In a transformative leap for sustainable energy technology, a research coalition spearheaded by Professor Jungwon Park at Seoul National University’s Department of Chemical and Biological Engineering, in partnership with leading experts from Stanford University and SLAC National Accelerator Laboratory, has unveiled a groundbreaking platinum cluster catalyst that could revolutionize hydrogen production. This novel catalyst design not only maximizes hydrogen yield but simultaneously minimizes platinum usage, overcoming several longstanding barriers in scalable, cost-effective hydrogen generation. The insights, recently published in the prestigious journal Science, exemplify the power of atomically precise engineering in catalysis and unlock new pathways for clean energy applications worldwide.
Hydrogen, widely championed as a cornerstone of future carbon-neutral energy systems, demands innovative storage and transport solutions to facilitate its direct use across industries. Conventional approaches—such as high-pressure hydrogen gas cylinders or liquefaction—pose significant safety risks and economic drawbacks. Liquid Organic Hydrogen Carriers (LOHCs) emerge as compelling alternatives, enabling hydrogen to be chemically bonded and transported in liquid form with ease comparable to traditional fuels. However, the industry’s Achilles heel remains the dehydrogenation step, which necessitates highly efficient and durable catalysts to liberate hydrogen at the point of demand, efficiently and economically.
Addressing this critical challenge, the research collective developed a ligand-free platinum cluster catalyst engineered with exquisite control over atomic composition and cluster size. Employing a sophisticated air calcination technique, the team immobilized platinum atoms directly onto alumina supports, prompting self-assembly into ultrasmall, amorphous clusters roughly 1 nanometer in size—structures optimized for superior catalytic function. Rapidly achieving uniform cluster formation was essential, as previous catalyst systems either exhibited poor metal utilization efficiency (in the case of nanoparticles) or suffered from inadequate stability (typical of single-atom catalysts).
Advanced electron microscopy investigations revealed a surprising revelation: clusters of similar physical dimensions could consist of varying atom counts—ranging between 13 and 31 platinum atoms per cluster. This atomic variability alters catalytic behavior significantly, indicating that not just cluster size but precise atomic composition dictates activity and durability. Such nuanced understanding enables precise tailoring of catalysts, enhancing reactivity while extending operational lifespans under demanding reaction conditions.
The catalyst’s performance metrics are unprecedented. When deployed for the dehydrogenation of methylcyclohexane, an exemplar LOHC, the catalyst delivers an extraordinary hydrogen production rate of approximately 50,285 mmol per minute per gram of platinum. This translates to roughly 160 hydrogen molecules generated every second per platinum atom—a world-leading efficiency that outperforms conventional commercial catalysts by an order of magnitude, despite using ten times less platinum. This breakthrough not only advances catalytic science but also signals significant economic advantages by dramatically reducing reliance on scarce and costly noble metals.
Complementing experimental findings, comprehensive ab initio computational modeling provided atomic-scale insights into the dynamic behaviors underpinning enhanced catalytic activity and stability. These simulations track atomistic interactions and molecular transitions, offering predictive power to rationalize how the exact number of atoms within a cluster governs reaction kinetics and catalyst robustness. This synergy between theory and experiment exemplifies modern catalyst design paradigms, where precision at the atomic level translates into macroscopic technological gains.
Crucially, the team demonstrated the catalyst’s scalable synthesis, producing uniform platinum clusters at tens-of-gram quantities through a singular laboratory procedure with no theoretical upper scaling limit. This capacity addresses a common bottleneck in nanoparticle and cluster catalyst commercialization, where gram-scale production often limits industrial transition. The method’s adaptability across metal-support combinations beyond the platinum/alumina system further broadens its applicability, opening pathways for diverse catalytic processes demanding minimized precious metal content.
By circumventing the formation of platinum aggregates and inactive single atoms, the innovative air calcination and hydrogen reduction approach yields highly dispersed and strongly anchored cluster catalysts. This design enhances durability under cyclic reaction conditions typical of LOHC dehydrogenation, where catalyst degradation hampers long-term operational viability. In effect, the catalyst exemplifies an ideal balance of activity, selectivity, and lifetime—parameters critical for industrial hydrogen infrastructure.
Prof. Jungwon Park articulates the broader impact of these findings: “This study exemplifies a strategic innovation that transcends conventional catalyst limitations, enabling uniform cluster catalysts with outstanding hydrogen production activity and stability, utilizing near-minimal platinum loadings.” He emphasizes the foundational role of atomic-level structural control, which paves the way for scalable, high-efficiency hydrogen production catalysts essential for advancing LOHC technologies globally.
Moving forward, first author Dr. Chyan Kyung Song continues to refine cluster synthesis and characterization techniques, aiming to extend atomically precise catalysts toward other challenging reactions, including diverse hydrogen generation pathways. Co-first author Dr. Junhyeok Jung, with roots at SNU and now contributing pioneering work at Samsung Electronics, symbolizes the fruitful intersection of academia and industry necessary for technological maturation.
This research effort received support from South Korea’s National Research Foundation’s Top-Tier Research Institution Collaboration Platform and H2 NEXT ROUND Program, underscoring national investment priorities in future energy solutions. With a scalable, cost-effective, and high-performance catalyst platform now realized, the prospect of clean hydrogen supply chains anchored on LOHC systems grows markedly brighter. The technology’s implications ripple through energy economics, environmental sustainability, and industrial practice, signaling a new era in the pursuit of carbon-neutral societies.
Seoul National University’s College of Engineering, a revered leader in scientific innovation with over 70 years of history, continues to drive frontiers in industrial and environmental technologies. Home to over 300 internationally acclaimed faculty members, the college’s commitment to excellence is reflected in pioneering contributions such as this atomically controlled platinum cluster catalyst—a beacon of next-generation clean energy materials science.
Subject of Research: Not applicable
Article Title: Dependence of catalytic properties of strongly supported platinum clusters with atom counts
News Publication Date: 28-May-2026
Web References: DOI: 10.1126/science.aeb3087
Image Credits: © Science, originally published in Science
Keywords
Hydrogen production, platinum cluster catalyst, atomic-level control, liquid organic hydrogen carriers (LOHCs), catalyst stability, catalyst scalability, catalytic activity, air calcination, nanoclusters, sustainable energy, carbon neutrality, noble metal minimization
Tags: atomically precise catalyst engineeringcarbon-neutral hydrogen fuel systemsclean energy hydrogen storage solutionscost-effective hydrogen catalystshydrogen production catalystliquid organic hydrogen carriers dehydrogenationplatinum cluster catalyst designscalable hydrogen production methodsSeoul National University hydrogen researchSLAC National Accelerator Laboratory catalysisStanford hydrogen energy collaborationsustainable hydrogen generation technology
