Name: Electrocatalytic Site Activity Enhancement via Orbital Overlap in A2MnRuO7 (A = Dy3+, Ho3+, and Er3+) Pyrochlore Nanostructures

Description: Particle size distribution of pyrochlore nanostructures; high-resolution TEM images of Er2RuMnO7 nanoparticles; high-resolution TEM images of Ho2RuMnO7 and Dy2RuMnO7; Mn pre-edge XANES features of pyrochlores and references; Mn Kβ XES spectra of pyrochlores and references; linear combination fit of the Mn Kβ XES spectra of pyrochlores; k2 weighted χ data and k2 weighted Fourier transform EXAFS data of the Mn and Ru K-edge; Dy 4d, Ho 4d, Er 4d, Ru 3d/C1s, and O 1 s X-ray photoemission spectra; estimation of the Faradaic charges by integration of electrochemical responses; HO2– yields during the ORR for all pyrochlore catalysts and binary oxides; comparison of pyrochlores’ ORR electrochemical signals with a Vulcan electrode; Koutecky–Levich plots for the ORR at Vulcan supported pyrochlores; partial DOS calculated for the various pyrochlores employing DFT-U; linear sweep voltammetry for the OER at carbon-supported pyrochlores; density, mean particle diameters, and specific surface area of the pyrochlore nanoparticles; structural parameters obtained from refining Mn K and Ru K EXAFS data; analysis of the Ru 3p photoemission line for the A2RuMnO7 samples; surface A:Ru:Mn atomic ratios as obtained by XPS; faradic charge associated with the reduction of surface sites and number density of active sites (Γsites); kinetically limiting current at 0.80 V vs RHE normalized by the effective number of active sites at the surface, mass of oxide at the electrode and the area of oxide present at the electrode

DOI:

Location: https://pubs.acs.org/doi/suppl/10.1021/acsaem.0c02060/suppl_file/ae0c02060_si_001.pdf

Resository: https://pubs.acs.org

Start date: 2021-04-01 00:00:00 UTC

End date:

Related Article: Electrocatalytic Site Activity Enhancement via Orbital Overlap in A2MnRuO7 (A = Dy3+, Ho3+, and Er3+) Pyrochlore Nanostructures

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