Lanthanum Hydrogen Applications: Fuel Cells & Catalysts

Lanthanum hydrogen applications are emerging as a critical link in the clean energy supply chain, with the element playing a central role in fuel cell catalysts, nickel-metal hydride (NiMH) storage alloys, and steam reforming processes that underpin industrial hydrogen production. Cerium functions alongside lanthanum across most of these pathways, making both light rare earth elements (LREEs) structurally important to hydrogen’s commercial scaling.

Lanthanum Hydrogen Applications: Fuel Cells and NiMH Alloys

The most established lanthanum hydrogen application is in nickel-metal hydride batteries, where lanthanum-rich mischmetal (La, Ce, Pr, Nd in mixed oxide form) forms the negative electrode alloy. NiMH batteries retain significant market share in hybrid vehicles — Toyota’s Prius platform still uses NiMH — and in industrial backup power systems. A typical NiMH cell uses 20–40g of rare earth material per kWh of capacity, with lanthanum comprising 25–35% of that mix by weight.

In proton exchange membrane (PEM) fuel cells, lanthanum strontium manganite (LSM) is a primary cathode material in solid oxide fuel cell (SOFC) variants operating at 600–1,000°C. SOFC applications include stationary power generation, maritime propulsion, and distributed hydrogen infrastructure. Bloom Energy, Mitsubishi Power, and Ceres Power each operate commercial SOFC platforms that depend on lanthanum-based cathode formulations.

Cerium performs a parallel function as an oxygen storage component in three-way catalysts and as a promoter in hydrogen production via steam methane reforming (SMR). Cerium oxide (CeO₂) — ceria — moderates oxygen vacancy formation in catalyst beds, improving thermal stability and conversion efficiency. Industrial hydrogen producers including Air Products and Linde use ceria-promoted catalysts in SMR units that collectively account for roughly 95% of current global hydrogen output.

Hydrogen Storage Infrastructure: The Scale Context

The rare earth mineral inputs required for fuel cells and catalysts are modest per unit — but the infrastructure being developed to receive hydrogen at commercial scale signals the direction of demand. Samsung C&T’s 40,000 m³ liquid hydrogen storage tank design, covered in detail on Oil and Gas Storage News, illustrates the capital commitment now entering the hydrogen storage sector. Terminals of this size presuppose upstream supply chains — including the rare earth catalyst inputs at the production end — operating at equivalent scale.

Current global liquid hydrogen storage capacity is concentrated in the United States (NASA and industrial users) and Japan, where the HySTRA consortium has demonstrated export-scale liquefaction at the Kobe terminal. The IEA’s Global Hydrogen Review projects hydrogen demand reaching 150 Mt/year by 2030 under accelerated transition scenarios — a volume that would require substantial expansion of both SMR catalyst beds and electrolyser stacks, both of which consume lanthanum and cerium-based materials.

Cerium’s Role in Hydrogen Catalysis

Cerium’s hydrogen pathway runs through two distinct mechanisms. First, as a water-gas shift (WGS) catalyst promoter: ceria-supported catalysts facilitate the reaction CO + H₂O → CO₂ + H₂, which is the primary purification step in SMR hydrogen production. Second, as a component in photocatalytic water splitting research, where cerium-doped titania and cerium-based perovskites are studied for direct solar-to-hydrogen conversion — though no commercial deployment exists at scale as of 2026.

Both roles position cerium as a mineral with growing optionality in the hydrogen economy, alongside its dominant current use in automotive catalytic converters. For context on the full cerium application spectrum, see the Top 10 Cerium Uses breakdown.

Supply Chain Exposure

Lanthanum and cerium are the most abundant rare earth elements and among the least expensive — lanthanum carbonate trades at approximately $1.50–$2.00/kg FOB China, cerium oxide at $2.00–$3.00/kg. Neither faces the supply concentration risk of heavy rare earths like dysprosium or terbium. China produces approximately 85–90% of global separated rare earth output, meaning lanthanum and cerium supply is still China-dominant despite their relative abundance.

Western supply chain diversification efforts — covered in the rare earth applications in the energy transition analysis — have focused primarily on NdPr and heavy rare earths. Lanthanum and cerium separation capacity outside China remains limited, with Lynas Rare Earths’ Malaysia facility and Energy Fuels’ White Mesa Mill among the few Western-facing sources of separated light rare earth output. As hydrogen production scales, the adequacy of that non-Chinese capacity for catalyst-grade lanthanum and cerium will become a more active question.

For a broader view of China’s leverage across the rare earth supply chain relevant to energy transition minerals, see the China rare earth export controls guide.

This article is for informational purposes only and does not constitute investment advice. Prices are subject to change without notice.