Lim, Hyun Woo Lee, Tae Kyung Park, Subin Pratama, Dwi Sakti Aldianto Yan, Bingyi Yoo, Sung Jong Lee, Chan Woo Kim, Jin Young 2025-03-22T14:30:14Z 2025-03-22T14:30:14Z 2025-03-19 2025-03 1754-5692 https://pubs.kist.re.kr/handle/201004/152021 Anion-exchange-membrane water electrolysis (AEMWE) is an emerging technology for hydrogen production. While nanoparticles are used as catalysts to enhance catalytic activity, they face durability challenges due to high surface energy and reactivity. Here we present a core-shell nanocluster catalyst featuring a Ru metal core encapsulated in a porous/reduced titania monolayer, incorporating Mo atoms. This core-shell structure not only protects the unstable metal core but also lowers the energy barriers for water dissociation. The synergistic interface formed by the titania heterostructure and Mo doping modulates the electron density distribution of ruthenium active sites, fine-tuning the d-band electronic structure and optimizing the intermediate binding strengths. As a result, exceptionally low overpotentials of just 2 mV at 10 mA cm-2 and 120 mV at 500 mA cm-2 could be achieved. In a practical AEMWE system, the core-shell catalyst shows an outstanding current density of 3.35 A cm-2 under a cell voltage of 2.0 V at 60 degrees C, preserving its activity over 530 h of long-term electrolysis at 0.5 A cm-2. English Royal Society of Chemistry A ruthenium-titania core-shell nanocluster catalyst for efficient and durable alkaline hydrogen evolution Article 10.1039/d4ee04867a 1 Energy & Environmental Science, v.18, no.5, pp.2243 - 2253 Energy & Environmental Science 18 5 2243 2253 Y scie scopus 001406785200001 2-s2.0-85216228408 Chemistry, Multidisciplinary Energy & Fuels Engineering, Chemical Environmental Sciences Chemistry Energy & Fuels Engineering Environmental Sciences & Ecology Article ELECTROCATALYSTS