New U.S. method creates graphite from coal waste

January 17, 2026

Scientists in the United States have successfully developed a breakthrough method for producing high-purity graphite from coal waste, offering a cleaner, faster, and more cost-effective alternative to traditional manufacturing techniques. Researchers at the National Energy Technology Laboratory (NETL) discovered a low-temperature graphite synthesis process that significantly reduces energy use while transforming coal-based materials into a valuable critical mineral.

The innovative approach relies on earth-abundant catalyst materials, including iron, to create highly crystalline graphite with minimal processing intensity. What sets this method apart is its flexibility: a wide range of carbon-rich feedstocks can be used, such as coal of varying grades, coal waste, coal char, biochar, petroleum coke, and even plastic waste.

According to the project’s lead scientist, the ability to manufacture graphite at lower temperatures could pave the way for a new domestic graphite supply chain. This advancement has the potential to strengthen U.S. manufacturing capabilities while reducing dependence on foreign sources of this strategically important material.

Faster, lower-cost graphite production

Compared with conventional graphite production methods, the NETL catalytic process delivers dramatic efficiency gains. Traditional techniques require temperatures approaching 3,000°C and processing times that can stretch into several weeks. In contrast, the new method operates at under 1,500°C and completes production in just a few hours, cutting both energy consumption and operational costs.

Another key advantage is catalyst sustainability. The research team demonstrated that the catalyst can be recovered, recycled, and reused indefinitely, further improving the economic viability of the process. Performance testing also showed that graphite produced using this method matches commercial graphite when used in applications such as battery anodes.

Graphite’s strategic importance as a critical mineral

Graphite is officially classified as a critical mineral in the United States due to its essential role in manufacturing and the vulnerabilities associated with its global supply chain. Its unique physical and chemical properties make it indispensable for industries including lithium-ion batteries, steelmaking, nuclear energy, and advanced electronics.

Currently, global graphite production is heavily concentrated overseas. About one-third of the world’s supply comes from natural graphite, while the remaining two-thirds is synthetic graphite. China dominates both segments, producing roughly 70% of natural graphite and 60% of synthetic graphite worldwide. The U.S. has not mined natural graphite since 1990, increasing the urgency for domestic alternatives.

A new future for american graphite manufacturing

The low-temperature synthesis of graphite from coal and coal byproducts represents a major opportunity for the United States. By leveraging existing coal resources and waste materials, this technology could support a cost-effective, energy-efficient, and fully domestic graphite manufacturing base, strengthening economic resilience and securing supply for critical energy and industrial applications.