10 minerals the world needs to secure its high-tech future

The world’s most advanced machines depend on materials most people rarely hear about. A pinch of gallium can affect a radar system, a tantalum capacitor can determine whether a satellite works reliably, and a shortage of copper can delay an entire data center. That is what makes the next technology race so unusual: countries may have the software, capital and engineering talent to build something, yet still lack the minerals needed to manufacture it. Here are 10 materials quietly shaping everything from electric cars and power grids to robots, weapons and space systems. Wikimedia Commons Copper is hardly exotic, but no other mineral on this list touches as many parts of the modern economy. Power lines, transformers, electric motors, charging stations, renewable-energy projects and data centers all need it. The International Energy Agency (IEA) expects copper demand to rise by about 7 million tonnes by 2040. Based on projects currently planned, the world could face a supply deficit of approximately 25% by 2035. The difficulty is not merely finding copper. New mines can take years to permit and build, while declining ore grades mean companies must process more rock to recover the same amount of metal. 2. Lithium: The mineral inside the battery boom Wikimedia Commons Lithium powers electric vehicles, smartphones, laptops, drones and grid-scale storage systems. The IEA expects demand for it to more than triple by 2040 under its stated-policy scenario. Australia is a major miner, while Chile, Argentina and China supply lithium chemicals and other processed materials. Sodium-ion and other battery chemistries could reduce pressure in some markets, but lithium remains deeply embedded in global battery manufacturing. 3. Graphite: The battery material hiding in plain sight Wikimedia Commons Lithium receives most of the attention, yet conventional lithium-ion batteries also depend on graphite. The material forms the anode, where lithium ions are stored while the battery charges. Several countries possess natural graphite deposits, but producing battery-grade material requires purification, shaping and coating. China dominates much of this processing, meaning another country’s mine cannot immediately replace disrupted Chinese supply. 4. Cobalt: High performance with a human cost Wikimedia Commons Cobalt improves the stability, energy density and lifespan of certain batteries. It is also used in jet-engine superalloys, cutting tools and components expected to survive extreme temperatures. Most mined cobalt comes from the Democratic Republic of the Congo, while China plays a large role in refining it. Reports of child labor, unsafe artisanal mines and pollution have made cobalt one of the technology industry’s most controversial materials. Battery makers are reducing cobalt use where possible, but aerospace and other demanding applications cannot always trade performance for lower cost. 5. Nickel: More range, more environmental pressure Wikimedia Commons Nickel helps some electric-vehicle batteries store more energy without becoming excessively heavy. It also remains essential for stainless steel, gas turbines, chemical equipment and aerospace superalloys. Indonesia has driven much of the recent growth in nickel production and processing. That expansion has brought concerns over deforestation, marine pollution, mining waste and the use of coal-powered processing facilities. 6. Rare earths: The magnets that make machines move Rare earths are a group of 17 elements, although only a handful are central to advanced machines. Neodymium, praseodymium, dysprosium and terbium help produce compact permanent magnets used in EV motors, wind turbines, robots, drones and missile-guidance systems. The real bottleneck comes after mining. Separating rare earths, turning them into metals and manufacturing high-performance magnets requires an industrial chain that China has spent decades building. The IEA estimates that China’s share of rare-earth refining fell from more than 90% in 2023 to 85% in 2025. That remains enough concentration for export restrictions to ripple through automotive, energy and defense industries. Wikimedia Commons Gallium helps create gallium nitride and gallium arsenide, semiconductor materials used in radar, satellites, 5G equipment, LEDs and efficient power electronics. These compounds can perform better than silicon in certain high-frequency and high-power applications. Gallium is usually recovered as a by-product while processing other metals, making supply difficult to expand quickly. A US Geological Survey analysis found that China accounted for as much as 98% of global gallium production in 2023. 8. Germanium: Helping machines communicate and see Wikimedia Commons Germanium supports fibre-optic networks, infrared cameras, night-vision equipment, satellite solar cells and thermal-imaging systems. Its value comes from serving civilian communications and military sensing at the same time. Like gallium, germanium is generally recovered as a by-product rather than extracted from dedicated mines. Disruption at a small number of processing facilities can therefore affect several industries at once. Wikimedia Commons Tungsten has the highest melting point of any metal and can retain strength under punishing conditions. It is used in cutting tools, drilling equipment, aerospace parts, furnaces and defense systems. Its importance extends beyond products containing tungsten. Factories rely on tungsten-carbide tools to cut and shape steel, titanium and other difficult materials, making it a quiet enabler of modern manufacturing. The IEA reported that tungsten prices increased sixfold during 2025 and early 2026 amid export controls and stronger demand. 10. Tantalum: Tiny components, serious consequences Wikimedia Commons Tantalum is best known for capacitors that store electrical charge inside remarkably small spaces. They appear in smartphones, servers, medical implants, cars, aircraft and military electronics. Its market is small, but that does not make it unimportant. A missing capacitor can hold up a sophisticated machine worth millions of dollars, while conflict and governance concerns complicate sourcing from parts of Central Africa. The technology race starts below ground The world is unlikely to run out of all 10 minerals at once, but that is not the danger governments are preparing for. The greater risk is losing access to one difficult-to-replace material and discovering that an entire factory, grid project or defense program cannot proceed without it. Owning a deposit will not be enough, because technological power comes from mining, refining and manufacturing working together. The countries that connect those stages – and recover more material through recycling – will have far greater control over what the world can build next. Get the latest in engineering, tech, space & science - delivered daily to your inbox.Atharva is a full-time content writer with a post-graduate degree in media & amp; entertainment and a graduate degree in electronics & telecommunications. He has written in the sports and technology domains respectively. In his leisure time, Atharva loves learning about digital marketing and watching soccer matches. His main goal behind joining Interesting Engineering is to learn more about how the recent technological advancements are helping human beings on both societal and individual levels in their daily lives.