Market evolution: Metallates (CN 284190) — 2015–2025

Introduction

Customs code 284190 is a residual heading within the family of salts of oxometallic or peroxometallic acids (CN 2841). It covers zincates and vanadates (28419030), lithium nickel manganese cobalt oxides (28419040), and other remaining salts (28419070), excluding the more specific chromates, manganates, molybdates, and tungstates headings. While the heading encompasses a heterogeneous set of inorganic compounds, its evolution over the 2015–2025 period has been dominated by one sub-product: lithium nickel manganese cobalt oxide (NMC), the leading cathode active material for electric-vehicle batteries.

Over the decade examined, EU trade in CN 284190 underwent a structural transformation. Import values rose from €33.8 million to €1.34 billion (+3,858%), export values grew from €11.9 million to €127.1 million (+968%), and EU industrial production expanded more than sixfold in quantity. These figures place CN 284190 among the fastest-growing traded chemical categories in the EU, driven almost entirely by the rapid electrification of road transport and the parallel build-out of a European battery supply chain.

The following sections trace three interconnected dynamics: the explosion of imports from East Asia, the emergence of EU production capacity, and the growing strategic vulnerabilities created by concentrated supply relationships and volatile prices.

I. An Order-of-Magnitude Surge Fueled by the Battery Revolution

Import volumes and values grew at an extraordinary pace

Between 2015 and 2025, EU imports of CN 284190 grew from 4,987 tonnes (€33.8 million) to 66,768 tonnes (€1.34 billion). The peak year saw 95,408 tonnes imported at a total value of €4.22 billion. Both volume and value expanded by well over an order of magnitude — a growth trajectory that is rare in EU trade in basic chemicals.

The EU's trade deficit in this product widened from €21.9 million in 2015 to a peak of over €4 billion before retreating to €1.21 billion in 2025. Even at the 2025 level, the deficit remains nearly 55 times larger than at the start of the period.

South Korea, China, and Japan became overwhelmingly dominant suppliers

The geographic concentration of EU imports shifted decisively toward East Asia. In 2015, the top three East Asian suppliers (South Korea, China, Japan) accounted for approximately 47% of EU import value, with the United States also playing a significant role. By 2025, these three countries captured 97% of all EU imports.

South Korea's dominance is particularly striking: from a 22% share in 2015, it rose to 56% of EU import value in 2025, peaking at €2.69 billion. This reflects the position of Korean cathode material producers (such as LG Chem, Umicore's Korean operations, and EcoPro) as the primary suppliers to European battery cell plants. China's share grew from 12% to 24%, while Japan supplied 16%. The United States, once the largest single partner, became marginal — consistent with the shift of battery supply chains toward East Asia.

Import prices surged during the 2021–2022 commodity supercycle before correcting

The unit value of EU imports followed a dramatic arc: from €6,786 per tonne in 2015, prices climbed to a peak of €44,218 per tonne — more than six times the starting level — before falling back to €20,061 per tonne in 2025. Export prices, by contrast, declined from €10,179 to €8,330 per tonne (−18%), suggesting either a change in the EU's export product mix or intensifying price competition in export markets.

The import price spike largely reflects the 2021–2022 period, when lithium, nickel, and cobalt prices surged globally due to surging EV demand, post-COVID supply chain disruptions, and the European energy crisis. Price shock detection identified an abnormal price increase of +203% from Japan in 2021 and +249% from China in 2022, each representing a significant share of total import value. These events underscore the direct transmission of global critical-mineral price volatility into EU trade flows.

II. European Industrial Capacity Rises, Yet the Trade Deficit Persists

EU production expanded more than sixfold in quantity

Alongside the import surge, EU domestic production of CN 284190 underwent a massive expansion. Output grew from 20.3 million kg (2015) to 127.5 million kg (2025), with a peak of 153.0 million kg — a 528% increase in quantity and a 1,092% increase in production value (from €20.7 million to €246.4 million, peaking at €277.8 million).

This ramp-up corresponds to the wave of battery supply chain investments announced from 2017 onward, with cathode material plants being built across Europe to serve the emerging gigafactory ecosystem.

Poland and Hungary emerged as the EU's import hubs, while Belgium became a major exporter

The geographic pattern of EU member-state trade reveals a clear battery belt forming in Central and Northern Europe.

Top EU Member States — Imports (€M)

Poland absorbed the lion's share of import growth, rising from a negligible €0.5 million to €952.8 million — and peaking at nearly €3.45 billion. Hungary followed a similar trajectory. Both countries host major battery cell factories (LG Energy Solution and Samsung SDI, respectively) that require large volumes of cathode active material. Sweden's rise reflects Northvolt's operations. These three member states combined now account for the vast majority of EU extra-EU imports in this heading.

Top EU Member States — Exports (€M)

On the export side, Belgium's transformation is remarkable: from virtually zero in 2015 to €38.3 million in 2025, likely reflecting Umicore's cathode material production for export. Poland also became a significant exporter (€49.2 million), suggesting that some of the cathode material produced domestically is re-exported to non-EU markets. Germany, traditionally the EU's largest chemical exporter, saw its share in this heading decline.

