Netherlands-based VC Energy Transition Fund Rotterdam led the round.
Its an extension onCarbonXs10mn capital injection announced in February, capping off the funding round at a cosy 14mn.
Its found in batteries that power everything from EVs to smartphones.
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A resilient battery supply chain is crucial for global electrification, said CarbonXs co-founder Rutger van Raalten.
Yet, we dont see sufficient alternatives for locally sourcing critical raw materials such as graphite.
Similar to graphite, this hexagonal formation creates spaces where lithium ions can insert themselves during charging.
However, CarbonX says that its material has even more little crevices for the lithium ions to hide.
That equals faster charging and longer-lasting batteries.
CarbonXs feedstock technology purportedly consumes much less energy compared to synthetic or natural graphite production.
This equals lower costs and less carbon emissions, it said.
CarbonX is currently planning its first high-capacity facility at an existing carbon black factory in the Port of Rotterdam.
Story bySion Geschwindt
Sion is a freelance science and technology reporter, specialising in climate and energy.
