The main indicators to measure the quality of spherical graphite
The first is physical performance indicators: including particle size (D50, μm), tap density (g / cm3), specific surface area (m2 / g), moisture (%), fixed carbon (%)
Second, the electrochemical performance indicators: Coulomb efficiency (%), charging capacity (mAh / g), cycle life (cycles)
Spherical graphite material has good electrical conductivity, high crystallinity, low cost, high theoretical lithium insertion capacity, low charge and discharge potential and flatness. It is an important part of lithium ion battery anode materials, and is a negative electrode for lithium ion battery production at home and abroad. Material replacement products. It has excellent conductivity and chemical stability, high charge and discharge capacity, long cycle life, and environmental protection.
Spherical graphite processing process. First, the graphite dry concentrate is coarsely crushed, trimmed, and magnetically separated in the spherical graphite workshop. The initial product is spherical graphite, and then it enters the purification workshop and is purified at high temperature to become spherical graphite (high purity).