Sweden, Poland, and Belgium displayed the strongest revealed comparative advantage

Specialisation analysis for 2025 confirms the concentration of competitive advantage in a handful of member states:

Sweden's RCA of 7.86 means its exports of CN 284190 are nearly eight times more concentrated than the EU average, reflecting the outsized role of the battery value chain in its trade profile. Poland and Belgium also show strong positive specialisation. At the other end of the spectrum, Ireland, Romania, Latvia, Slovenia, and Croatia display near-zero specialisation in this product, indicating that the battery supply chain remains geographically concentrated within the EU.

Export propensity collapsed as domestic consumption absorbed production

A striking structural shift is visible in the vulnerability indicators: EU export propensity (exports as a share of production) fell from 59.4% in 2015 to just 1.1% in 2025, and trade intensity declined from 66.2% to 1.8%. In 2015, the EU produced roughly 20,000 tonnes and exported a meaningful fraction; by 2025, production reached 127,500 tonnes, but nearly all of it was consumed within the EU — primarily by domestic battery cell manufacturers.

This collapse in export propensity does not reflect declining competitiveness. Rather, it signals that EU demand for cathode materials grew even faster than the impressive ramp-up in domestic supply. The EU's net import reliance shifted from −64.6% in 2015 to −0.5% in 2025, moving from a position of significant net-export surplus toward approximate trade balance — meaning that domestic production now nearly matches consumption, but with little margin to spare.

III. Supply Concentration and Price Shocks Expose Strategic Vulnerabilities

Import market concentration more than doubled, crossing into high-risk territory

The Herfindahl-Hirschman Index (HHI) for EU imports by value rose from 1,679 in 2015 to 4,100 in 2025 (+144%). An HHI above 2,500 is conventionally considered "highly concentrated," meaning that the EU import market for CN 284190 shifted from moderate to high concentration over the decade.

The import HHI peaked at 5,360 — a level that would raise antitrust concerns in a market context. This concentration reflects the dominance of three East Asian suppliers (Korea, China, Japan), which together accounted for 97% of EU import value in 2025. By contrast, the export HHI remained moderate and relatively stable (1,617 → 1,767), indicating that EU exports are directed to a more diversified set of destination markets.

East Asian suppliers exhibited the highest trade volatility

Volatility analysis reveals that the EU's most important suppliers also display the most erratic trade patterns. Coefficients of variation (CV) for import value from the top three partners are all above 1.0, indicating extreme year-to-year variability:

A CV above 1.0 means that the standard deviation of annual trade values exceeds the mean — a degree of variability that complicates procurement planning and capacity investment for downstream users. The combination of high concentration and high volatility is a textbook recipe for supply-chain fragility.

Specific price shocks from Japan and China amplified the 2021–2022 cost spike

Three discrete supply shocks were identified over the period:

The two import-side shocks are by far the most consequential for the EU economy. The Japanese price shock in 2021 (+203%) coincided with the global surge in lithium and nickel prices and affected 16% of EU import value. The Chinese shock in 2022 (+249%) occurred during the European energy crisis and hit 19.7% of imports. Together, these events explain much of the spike in the average import price to €44,218 per tonne.

The Turkish export-side shock in 2018, while notable in statistical terms, had a much smaller footprint (6.6% of export value) and likely reflected a compositional shift in EU exports to Türkiye rather than a fundamental supply disruption.

These shocks are not merely historical curiosities. With three-quarters of EU imports still concentrated among the same three East Asian partners, any future disruption — whether from geopolitical tensions, trade restrictions, or supply chain bottlenecks — could transmit rapidly into EU battery production costs.

Conclusion

The decade 2015–2025 saw CN 284190 transform from a niche category of inorganic chemicals into a strategically significant trade flow at the heart of Europe's energy transition. The central driver was the explosive growth in demand for cathode active materials — particularly NMC oxides — as European battery cell manufacturing scaled from pilot lines to gigafactory volumes.

Three main findings emerge from the data:

1. Demand-side transformation. EU imports grew by nearly 4,000% in value and over 1,200% in volume, driven almost entirely by the ramp-up of battery cell production in Poland, Hungary, and Sweden. South Korea became the dominant supplier, accounting for more than half of import value.

2. Supply-side catch-up. EU domestic production expanded more than sixfold in quantity, driven by major investments in cathode material plants. However, the growth in domestic supply has not been sufficient to close the trade gap: in 2025, the EU still imported over five times more (by quantity) than it exported, and the trade deficit stood at €1.21 billion — 55 times its 2015 level.

3. Structural vulnerability. The concentration of imports among three East Asian suppliers (HHI of 4,100), combined with extreme price volatility (CV > 1.0 for all three) and documented price shocks in 2021–2022, points to a significant strategic dependency. While the EU's net import reliance has moved toward balance in quantity terms, the concentration of supply sources and the price-setting power of East Asian producers remain unresolved risks for the European battery ecosystem.

The data suggest that while the EU has made substantial progress in building domestic production capacity for advanced metallates, it remains structurally dependent on a small number of foreign suppliers whose own output is subject to significant price and volume volatility. Diversifying this supply base — through additional domestic investment, new trade partnerships, or alternative chemistries — will be essential to reducing the EU's exposure to supply shocks in this critical product category.