Mobility and Poisoning of Mass-Selected Platinum Nanoclusters during the Oxygen Reduction Reaction

Abstract

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Array Microcell Method (AMCM) for Serial Electroanalysis

“…The trend towards more complex faceting as E Ox and/or E Red were increased was consistent with work from the Sun Group . Also of note, Pt electrodepositions via AMCM are different than bulk electrodepositions because of faster mass transport with AMCM, as seen with ultramicroelectrodes and SECCM . Consequently, AMCM has the advantages of reduced electrode fabrication/preparation time and faster depositions, which drastically increases throughput of parameter vetting.…”

Nanoscale Electrochemical Mapping

“…182,193 Finally, in SMCM (and SECCM) there is no need to fully immerse the substrate during measurement (as in macroscopic voltammetry or SECM), opening up the possibility of using materials that are usually difficult to encapsulate as an electrode, including layered or two-dimensional materials [193][194][195] and TEM grids. 196 Should materials be sensitive to the ambient environment, then environmental control, [197][198][199] and/or in situ electrochemical cleaning of the sample during the scanning process, can be implemented. 197 Building on from the SMCM technique, dual-channeled theta pipet probes that are able to provide positional feedback independent of the current flowing at the substrate (working electrode) surface (as in SMCM) were later developed and the term SECCM was coined.…”

A Universal Nano‐capillary Based Method of Catalyst Immobilization for Liquid‐Cell Transmission Electron Microscopy

“…SECCM has previously been used to study nanoparticles contained in a capillary via detection of impacts and landing events [16] or particles that were already immobilized on a surface. [17] Potential-controlled deposition from a capillary has also been reported. [18][19][20][21] The capillary approaches the chip surface in air, and the approach is automatically stopped when the droplet at the end of the capillary makes contact with the surface using a fast-feedback recording of either the current flowing between the surface and the electrode inserted from the back into the capillary or using vibration of the SECCM theta capillary and measuring the current or current magnitude between the two capillaries across the droplet.…”