There is no single risk winner. Rare earths are the most geopolitically and processing-concentrated; cobalt has the greatest single-country mining exposure; and lithium is most vulnerable to volume, project-timing, price-cycle and demand-growth shocks. The right answer depends on the stage of the chain—mine, chemical conversion, refining, component manufacturing or recycling.
That distinction matters for electric vehicles, batteries, motors, electronics and grid storage. A material can appear plentiful at the mine while a shortage develops in a highly concentrated refining or component-making step.
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The short answer: rank the risk by supply-chain stage
For geopolitical and processing risk, rare earths rank highest because China dominates the refining and magnet-material stages that turn mined ore into usable inputs. For upstream mining concentration, cobalt is the most exposed: the Democratic Republic of the Congo (DRC) was the leading cobalt producer in the 2023 distribution identified by UN DESA. For volume and delivery risk, lithium is the most exposed because demand has risen rapidly and new mines and conversion plants must be delivered on time.
These are different failure modes, not competing scores. A trade restriction can hit rare-earth users quickly even when ore remains in the ground. A labor, governance or logistics shock in the DRC can tighten cobalt supply. Lithium can experience a well-supplied period and still face a later shortfall if projects are delayed while electric-vehicle and storage demand accelerates.
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Stage-specific ranking
- Mining concentration: cobalt has the clearest single-country exposure, with the DRC leading 2023 production; rare-earth mining is spread mainly across China, Myanmar and Australia; lithium is distributed mainly across Australia, Chile and China.
- Refining and processing concentration: rare earths are the most concentrated. The International Energy Agency (IEA) projects that China could supply around 80% of battery-grade rare-earth elements by 2035.
- Geopolitical disruption: rare earths face the greatest direct exposure because export controls or trade disputes can affect refining and permanent-magnet materials. Cobalt also has a two-stage concentration problem—DRC mining and major Chinese refining.
- Supply-volume and project-timing risk: lithium ranks highest. The key question is whether mines, chemical-conversion plants and transport infrastructure can expand quickly enough for demand.
- Social and responsible-sourcing risk: cobalt’s DRC exposure makes labor, governance and local logistics especially material. Lithium and rare earths have their own environmental and community risks that vary by deposit and processing route.
Why concentration is the shared weakness
All three supply chains are vulnerable because production growth is clustered among a small number of countries. The IEA estimates that 70–75% of projected 2030 supply growth for refined lithium, cobalt and rare-earth elements will come from today’s top three producers (IEA, 2024). That means new capacity is not automatically diversification: a market can add tonnes while becoming more dependent on the same few jurisdictions.
Refining is even more concentrated than mining. The IEA reported an average top-three refining share of about 86% in 2024, up from about 82% in 2020 across the covered critical minerals (IEA, 2025). Processing therefore creates a chokepoint between a mine and a factory. If conversion, separation or refining stops, downstream manufacturers may be unable to use otherwise available ore.
China is the central midstream bottleneck in the outlook. By 2035, the IEA projects that China will supply over 60% of refined lithium and refined cobalt and around 80% of battery-grade rare-earth elements (IEA, 2025). Those are projections, not guarantees, but they show why country risk must be assessed separately at each stage.
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Side-by-side comparison
| Risk question | Rare earths | Lithium | Cobalt |
|---|---|---|---|
| Main mining geography | China, Myanmar and Australia are the main producers in the 2023 UN DESA distribution. | Production is distributed mainly across Australia, Chile and China in the 2023 UN DESA distribution. | The DRC is the leading producer in the 2023 UN DESA distribution, creating unusually strong single-country exposure. |
| Refining outlook | China is projected to supply around 80% of battery-grade rare-earth elements by 2035. | China is projected to supply over 60% of refined lithium by 2035. | China is projected to supply over 60% of refined cobalt by 2035. |
| Dominant risk type | Geopolitical, processing and magnet-material concentration. | Supply-volume, project-timing, price-cycle and demand-growth risk. | Mining concentration, governance, labor and logistics risk, combined with concentrated refining. |
| Demand and project challenge | Specialized separation and magnet-material capacity must expand without relying on one processing center. | Rapid demand growth requires mines and conversion plants to arrive on schedule; delays can create a deficit after a temporarily well-supplied period. | Battery demand and refining growth must be matched while operators manage a concentrated upstream base. |
| Substitution and recycling | Substitution is most difficult for specialized magnet applications; recycling and recovery can reduce primary demand but require collection and separation capacity. | Chemistry choices can reduce or avoid lithium intensity only in some applications; recycling becomes more valuable as the installed battery base grows. | Battery designs can reduce cobalt use, and recycling can recover cobalt from end-of-life cells, but those options do not remove near-term mine and refining exposure. |
| Geopolitical lever | Export controls, trade disputes or interruptions to Chinese separation and magnet-material capacity. | Trade restrictions, permitting delays, project finance and competition for conversion capacity. | Disruption in the DRC, transport interruptions, responsible-sourcing rules or restrictions affecting Chinese refining. |
Rare earths: the highest geopolitical and processing risk
Why the midstream matters more than the mine
“Rare earths” describes a group of 17 elements, and their risks are not identical. The most strategically sensitive segment for many technologies is the group used in high-performance permanent magnets. For those materials, the critical question is not simply how much ore is mined; it is whether the ore can be separated, refined into suitable oxides and metals, and converted into magnet material at scale.
