Jiahao Yu
@iciq.org
Institute of Chemical Research of Catalonia
Institute of Chemical Research of Catalonia
EDUCATION
2018/10-2023/03 Barcelona Institute of Science and Technology Institute of Chemical Research of Catalonia
Doctoral degree in Chemical Science and Technology
Supervisor: José Ramón Galán-Mascarós (jrgalan@
Thesis: Water Splitting Electrocatalysts in Acidic Media: in the Search of Non-noble Metal Alternatives
2022/07-2022/10 Leiden University Leiden Institute of Chemistry
Exchange doctoral student in Electrochemistry
Supervisor: Marc Koper (m.koper@
Project: Ion Effects towards O2 Gas Bubble Detachment on Pt Microelectrode
2015/09-2018/07 Wuhan University School of Chemistry and Molecular Sciences
Master’s degree in Inorganic Chemistry
Supervisor: Wei Luo (wluo@
Thesis: Nickel-iron Based Nanocatalysts for Electrochemical Oxygen Evolution Reaction in Alkaline Media
RESEARCH INTERESTS
1. Local environment (pH, hydrophilicity/hydrophobicity) and external field (magnet, sun) effects on water splitting electrocatalysis
2. Design and fabrication of efficient electrocatalysts towards oxygen evolution reaction under alkaline and acidic media
3. Zero-gap water electrolysis cell design
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Olivier Oms, Nishith Maity, Jérôme Marrot, Jiahao Yu, Eric Rivière, William Shepard, Youven Benseghir, Khadija Talbi, Anne Dolbecq, Minh-Huong Ha-Thi,et al.
American Chemical Society (ACS)
Merging the rich chemistry of Ce(IV) polyoxometalates (POMs) with that of 3d polyanions remains a challenge due to the strong competition between these highly oxophilic lanthanide cations and 3d metallic ions for coordination to lacunary molecular metal oxides. We report herein the characterization of an unprecedented water stable hexameric CeIV/CoII POM (Ce12Co6) made of two {(SiW9)2Ce6} units connected to a {(SiW10)2Co6(PO4)2} core. In addition, the pentameric CeIV/NiII compound Ce6Ni8, where two {PW9Ni3W} and a {PW10Ni2} fragments are grafted on a {(PW9)2Ce6} moiety, has been obtained. Magnetic studies of Ce6Ni8 revealed ferromagnetic interactions between the NiII centers constituting the {Ni3PW10} fragments, in agreement with the geometry of such a trinuclear cluster. Related insoluble barium salts of Ce12Co6 and Ce6Ni8 were also prepared, allowing their solid-state electrochemical investigations and showing in particular that in Ce12Co6, both the cobalt, cerium, and silicotungstate moieties are electroactive. Finally, photophysical studies demonstrate the formation of long-lived reduced POMs photosensitized by [Ru(bpy)3]2+, suggesting that Ce12Co6 and Ce6Ni8 could be used as efficient reservoirs of reduction equivalents for photocatalytic reactions.
Jiahao Yu, Felipe A. Garcés-Pineda, Jesús González-Cobos, Marina Peña-Díaz, Celia Rogero, Sixto Giménez, Maria Chiara Spadaro, Jordi Arbiol, Sara Barja, and José Ramón Galán-Mascarós
Springer Science and Business Media LLC
Jiahao Yu, Felipe A. Garcés-Pineda, Jesús González-Cobos, Marina Peña-Díaz, Celia Rogero, Sixto Giménez, Maria Chiara Spadaro, Jordi Arbiol, Sara Barja, and José Ramón Galán-Mascarós
Springer Science and Business Media LLC
AbstractEarth-abundant electrocatalysts for the oxygen evolution reaction (OER) able to work in acidic working conditions are elusive. While many first-row transition metal oxides are competitive in alkaline media, most of them just dissolve or become inactive at high proton concentrations where hydrogen evolution is preferred. Only noble-metal catalysts, such as IrO2, are fast and stable enough in acidic media. Herein, we report the excellent activity and long-term stability of Co3O4-based anodes in 1 M H2SO4 (pH 0.1) when processed in a partially hydrophobic carbon-based protecting matrix. These Co3O4@C composites reliably drive O2 evolution a 10 mA cm–2 current density for >40 h without appearance of performance fatigue, successfully passing benchmarking protocols without incorporating noble metals. Our strategy opens an alternative venue towards fast, energy efficient acid-media water oxidation electrodes.