Lithium-Rich Manganese-Based Oxides Li1.2Ni0.13Co0.13Mn0.54O2 (LRMOs) Dry Electrode with High Loading (30 mg/cm2) for Li-Ion Battery, CLIBDEHLLRMO12
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Fabricating Lithium- and Manganese-Rich Oxides LRMOs (specifically the Li(1.2)Ni(0.13)Co(0.13)Mn(0.54)O2 stoichiometry) as a high-loading dry electrode is a cutting-edge approach to maximizing energy density. While LMR provides superior specific capacity (~250–280 mAh/g), dry processing addresses the mechanical and chemical instabilities inherent in high-loading electrodes.
Conventional "wet" slurry casting faces severe "mud-cracking" and binder migration issues when mass loadings exceed 20–30 mg/cm². (1) Elimination of Binder Migration: In wet processing, NMP/binder rises to the surface during drying, leaving the bottom of a high-loading electrode brittle. Dry processing creates a uniform 3D PTFE "spider-web" network that holds the LMR particles in place throughout the entire thickness. (2) Reduced Side Reactions: LMR materials are sensitive to moisture and the acidic byproducts of NMP. Dry processing bypasses solvent exposure, preserving the sensitive Li2MnO3 surface phase. (3) High Compaction: Dry electrodes can achieve much higher tap densities. For LMR, which has a lower compact density than high-nickel NCM, this is essential to achieve competitive volumetric energy density.
The LMR NCM coated on aluminum foil electrode (disc, sheet) can be used as lithium-ion battery cathode. The round disc shape with single-side coating is suitable for coin cell testing, while the rectangle sheet shape with single- or double-side coating is designed for single-layer or multiple-layer pouch cell testing.
| Part Number | CLIBDEHLLRMO12 (C-LIB-DEHL-LRMO12) |
| Current collector | 15 um aluminum foil with 1 um carbon coating on each side |
| Coating Material | Li1.2Ni0.13Co0.13Mn0.54O2 powder |
| Coating Slurry Recipe | LRMO12: PVDF: Super P = 96.0% : 2.0% : 2.0% |
| Electrode Dimension |
Rectangle sheet shape: Substrate (L120mm*W90mm) |
| Package Size |
Rectangle sheet with SS/DS coating (5 pcs/pack) |
| Coating Area Density |
30.0 mg/cm2 (single-side) 60.0 mg/cm2 (double-side) |
| Compaction Density | 2.5 g/cm3 (single-side); 2.6 g/cm3 (double-side) |
| First Discharging Capacity |
~289 mAh/g [0.1C, 3.0-5.0 V vs Li/Li+, Half Cell]
|
| First Columbic Efficiency | 92.7 % |
Notes: (1) Please store the LMRO12 dry electrodes in a dry area (glovebox is preferred).
References:
- J. Wang, et al. Lithium- and Manganese-Rich Oxide Cathode Materials for High-Energy Lithium Ion Batteries, Adv Energy Mater., 2016, 6, 1600906.
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Z. Xu, et al. Restraining the Octahedron Collapse in Lithium and Manganese Rich NCM Cathode toward Suppressing Structure Transformation, Adv. Energy Mater., 2022, 12, 2201323.
- H. Pan, et al., The Roles of Ni and Mn in the Thermal Stability of Lithium-Rich Manganese-Rich Oxide Cathode, Adv Energy Mater., 2023, 13, 2203989.