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The 2023 production distribution identified by UN DESA places China, Myanmar and Australia among the principal mining countries. That is a more geographically varied mining base than cobalt’s DRC concentration. However, the IEA’s 2035 projection of around 80% Chinese supply of battery-grade rare-earth elements shows how a diversified mine supply can still feed a highly concentrated processing chain.
How a disruption propagates
- Export restriction or trade dispute: a government limits ore, oxide, metal or magnet exports, or imposes licensing and customs delays.
- Processor bottleneck: manufacturers outside the dominant processing center cannot replace separated material quickly because separation plants require specialized equipment, permits and qualified operators.
- Component interruption: motor, generator and other magnet-dependent factories reduce output even if their own inventories contain other materials.
- Redesign pressure: engineers investigate alternative motor architectures or lower-performance materials, often adding qualification time, cost and efficiency trade-offs.
This chain explains why rare-earth risk can appear suddenly. A small volume of material may be essential to a high-value component, so a short interruption in separation or magnet production can matter more than the tonnage suggests.
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Substitution is application-specific. Some products can use a different motor design or a lower rare-earth loading; others depend on the performance, size or temperature characteristics of specialized magnet materials. A substitute is therefore not a universal remedy: it may require a new design, qualification testing and a different manufacturing line.
Recycling can reduce primary demand by recovering rare-earth content from end-of-life magnets and equipment, but collection, disassembly and separation capacity must exist first. Recycling is a resilience measure, not an immediate replacement for mined and refined supply.
Environmental exposure is concentrated in processing as well as mining. Separation and refining can involve significant chemical handling, waste management and energy use, with impacts varying by facility and ore type. Community opposition, permitting delays or an accident at a processing plant can therefore become supply events.
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Cobalt: the strongest single-country mining exposure
Why the DRC changes the risk profile
UN DESA’s 2023 distribution identifies the DRC as the leading cobalt producer. That makes cobalt unusually sensitive to events in one mining jurisdiction: local conflict, labor disruption, governance changes, transport failures, power shortages or a policy decision can affect a large share of primary supply.
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Responsible sourcing is part of the supply risk, not a separate public-relations issue. Buyers may suspend material, require additional audits or change suppliers when labor and governance conditions cannot be verified. Those actions can reduce effective availability even if the mine is still operating.
The two-stage concentration problem
Cobalt does not end its concentration story at the mine. China is projected to supply over 60% of refined cobalt by 2035. A battery manufacturer can therefore face both an upstream DRC shock and a midstream Chinese refining shock. The two risks are distinct: one affects ore and concentrate availability; the other affects the chemical products that cell makers can actually purchase.
Transport is another vulnerability. Cobalt concentrates and refined products cross borders before reaching cathode and cell plants. Port congestion, sanctions, trade restrictions or a failure on a key route can delay material without any change in mine output.
Can manufacturers reduce cobalt dependence?
Battery chemistries and cathode formulations can reduce cobalt intensity or avoid cobalt in some applications. That is a meaningful long-term hedge, but chemistry changes require qualification, safety validation, manufacturing adjustments and customer acceptance. Existing factories and vehicle platforms cannot all switch instantly.
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Recycling is strategically useful because cobalt has value and can be recovered from end-of-life batteries and manufacturing scrap. Its contribution grows as more batteries retire, so recycling does not eliminate the need for primary supply during periods when the installed battery base is still expanding.
ESG and climate considerations
Cobalt’s most acute ESG exposure is social and governance-related because of its DRC concentration. Companies need traceability to the mine or approved supplier, credible labor controls and contingency plans for logistics and policy changes. Climate exposure also matters: extreme rainfall, flooding, heat and power interruptions can affect mines, roads and processing plants, although the effect depends on location and facility design.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Lithium: the highest volume and project-delivery risk
Why a well-supplied market can still be fragile
Lithium production is distributed mainly across Australia, Chile and China in the 2023 UN DESA distribution, so its mining base is not as dependent on one country as cobalt. The main risk is whether supply can grow fast enough, in the right chemical form and at the right time.
The IEA’s 2023 assessment describes lithium demand as having grown rapidly. That growth creates a project-timing problem: a mine, brine operation, hard-rock concentrator or chemical-conversion plant can be delayed by permitting, financing, construction, technical performance, water access, community objections or grid connections. A delay of one project matters more when many planned projects are concentrated in the same small group of producers.
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Lithium ore or brine is not the finished input for a battery. It must be converted into a battery-grade chemical, and China is projected to supply over 60% of refined lithium by 2035. New mining capacity therefore does not guarantee new battery-ready supply if conversion plants, reagents, skilled labor or transport are constrained.
