Scientists in Russia Discover a Gentle Method for Purifying Graphite for the Technologies of Tomorrow
A new purification method developed by researchers at Perm National Research Polytechnic University achieves 99.98% graphite purity while preserving its layered structure, opening the door to large‑scale production of thermally expanded graphite essential for aviation, energy, and next‑generation electronics
Ultralight and Heat‑Resistant
Thermally expanded graphite is a supermaterial that combines extraordinary lightness, heat resistance, and exceptional sorption capacity—the ability to absorb various substances from the environment. It is essential for creating heat‑resistant seals in aircraft engines, efficient systems for removing heavy metals and cleaning oil spills, as well as flexible smartphones and high‑capacity batteries. However, existing industrial purification methods often damage the material’s structure using aggressive reagents and high temperatures, stripping the graphite of its core advantages.
The university’s press service told IT‑Russia that researchers analyzed several traditional methods and identified their limitations: some were too complex to scale, others damaged the graphite, and still others proved unstable.
Ammonium Bifluoride for a Supermaterial
A key breakthrough came from the use of ammonium bifluoride.
Based on computer modeling of chemical processes, specialists determined optimal parameters for preparing raw material to produce thermally expanded graphite.
A Technological Leap
The development carries strategic importance for Russia. The new technology enables the creation of a full production cycle—from preparing Russian raw materials to manufacturing the final product—ensuring industrial independence in a critical field.
In the long term, this innovation could drive breakthroughs not only in aviation and energy but also in next‑generation filtration systems and flexible electronic devices.
