Electrocatalytic Performance of Bimetallic Nanoparticles in Fuel Cells

The pursuit of efficient, durable and cost‐effective electrocatalysts has driven extensive research into bimetallic nanoparticles for fuel‐cell applications. By combining two metals at the nanoscale, these catalysts exploit synergistic interactions between different atomic species to enhance reaction kinetics for both the hydrogen oxidation reaction at the anode and the oxygen reduction reaction at the cathode. Controlled architectures—such as alloyed solid solutions, intermetallic phases and core–shell morphologies—allow fine tuning of electronic structure, surface strain and adsorption energies, thereby reducing overpotentials and increasing specific and mass activities. The incorporation of a secondary metal often improves resistance to poisoning by reaction intermediates (for example carbon monoxide and small organic molecules), while also lowering the total noble‐metal loading. Carbon‐based supports, including graphene derivatives and carbon nanotubes, provide high surface area, electrical conductivity and corrosion resistance, further enhancing catalyst stability under realistic operating conditions. Advances in wet‐chemical synthesis, galvanic replacement and pulsed‐laser ablation enable precise control over particle size, composition and surface facets. As demand for zero‐emission power sources grows, bimetallic nanoparticle electrocatalysts offer a promising route to scalable, high‐performance fuel cells for automotive, stationary and portable energy applications.

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Electrocatalytic Performance of Bimetallic Nanoparticles in Fuel Cells publication trend

The graph below shows the total number of articles in electrocatalytic performance of bimetallic nanoparticles in fuel cells across all publications each year (not limited to Nature Index journals).

Technical terms

Electrocatalysis: Acceleration of electrochemical reactions at electrode surfaces by specialised catalysts.

Bimetallic nanoparticle: A nanoscale particle composed of two different metal elements, designed to exploit synergistic properties.

Core–shell structure: A nanoparticle architecture in which one metal forms a core and another forms a surrounding shell, tuning surface chemistry.

Alloy: A homogeneous mixture of two or more metals at the atomic level, often enhancing electronic and catalytic properties.

Electrochemical surface area (ECSA): The effective surface area of a catalyst accessible to reactants during electrochemical operation.

Poisoning resistance: The ability of a catalyst to maintain activity despite adsorption of inhibiting species such as carbon monoxide.

References

1. Synergistic effect of bimetallic Pd–Pt nanocrystals for highly efficient methanol oxidation electrocatalysts. RSC Advances (2023).
2. Rapid synthesis of trimetallic alloy PtPdNi nanosponges: structural, morphology and catalytic performance. Digest Journal of Nanomaterials and Biostructures (2023).
3. Impact of Pt-Ni Nanoparticle Architecture on Electrocatalytic Oxidation Reaction in Fuel Cells. Catalysis Research (2023).