This distinction also explains price cycles. Periods of oversupply can push prices down and make marginal projects harder to finance. Later, when demand rises or a project slips, the market can tighten quickly because the delayed capacity cannot be created on short notice.
Demand shocks and technology shifts
Electric vehicles and stationary storage can increase lithium demand faster than producers planned. A sudden acceleration in orders affects mines, chemical plants, cathode makers, cell factories and shipping at different times. Conversely, slower EV sales or a change in battery chemistry can reduce near-term demand and leave new projects underused. These swings create investment risk even when the long-run direction remains upward.
Substitution, recycling and environmental exposure
Some battery chemistries use less lithium per unit of energy, and some storage technologies use different materials. None removes lithium from every application. Recycling can eventually provide a growing secondary source, but the quantity available depends on how many batteries reach end of life and how efficiently collection and recovery systems operate.
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Which supply chain is most vulnerable to each disruption?
| Disruption | Most exposed stage | Why the effect differs by mineral | Useful resilience response |
|---|---|---|---|
| Extreme weather | Mine, road, port, power supply and chemical plant | Cobalt is exposed through concentrated DRC mining and logistics; lithium projects can lose planned volume; rare-earth processors can be affected even when mines remain open. | Map alternate routes, hold appropriate safety stock and qualify suppliers in different climate zones. |
| Technical failure | Separation, conversion, refining or magnet production | Rare earths are especially sensitive to specialized separation and magnet capacity; lithium and cobalt can lose battery-grade output if a conversion or refinery unit stops. | Identify single points of failure, maintain spare equipment and qualify more than one processing route. |
| Export restriction | Cross-border trade in ore, chemicals, metals or components | Rare-earth restrictions can affect magnets quickly; cobalt can be hit at both DRC and Chinese stages; lithium restrictions can block conversion products even when ore is available. | Track licensing rules, diversify jurisdictions and pre-approve compliant substitute materials. |
| Trade dispute or sanctions | Refining, component manufacturing and shipping | Concentrated Chinese refining makes all three vulnerable to a midstream dispute, with rare-earth magnet materials carrying particularly high component sensitivity. | Separate legal, logistics and technical alternatives rather than relying on one substitute supplier. |
| Permitting delay | New mine, brine operation, refinery or conversion plant | Lithium’s expansion depends heavily on projects arriving on time; rare-earth and cobalt projects can also be delayed by environmental, social or governance requirements. | Use a project pipeline with schedule probabilities, milestone checks and contingency volume. |
| Community conflict | Mine, water system, road or processing site | Lithium projects can face water and land-use disputes; cobalt projects face heightened labor and governance scrutiny; rare-earth processing can face chemical and waste concerns. | Require transparent consultation, traceability and independently verifiable operating standards. |
| Sudden EV or storage demand growth | Mine-to-refinery expansion and battery manufacturing | Lithium faces the clearest volume and timing squeeze; cobalt demand can rise with battery output; rare-earth demand can jump when motor and generator production expands. | Use demand scenarios, offtake options, redesign plans and recycling programs before a shortage appears. |
How to assess a company’s exposure
A procurement team should not ask only, “How many tonnes do we buy?” It should identify the exact form, location and processing step that the product needs.
- Map the bill of materials. Record whether the requirement is mined ore, concentrate, carbonate, hydroxide, oxide, metal, alloy, magnet or battery-grade chemical.
- Separate mine and refinery country. A supplier may source ore from one country and convert it in another. Record both, plus the location of component manufacturing.
- Measure concentration at the supplier level. Count qualified suppliers, not merely contracts. Two vendors that rely on the same refinery are one effective source.
- Test substitution realistically. Document the alternative chemistry, motor design or material, then include qualification time, performance loss, tooling and certification in the contingency plan.
- Set scenario triggers. Monitor export licenses, sanctions, weather alerts, labor disputes, project milestones, inventories and price moves. Define who can activate alternate sourcing.
- Build recycling and recovery into design. Label materials, preserve disassembly information and contract for recovery of manufacturing scrap and end-of-life components.
- Review ESG evidence as a supply requirement. Traceability, labor controls, community agreements, water management and waste handling protect continuity as well as reputation.
What the 2030–2035 outlook means
The IEA’s figures point to a common direction: more supply is expected, but most growth remains concentrated. If 70–75% of projected 2030 refined supply growth comes from today’s top three producers, the world may add capacity without removing concentration risk. The projected 86% average top-three refining share in 2024—up from 82% in 2020—shows why midstream diversification is urgent.
By 2035, China’s projected share—over 60% of refined lithium and cobalt and around 80% of battery-grade rare-earth elements—makes processing policy as important as mine ownership. New mines outside China can improve resilience only if independent conversion, refining and component capacity is built as well.
For technology planners, the practical conclusion is to use three separate playbooks: protect against geopolitical and processing shocks in rare earths; protect against upstream, social and responsible-sourcing shocks in cobalt; and protect against project delays and demand surges in lithium. A single “critical mineral risk” score hides these differences and can lead to the wrong investment.
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