyte Interphase
Sungkyunkwan University · Advanced Energy (United States) · +1 more institution
Abstract
ABSTRACT Mn‐rich Li[Mn 1‐ x Fe x ]PO 4 (LMFP) cathodes are promising candidates for next‐generation lithium‐ion batteries due to their structural stability and cost‐effectiveness. However, under industrially relevant high‐mass‐loading conditions, they still suffer from severe performance degradation, particularly during fast charging. In this study, we systematically demonstrate that charge‐transfer resistance, rather than bulk Li + diffusivity, governs the kinetic limitations of LMFP electrodes with an areal capacity of ∼3.5 mAh cm −2 (∼23 mg cm −2 mass loading). Surface analyses reveal that the buildup of electronically and ionically insulating LiF at the cathode–electrolyte interphase (CEI) is the primary…
Citation impact
- FWCI
- 35.01
- Percentile
- 99%
- References
- 57
Authors
11Topics & keywords
- Cathode
- Interphase
- Electrode
- Work (physics)
- Surface engineering
- Structural stability