What is spherical carbon?
It is made with high-quality, high-carbon flake natural graphite. A modern processing technique is then used to alter the graphite’s surface and produce products in different shapes and fineness.
Application of Spherical Graphite
Spherical Graphite Material has high electrical conductivity and crystallinity. It is also low-cost, with a theoretically high lithium insertion capability, low charge potential, and a flat surface. It is a key component of lithium-ion cell negative electrode materials and is used in the production of lithium-ion batteries both domestically and internationally. Material replacement products. It has high charging and discharging capacity, environmental protection, and excellent chemical conductivity.
Preparation of Spherical Graphite
After high-temperature separation, the spherical Graphite is produced by crushing, trimming, and magnetically separating the graphite in the spherical Graphite Workshop.
Use of spherical carbon graphite for the battery industry
As the world moves towards a clean energy-based economy, encompassing electric vehicles for motor vehicles, heavy and passenger transport, and home energy storage systems, the demand for cost effective energy storage solutions is driving the growth of graphite flakes.
The lithium-ion battery (LiB) is not able to function properly without this ingredient. Anodes of LiBs are made of spherical Graphite.
Spherical Graphite is historically derived using synthetic graphite. It’s a much more expensive option compared to natural flake.
A mechanical attrition is usually used to form flake graphite in a rounded and spherical shape. Spherical Graphite is packaged more efficiently in a LiB’s anode due to its rounded shape. This allows the LiB to have a higher energy capacity and longer recharge time.
LiB needs different Spherical Graphite Particle Sizes as Spherical Graphite Particle Size impacts on performance targets. i.e. In a LiB which has a higher charging rate, a Spherical Graphite with a d50 value of 10 microns is used, whereas a LiB having a high power requirement would require a larger Spherical Graphite with a d50 value of 20 microns.
After purification, the spheroid is cleaned to remove any unwanted elements, such as SiO2, Fe or S. There are several purification methods. Among them are aggressive acid cleaning with hydrofluoric and thermal cleansing using high-temperature ovens. Both methods have their own advantages and drawbacks.
Purified after purification
Coating is done to increase the surface area and improve the surface area of the particles. Many LiB producers used their proprietary technology to coat the particles.
The Spherical Graphite, which has been purified and coated, is then shaped into the anode needed for LiB Batteries.
Spherical Graphite (SGP) has proven itself to be a good material for Lithium-Ion Battery Applications.
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