Tagged: critical-minerals
8 results
6K
6K is a North Andover, Massachusetts advanced materials company that uses its proprietary UniMelt microwave plasma technology - which reaches roughly 6,000 degrees, hence the name - to produce battery cathode materials and additive-manufacturing metal powders faster, cleaner, and with fewer processing steps than conventional methods. Spun out of research at MIT and the University of Connecticut, the company operates through two divisions, 6K Energy (battery cathode active materials) and 6K Additive (sustainably sourced metal powders), and is building a domestic U.S. supply chain for critical materials backed by federal grants and more than $348 million in venture funding.
Duranium
Duranium is a Y Combinator (S25) advanced-materials company reshoring U.S. production of critical metals - titanium, magnesium, aluminum, zirconium and hafnium. It modernizes carbochlorination metallurgy with a novel reactor that recirculates CO and chlorine streams back into feedstock and spins off a saleable co-product (bleaching agents/hypochlorite), aiming to match Chinese-level pricing without subsidies while eliminating direct emissions. Founded in 2025 by CEO Brenden Prins-McKinney and CTO Berkley Noble, the company targets a pilot facility by June 2026 and roughly 12% of the U.S. magnesium market by 2029.
Electroflow Technologies
Electroflow Technologies is a San Bruno, California startup building an electrochemical direct lithium extraction (DLE) process that turns low-grade, dilute North American brines into battery-grade lithium and lithium iron phosphate (LFP) powder. By collapsing a conventional 10-step brine-to-LFP process down to three steps and using lithium-selective electrodes, the company aims to produce LFP cathode material domestically at under $2,500 per metric ton - roughly 40% below current Chinese producers - while using minimal water, chemicals, and electricity.
Magrathea
Magrathea is an Oakland, California clean-tech company rebuilding American magnesium production. Using a next-generation electrolytic process, it makes magnesium metal from seawater and brines with near-zero carbon emissions, aiming to break the West's dependence on Chinese supply for a metal critical to aerospace, automotive, and defense.
Terra AI
Terra AI is a Palo Alto geoscience company building generative AI that turns the messy, expensive guesswork of subsurface exploration into fast, probabilistic 3D models of what lies underground. By fusing geophysics, geochemistry, and drilling data, its platform generates millions of geological scenarios in minutes, helping mining and energy teams decide where to drill, how many wells they need, and whether a project is worth the capital - shrinking exploration timelines and pointing capital at the critical minerals the clean-energy transition depends on.
Mariana Minerals
Mariana Minerals is a software-first, vertically integrated critical minerals company building MarianaOS, an AI platform that turns mineral discovery, extraction and refining into a live, data-driven operation. The company is restarting and building lithium, copper and nickel projects across the U.S., starting with Copper One in Utah - billed as the world's first autonomy-first copper mine.
Kurt House
Kurt Zenz House is the Co-Founder and CEO of KoBold Metals, an AI-driven mineral exploration company backed by Bill Gates, Jeff Bezos, and Andreessen Horowitz. A Harvard-trained earth scientist and serial energy entrepreneur, he built KoBold from the ground up to solve one of the most consequential problems of the energy transition: finding enough copper, cobalt, lithium, and nickel to power a decarbonized world. Under his leadership, the company discovered the Mingomba deposit in Zambia - potentially the most significant copper find in a century - and raised over $1 billion to develop it. Before KoBold, he founded C12 Energy (CO2-based enhanced oil recovery) and Phase Change Resources (natural gas asset acquisition), and held research and teaching roles at MIT and Stanford.
John Mern
John Mern is the Co-Founder and CEO of Terra AI, a Khosla Ventures-backed startup using generative AI and probabilistic modeling to transform how humans find and develop critical minerals and energy resources underground. A Stanford PhD in aerospace engineering and alumnus of Boeing Phantom Works and KoBold Metals, Mern built Terra AI's platform to cut mine development timelines in half - running geophysical simulations 125,000x faster than traditional methods, achieving 40% reductions in drilling costs, and helping partners unlock over $100 million in investments. His work sits at the intersection of deep reinforcement learning, geoscience, and the urgent global race to secure the copper, lithium, and cobalt the energy transition demands.