Explore the OCx25 dataset.
Compare catalyst composition, performance, and structure.
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About this dataset and its experimental methods
This dataset contains electrochemical performance data for metal alloy catalysts tested for CO₂ reduction and hydrogen evolution reactions. The samples were synthesized using two different methods:
- Chemical Reduction: Produces powder catalysts
- Spark Ablation: Produces porous film catalysts
All catalysts were applied to Gas Diffusion Electrodes (GDEs) and tested in Membrane Electrode Assemblies (MEAs) in neutral conditions using 0.1M KHCO₃ electrolyte. The electrochemical testing was performed in a two-electrode configuration with direct voltage measurement. Gas products were analyzed using Gas Chromatography (GC).
Each synthesis method includes three duplicate samples for statistical reliability. All samples contain X-ray Fluorescence (XRF) composition data, and most samples include X-ray Diffraction (XRD) structural characterization data.
Filtering tips and synthesis-method definitions
Tips: Reset clears all filters. Export downloads the current selection. Aggregate by either XRF or nominal composition—not both simultaneously. In the periodic table, left-click includes an element and right-click excludes it.
AggregationCombines replicate measurements into grouped means and standard deviations.
Composition toleranceMaximum composition difference allowed when grouping similar materials; 0.01 equals 1 atomic percent.
XRF compositionMeasured elemental composition from X-ray fluorescence.
Nominal compositionIntended target composition used during synthesis.
Matching rowsRecords remaining after the current filters and optional aggregation.
Materials synthesizedNormalized XRD records included with the dashboard.
Materials testedUnique sample IDs in the current selection.
Unique chemistriesDistinct measured or nominal compositions, selected with the XRF/Nominal toggle.
UofT / VSPChemical-reduction and spark-ablation synthesis methods, respectively.
Both / EitherRequire matching compositions across both methods, or include samples from either method.
FEFaradaic efficiency: the percentage of current producing a specific product.
Partial currentCurrent density attributed to a specific product using its Faradaic efficiency.
02
Aggregate replicatesCombine samples with matching compositions into a single data point.
at. fraction
01
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