Natural Graphite Anode Material

What It Is

Westwater produces Natural Graphite Anode Material engineered for lithium-ion batteries. Through advanced processing, natural flake graphite is converted into Coated Spherical Purified Graphite (CSPG), the active anode material used in battery cells.

CSPG enables the movement of lithium ions during charging and discharging, making it a foundational material in modern battery technology.

​ CSPG Specifications Overview
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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.

Westwater’s coated spherical purified graphite (CSPG) is engineered to meet strict material specifications, including >99.95% purity and controlled particle sizing, supporting consistent performance across applications such as electric vehicles, energy storage systems, and advanced electronics. The table to the left outlines minimum specification targets for Westwater’s CSPG products.

How It's Produced

Westwater’s processing platform converts natural flake graphite into CSPG through several advanced steps, including milling, spheroidization, purification, and coating.

This process transforms raw graphite into a high-performance material engineered for consistent quality and reliable battery operation.

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Scalable U.S. Production

Production is being developed at the Kellyton Graphite Plant in Alabama. The facility is designed to scale in phases, providing an initial production platform while supporting future expansion and integration with domestic graphite feedstock.

By producing anode material in the United States, Westwater is advancing a secure domestic supply of battery-grade graphite.