High-Voltage LiCoO2 (LCO, 4.6 V) Cathode Electrode with High Loading (20 mg/cm2, Wet Coating) for Li-Ion Battery, CLIBCELCOHLWC

A High-Voltage LiCoO2 (LCO, 4.6 V) Wet-Coated Cathode Electrode with a high mass loading of 20 mg/cm2 represents an advanced, high-energy-density configuration designed to push conventional cobalt-based cathodes beyond standard 4.2V–4.4V limits. While wet-slurry casting at higher thicknesses (> 15 mg/cm2) presents challenges with binder migration and structural cracking, precise formulation and optimized drying schedules enable stable high-voltage performance.

The typical slurry formulation can be referenced as: (1) Active LCO Powder (95.5-97.0 wt%): High-tap-density, single-crystal or large polycrystalline LCO particles with tailored particle size distributions to optimize packing. (2) Conductive Additives (1.5-2.5 wt%): A hybrid network combining Super P carbon black (for point-to-point particle contact) and Vapor Grown Carbon Fibers (VGCF) or multi-walled carbon nanotubes (CNTs) to maintain long-range electronic percolation through the thick electrode. (3) Binder (1.5-2.0 wt%): High-molecular-weight PVDF (such as Solef 5130 or Kynar HSV 900) dissolved in N-Methyl-2-pyrrolidone (NMP) to provide high peel strength without insulating active surfaces.

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	CLIBCELCOHLWC (C-LIB-CE-LCO-HLWC)
Current collector	12 um aluminum foil with 1 um carbon coating
Dry Coating Material	LCO Polycrystalline powder
Active Portion	90.8%
Electrode Features	(1) Round disc shape: D = 10 -15 mm (2) Rectangle sheet shape:  L100 mm*W75 mm (single-side).                                             L70 mm*W70 mm (double-side)
Area Density (Loading)	20 mg/cm2 (single-side); 40 mg/cm2 (double-side)
Compaction Density	~3.5-4.0 g/cm3
Package Size	Round disk D=10-15 mm (50 pcs/pack) Rectangle sheet with SS & DS coating (5 pcs/pack)
First Discharging Capacity	~190 mAh/g (0.1 C, testing voltage range of 3.0-4.6 V)
First Columbic Efficiency	97.6 %

Notes: (1) Please store the high loading LCO 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. X. Wu, et al. High-Performance, Low-Cost, and Dense-Structure Electrodes with High Mass Loading for Lithium-Ion Batteries, Adv. Funct. Mater., 2019, 29, 1903961
2. Y. Fu, et al. Ultrathick LiCoO2 cathodes with low tortuosity and accelerated kinetics enable high areal capacity and long-life customable batteries, Energy Storage Materials, 2025, 78, 104291