High Tap Density Graphite Powder for Li-Ion Battery Anode, 100-500 g/bottle, CLIBAHTDG

High-tap-density graphite is essential for maximizing the volumetric energy density of lithium-ion batteries. In industrial production, achieving high tap density (typically >1.0 g/cm^3) involves specific material selection and particle engineering. The tap density of graphite powder is primarily a function of particle morphology and size distribution.

(1) Spheronization: Natural flake graphite is mechanically "rounded" into potato-like spheres. This reduces the specific surface area and allows particles to pack more tightly. Rounded natural graphite can reach tap densities near 1.0 g/cm^3 compared to <0.5 g/cm^3 for raw flakes.

(2) Secondary Particle Granulation: Small synthetic graphite grains are often clustered into larger, denser secondary particles. This "cluster" approach mimics the benefits of spherical shapes while maintaining the structural stability of synthetic graphite.

(3) Particle Size Distribution (PSD) Tuning: A bimodal or multimodal distribution (mixing larger and smaller particles) increases density. The smaller "fine" particles fill the interstitial voids between the larger "coarse" particles, reducing the overall volume occupied by the powder.

(4) Pitch Coating: Coating spherical graphite with a thin layer of amorphous carbon (from coal tar or petroleum pitch) smoothens the particle surface, further increasing tap density and improving electrolyte compatibility.

Part Number	CLIBAHTDG (C-LIB-A-HTDG)
Particle Size Distribution	D10 = 6.55 um, D50 = 14.63 um, D90 = 28.85 um
Tap Density	1.10 g/cm3
Specific Area Density	1.65 m2/g
Water Level	<0.07 wt%
First Discharge Capacity	358.4 mAh/g  Anode recipe: Graphite: SP : SBR: CMC = 91: 5: 2.4: 1.6  Electrolyte: 1M LiPF6 in EC/EMC (1:1) Discharge: 0.1C to 0.001 V Charging: 0.1C to 2 V (cut off current 0.01C)
First Columbic Efficiency	93.2%
Package Grade	100 g, 200 g, and 500 g/bottle (a larger quantity can be supplied upon request)

Notes: (1) Please store the high tap density graphite powder in a dry area (glovebox is preferred); (2) The battery powder is highly recommended to be dried at 80-100°C in a vacuum oven for 6-12 h before use.

References:

1. J. P. Zhang, et al. A wet granulation method to prepare graphite particles with a high tap density for high volumetric energy density lithium-ion storage, New Carbon Materials, 2022, 37, 402-410.
2. H. Han, et al. Microstructure control of the graphite anode with a high density for Li ion batteries with high energy density, Electrochimica Acta, 2015, 166, 367-371.