Lithium-Rich Manganese-Based NCM (Li1.2Ni0.13Co0.13Mn0.54O2) Dry Electrode with High Loading (60 mg/cm2) for Li-Ion Battery, CLIBDEHLLMRNCM

Fabricating Lithium- and Manganese-Rich (LMR) NCM (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.

Notes: (1) Please store the polycrystalline LMR-NCM electrodes in a dry area (glovebox is preferred); (2) The battery electrodes are highly recommended to be dried at 80-100°C in a vacuum oven for 6-12 h before use. 

References: 

1. J. Wang, et al. Lithium- and Manganese-Rich Oxide Cathode Materials for High-Energy Lithium Ion Batteries, Adv Energy Mater., 2016, 6, 1600906.
2. 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. 
   
3. 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.