Why It Matters
The performance of a lithium-ion battery is closely tied to the characteristics of its anode material. Parameters such as particle size distribution, purity, tap density, and reversible capacity influence energy density, charging efficiency, and cycle life.
Natural graphite anode material offers several important performance advantages. It has a high theoretical capacity, favorable energy-density characteristics, and is widely used in lithium-ion battery anodes because of its ability to reversibly store and release lithium ions during charging and discharging. When processed into CSPG, natural graphite can be engineered to meet the consistency, purity, and performance requirements needed for advanced battery applications.
Westwater’s coated spherical purified graphite, or CSPG, is engineered to meet strict material specifications, including greater than 99.95% purity and controlled particle sizing. These qualities are designed by battery scientists to support a broad range of applications such as electric vehicles, battery energy storage systems, defense-related battery applications, and advanced electronics.
The benefits of natural graphite vs. other materials extend beyond performance. Natural graphite offers a more cost- and CO₂-efficient material pathway compared with synthetic graphite, which requires significantly more electricity to produce and is historically more expensive. Some industry estimates indicate synthetic graphite can require approximately four times the electricity to manufacture compared with natural graphite-based anode material. For this reason, natural graphite is the leading choice as an anode material in lithium-ion batteries.