Young investigator research group on electrocatalysis at HZB
Dr. Michelle Browne (here at her graduation ceremony in Dublin) starts now a Young Investigator Group at HZB. © privat
Dr. Michelle Browne establishes her own young investigator group at the HZB . Starting in August, the group is co-funded by the Helmholtz Association for the next five years. The electrochemist from Ireland concentrates on electrolytically active novel material systems and wants to develop next-generation electrocatalysts, for example hydrogen production. At HZB she will find the perfect environment to conduct her research.
Michelle Browne received her PhD in 2016 from the University of Dublin, Trinity College Dublin (TCD), Ireland. She held research fellow positions at universities in Belfast, Prague, and Dublin. She has received prestigious fellowships and awards, for example the Marie Skłodowska-Curie Individual Fellowship, L’Oreal UNESCO Rising Talent UK & Ireland Fellowship and the Clara Immerwahr Award.
Her research focuses on the synthesis of novel catalytically active materials such as transition metal oxides and MXenes. She aims to characterise and optimise these material systems in order to develop next-generation electrolyzer materials that can also be upscaled for industrial use, in order to produce green hydrogen.
Electrocatalysis: Synthesis to Devices
Michelle Browne's research project fits perfectly with the research projects already underway at the Institute for Solar Fuels and within CatLab. "At HZB, I have a wide variety of investigation methods at my disposal, from scanning electron microscopy to the various instruments at BESSY II, which also allow operando analyses," she says.
Michelle Browne's affiliation with the Technische Universität Berlin in the Institute of Chemistry is planned. Starting in the fall, Browne will recruit postdocs and PhD students to join her team.
- Nanosilver as an electrocatalyst for CO₂ reductionVia electrolysis, CO2 can be reduced to CO, a raw material for further chemical products such as fuels. Within the GreenQuest Project, an internation team led by HZB chemist Prashanth Menezes has now systematically investigated catalyst layers made of silver nanoparticles, varying both the size of the particles and their density. The best yield was achieved with nanoparticles with diameters of around 10 nm, which were loosely distributed. Furthermore, they demonstrated how the economic efficiency of the electrochemical cell can be enhanced by integrating an additional chemical reaction at the anode, enabling the simultaneous production of a valuable formic acid, hydrogen, and CO in one device.
- Marcel Risch has been appointed Professor at the Freie Universität BerlinMarcel Risch was appointed to a W2-S professorship in the Department of Physics at Freie Universität Berlin in August 2026. His research group has been transformed into the department 'Mechanisms of Sustainable Electrocatalysis'. Risch investigates the fundamental mechanisms of electrocatalytic reactions and, on this basis, develops knowledge- and data-driven strategies to improve electrocatalysts for the sustainable production of hydrogen, fuels and chemicals.
- Thin nickel films boost green hydrogen productionUltra-thin nickel oxide coatings can significantly improve the performance of anion exchange membrane (AEM) water electrolysers, a promising technology for producing green hydrogen. This was demonstrated by a team led by HZB scientist Dr. Michelle Browne. The results show that a nickel oxide film only 10 nanometres thick outperformed conventional nickel oxide powder electrodes while using less than 1% of the catalyst material. The study is published in the Journal of Materials Chemistry A,