Publication date: 15th December 2025
In search of replacement of state-of-the-art noble-metal-based electrocatalysts, it’s an emerging topic to understand the stability of noble-metal-free electrocatalysts under operation conditions. This talk shares the perspective on respective cathodic and anodic reactions for fuel cells and electrolyzers.
For proton-/anion- exchange membrane fuel cells (PEMFCs or AEMFCs), atomically dispersed Fe-N-C catalysts are the most promising alternatives to Pt-based catalysts in cathodic oxygen reduction reaction (ORR). With regard to the durability of Fe–N–C catalysts in this environment, many questions, such as carbon corrosion, the role of reactive oxygen species, agglomeration of active single Fe atoms, and Fe leaching, remain unanswered. Here a holistic view towards aforementioned issue will be addressed with a demonstration recent experimental insights obtained using gas diffusion electrode (GDE) half-cell setups coupled with inductively coupled plasma mass spectrometry (ICP-MS).[1- 3]
The other focus of intrinsic stability of catalysts is the paired anodic reaction in electrolyzers. We draw the attention into dissolution of Co before and under acidic or near-neutral oxygen evolution reaction (OER) from Co-based oxide, an emerging class of non-noble alternative to Ir-based catalysts for water or CO2 electrolysis, which also directly links to its long-term catalytic activity. [4-5] Beyond water oxidation, alcohol-group-enriched biomass derivative reforming, especially glycerol oxidation reaction (GOR), paves another avenue for versatile hydrogen evolution and CO2 reduction with largely decreased overall cell voltage. Here we also introduced the intrinsic stability of noble-metal-free catalysts under reaction conditions and perspectives on the complex possible mechanisms towards alcohol-group oxidation in alkaline environment.
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International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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