VHD Technology
What is VHD Technology?
Shaping the future of Heat Management
VHD Technology represents cutting-edge innovation – a near-term, advanced technology which produces commercial very high density (VHD) graphite blocks with industry-leading material properties, some of which have never been achieved before in commercial mass market graphite production.
Green Critical Minerals is the only listed company globally with the rights to produce VHD Graphite Blocks.
Next-Generation Innovation
Combining high density, high thermal diffusivity, a high degree of anisotropy and high thermal conductivity enables VHD Graphite Blocks to deliver rapid heat movement and efficient dissipation, making it an excellent heat management technology. VHD Graphite Blocks can provide system-level impact and reduce overheating risks in AI processors, data centre servers, semiconductors, and advanced electronics.
What makes VHD Technology different?
Efficient Production
Production of blocks is significantly faster and more cost-effective than competitors, with VHD Graphite Blocks being produced in 24-36 hours (up to 12 weeks in competitors) and at a lower graphitisation temperature of 1500C (up to 2900C in competitors).
Versatile and Customisable
Smaller VHD Graphite Blocks can be produced for thermal management and high tech applications (data centres, AI processes, supercomputing, telecommunications, semiconductors, aerospace, defense) while larger Blocks can be produced for industrial applications (thermal energy storage, heating elements, EDM, crucibles, glass manufacturing, continuous casting).
Directional Heat Management
Lowest electrical resistivity along the grain ever measured (1.2 µΩ·m) in a bulk graphite product, allowing VHD Technology to provide precise, directional heat dissipation.
Exceptional Properties
Among the highest thermal diffusivity ever recorded (288mm2/s) for any bulk material, and among the highest thermal conductivity ever recorded (617 W/m.k) for any bulk material1.
Applications in Rapid Growth Markets
High-Performance Electronics
VHD Technology Graphite material offers superior heat transfer properties and precise heat dispersion, making it ideal for modern thermal management needs in high-performance computing, AI, data centres and battery management systems.
Thermal Energy Storage
Large VHD Graphite Blocks optimised for high-energy retention can be used to provide consistent energy availability, revolutionising energy storage for a renewable future.
Nuclear
VHD Graphite Blocks have the potential to advance thermal management innovations for the nuclear industry in enhancing reactor efficiency, improving safety through superior heat dissipation, and enabling the development of next-generation high-temperature reactors.
Defence and Aerospace
VHD Graphite’s superior properties and advanced manufacturing enable the production of high-performance components critical to the defence and aerospace sectors, enhancing precision engineering, durability, and reliability in mission-critical systems.
Rapid Pathway to Commercialisation
VHD Technology is the future of graphite and heat management technology – with applications in rapidly growing, critical technology areas and properties exceeding industry benchmarks, GCM is set to disrupt the market. VHD Technology is set to not only replace existing materials technologies, but significantly outperform them – offering a lighter, more efficient and cost-effective alternative.
GCM acquired VHD Technology in October 2024 and has already made rapid progress, targeting initial product commercialisation of VHD Graphite Blocks by the end of 2025.
Acquisition and Development
GCM acquired 100% rights to VHD Technology in October 2024. The technology was invented by world renowned leading Materials and Engineering Scientist Professor Charles Sorrell and team from the University of New South Wales, Australia.
- See Announcements (30 October 2024, 17 February 2025)