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Guide

Explore the Elements: Lithium

Explore the Elements: Lithium

Lithium is the lightest metal and the cornerstone of the battery revolution. As EV and energy-storage demand surges, this guide introduces lithium's geology, the very different brine and hard-rock production routes, supply dynamics, and the sustainability challenges they raise.

Lithium is the lightest metal and the cornerstone of the battery revolution. As EV and energy-storage demand surges, this guide introduces lithium's geology, the very different brine and hard-rock production routes, supply dynamics, and the sustainability challenges they raise.

Robert Pell

Robert Pell

IN SUMMARY

Understanding lithium, the cornerstone of the battery revolution

Understanding lithium, the cornerstone of the battery revolution

Lithium is the lightest metal and the lightest solid element, a soft, silvery-white alkali metal whose high electrochemical potential and thermal resistance make it indispensable to modern batteries. Found in continental brines, pegmatite rocks and certain minerals, it is central to electric vehicles, portable electronics and renewable energy storage. But the way lithium is produced varies enormously depending on the deposit, and so do its environmental impacts. This guide, part of Minviro's "Explore the Elements" series, introduces lithium's geology, the distinct production routes, supply dynamics and the sustainability challenges shaping the industry.

  • Lithium is defined by batteries. Its biggest use is in rechargeable lithium-ion batteries, prized for high energy density, light weight and long life, with further uses in heat-resistant glass and ceramics, lubricating greases and as a flux in metal production.

  • Source dictates everything. Brine, geothermal brine, sedimentary clay and hard-rock (pegmatite) deposits each form under different conditions and require different extraction methods, which means very different environmental footprints.

  • Sustainability centres on water and chemistry. Brine extraction in particular raises water use and contamination concerns, while processing is chemical-intensive, making efficient extraction, water management and recycling critical.

Why lithium is critical

Lithium (chemical symbol Li, atomic number 3) is the lightest metal and the lightest solid element, a soft, silvery-white alkali metal with a combination of high electrochemical potential and thermal resistance that makes it ideal for energy storage. Its most significant use by far is in rechargeable lithium-ion batteries, favoured for their high energy density, light weight and long lifespan, which is what makes them the technology of choice for electric vehicles, smartphones, laptops and grid storage. Lithium also goes into primary (non-rechargeable) batteries valued for reliable operation across a wide temperature range, and beyond batteries it is used in heat-resistant glass and ceramics, lubricating greases, and as a flux additive in iron, steel and aluminium production. This concentration of demand in batteries is why lithium sits at the centre of the energy transition.

Geology and the four production routes

Lithium forms through several geological processes, and each deposit type leads to a distinct extraction route. Brine deposits, concentrated in South America's Lithium Triangle, form as water evaporates in closed basins, leaving lithium-rich saline solutions that are extracted via solar evaporation ponds and then chemically treated to precipitate lithium carbonate. Geothermal brines, such as California's Salton Sea, leach lithium from hot subterranean rocks and allow lithium to be separated during geothermal energy extraction. Sedimentary clays, notably in Nevada, form from weathered lithium-bearing volcanic minerals and are processed by acid or alkaline leaching. Hard-rock (pegmatite) deposits, containing minerals like spodumene and lepidolite, are mined and physically processed into a concentrate, then converted to lithium compounds through roasting, leaching, purification and precipitation. Each route carries its own economic and environmental profile, which is exactly why the source of lithium matters so much to its footprint.

Demand, supply and sustainability

Lithium's central role in electrification and renewable energy has driven a surge in demand that is expected to continue as EV and energy-storage adoption accelerates. But the supply chain faces challenges: geographic concentration in a few countries, limited processing capacity, and environmental concerns, prompting global efforts to diversify sources, improve recycling and develop more sustainable extraction. On sustainability specifically, the environmental impacts of lithium mining, particularly from brine, include water use and potential contamination, ecosystem disruption, and the chemical-intensive nature of processing. Addressing these means more efficient extraction technologies, better water management, and recycling of lithium batteries, supported by evolving regulatory frameworks and standards that emphasise environmental protection and community engagement.

Lithium's central role in electrification and renewable energy has driven a surge in demand that is expected to continue as EV and energy-storage adoption accelerates. But the supply chain faces challenges: geographic concentration in a few countries, limited processing capacity, and environmental concerns, prompting global efforts to diversify sources, improve recycling and develop more sustainable extraction. On sustainability specifically, the environmental impacts of lithium mining, particularly from brine, include water use and potential contamination, ecosystem disruption, and the chemical-intensive nature of processing. Addressing these means more efficient extraction technologies, better water management, and recycling of lithium batteries, supported by evolving regulatory frameworks and standards that emphasise environmental protection and community engagement.

The role of LCA and harmonised standards

Because lithium's footprint varies so much by source and route, life cycle assessment is an indispensable tool for understanding the full picture, from extraction through processing to use in batteries and end-of-life recycling. LCA pinpoints environmental hotspots across the life cycle and helps the sector move toward more eco-conscious practice, which is why many leading lithium companies now proactively report their LCA results as a sign of transparency and environmental responsibility. Harmonised standards reinforce this: Product Carbon Footprint and LCA guidelines give a consistent way to measure and compare the impact of different production routes, and crucially they help align lithium production with downstream regulation such as the EU Battery Passport. By integrating these principles with regulatory requirements, the industry can strengthen its environmental stewardship while meeting the transparency demands now flowing up the battery supply chain.

Because lithium's footprint varies so much by source and route, life cycle assessment is an indispensable tool for understanding the full picture, from extraction through processing to use in batteries and end-of-life recycling. LCA pinpoints environmental hotspots across the life cycle and helps the sector move toward more eco-conscious practice, which is why many leading lithium companies now proactively report their LCA results as a sign of transparency and environmental responsibility. Harmonised standards reinforce this: Product Carbon Footprint and LCA guidelines give a consistent way to measure and compare the impact of different production routes, and crucially they help align lithium production with downstream regulation such as the EU Battery Passport. By integrating these principles with regulatory requirements, the industry can strengthen its environmental stewardship while meeting the transparency demands now flowing up the battery supply chain.

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Robert Pell

Robert Pell

Founder & CEO

Robert Pell is the Founder and CEO of Minviro. His doctoral research at the University of Exeter's Camborne School of Mines focused on responsible sourcing of rare earth elements, pioneering novel Life Cycle Assessment approaches and developing methodology for integrating LCA into mine planning. A published scientist and experienced speaker, Robert holds roles as Chair of the Rare Earth Industry Association (REIA) and the Critical Minerals Association (CMA).

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Robert Pell

Robert Pell

Founder & CEO

Robert Pell is the Founder and CEO of Minviro. His doctoral research at the University of Exeter's Camborne School of Mines focused on responsible sourcing of rare earth elements, pioneering novel Life Cycle Assessment approaches and developing methodology for integrating LCA into mine planning. A published scientist and experienced speaker, Robert holds roles as Chair of the Rare Earth Industry Association (REIA) and the Critical Minerals Association (CMA).

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