Jef Caers: How better mineral exploration makes better batteries

Episode Summary

Executive Summary: This episode examines how the clean-energy transition is driving urgent demand for battery metals like cobalt, nickel, and lithium. Jeff Cares argues that supply is constrained, geopolitically concentrated, and often environmentally and socially harmful, especially in the Congo. He explains how AI, geophysics, and academia-industry collaboration can speed discovery, while recycling and better processing could make battery materials part of a more sustainable closed loop.

Main Topics: Battery metals and the clean-energy transition (Priority: 5/5): The episode frames cobalt, nickel, and lithium as essential inputs for batteries needed to store intermittent renewable energy and electrify transportation. Cobalt supply concentration and ethical risk (Priority: 5/5): Cares emphasizes that cobalt production is heavily concentrated in the Democratic Republic of Congo, where mining conditions can involve child labor, poor regulation, and environmental harm. Geology, deposits, and why discovery is hard (Priority: 4/5): The discussion explains that battery metals occur in specific geological deposits and that easy-to-find deposits are largely already discovered, making subsurface exploration necessary. AI and data-driven mineral exploration (Priority: 5/5): Cares describes using machine learning, geophysics, and sequential decision-making to reduce false positives and improve the efficiency of exploration at continental scale. Energy independence and domestic supply chains (Priority: 4/5): The conversation highlights U.S. dependence on foreign sources and the need for domestic exploration, processing infrastructure, and better data to support energy security. Recycling and the closed-loop economy (Priority: 4/5): The interview argues that battery metals can be recovered from end-of-life batteries, creating a more sustainable circular supply chain over time.

Key Arguments: The clean-energy transition requires moving from a fuel-based economy to one built on solid materials, especially battery metals. Cobalt is a critical material for battery safety and energy density, particularly in electric vehicles, even if small consumer devices can tolerate less optimized chemistries. The biggest supply risk is not just total geological abundance but where the metals are concentrated geographically and politically. Mineral exploration is currently too slow and expert-driven; AI can improve discovery by reducing false positives and optimizing where to collect new data. Industry and academia need to work together: academia develops methods, while companies scale them and fund drilling. Domestic energy independence requires not just mining but also processing capacity and infrastructure. Battery metals can support a recycling economy with high recovery potential, reducing dependence on new extraction over time.

Data Points: Cobalt reserves in the Democratic Republic of Congo: about 60% of the world reserves - Cares said cobalt is heavily concentrated in the Congo, creating supply and ethical risks. Cobalt production from the Congo: much of the world production - He described the Congo as the dominant source of current cobalt output. Cobalt needed to convert all cars to EVs: about 6.5 million metric tons - Cares gave a rough calculation for turning about 1.5 billion cars into Teslas. Current global cobalt production: about 150,000 metric tons - He contrasted present production with future demand. Cobalt currently discovered: about the same amount as needed for the car transition - He suggested discovered resources are large enough in theory, but not yet produced. Cobalt in a Tesla: about 4.5 kilograms - He estimated cobalt content per EV battery system. U.S. car fleet: about 300 million cars - Used to estimate U.S. cobalt needs for electrification. U.S. cobalt production: 500 metric tons - He contrasted domestic production with the scale needed for EV transition. U.S. known cobalt reserves: 38,000 metric tons - He said current known U.S. reserves are far below future needs. Battery metal recovery from end-of-life batteries: about 90% - He said recycling could enable a closed-loop economy for battery metals. Major cobalt deposits discovered historically: about 200+ deposits - He noted the field has already found most easy deposits. Deposits found in the last 10 years: about 15 - He cited the slowing pace of discovery. Deposits found in the last year: only 1 - He used this to illustrate how difficult new exploration has become. Time horizon for climate tipping points: next two decades - He argued urgency is immediate, not long-term. Alternative battery technologies: at least 10 years away - He said other chemistries are not yet ready at global manufacturing scale.

Pivotal Quotes: "we are creating a new resources curse" — Jeff Cares: He warned that cobalt concentration in one country could repeat the geopolitical and social problems seen with oil. "we need to go from basically burning liquids to moving to an economy that's based on solids or materials" — Jeff Cares: He summarized the sustainability shift from fossil fuels to material-based energy systems. "Nature is laughing at us right now and saying, I'm holding my secrets" — Jeff Cares: He described the challenge of discovering hidden mineral deposits under cover using AI and geophysics.

Implications: The episode suggests the energy transition depends as much on mining, data, and processing as on battery innovation. Listeners should expect more focus on ethical sourcing, domestic supply chains, AI-guided exploration, and recycling as strategic priorities.