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dc.creatorMinguzzi, Alessandroen_US
dc.creatorFan, Fu-Ren F.en_US
dc.creatorVertova, Albertoen_US
dc.creatorRondinini, Sandraen_US
dc.creatorBard, Allen J.en_US
dc.date.accessioned2016-09-23T18:05:15Z
dc.date.available2016-09-23T18:05:15Z
dc.date.issued2011-07en_US
dc.identifierdoi:10.15781/T24F1MK5N
dc.identifier.citationMinguzzi, Alessandro, Fu-Ren F. Fan, Alberto Vertova, Sandra Rondinini, and Allen J. Bard. "Dynamic potential–pH diagrams application to electrocatalysts for water oxidation." Chemical Science 3, no. 1 (Jul., 2012): 217-229.en_US
dc.identifier.issn2041-6520en_US
dc.identifier.urihttp://hdl.handle.net/2152/41047
dc.description.abstractThe construction and use of "dynamic potential-pH diagrams" (DPPDs), that are intended to extend the usefulness of thermodynamic Pourbaix diagrams to include kinetic considerations is described. As an example, DPPDs are presented for the comparison of electrocatalysts for water oxidation, i.e., the oxygen evolution reaction (OER), an important electrochemical reaction because of its key role in energy conversion devices and biological systems (water electrolyses, photoelectrochemical water splitting, plant photosynthesis). The criteria for obtaining kinetic data are discussed and a 3-D diagram, which shows the heterogeneous electron transfer kinetics of an electrochemical system as a function of pH and applied potential is presented. DPPDs are given for four catalysts: IrO(2), Co(3)O(4), Co(3)O(4) electrodeposited in a phosphate medium (Co-Pi) and Pt, allowing a direct comparison of the activity of different electrode materials over a broad range of experimental conditions (pH, potential, current density). In addition, the experimental setup and the factors affecting the accurate collection and presentation of data (e. g., reference electrode system, correction of ohmic drops, bubble formation) are discussed.en_US
dc.description.sponsorshipMinistry of Education, University and Research PRIN 2008PF9TWZ, 2008N7CYL5en_US
dc.description.sponsorshipUniversita degli Studi di Milanoen_US
dc.description.sponsorshipNational Science Foundation CHE-0808927en_US
dc.description.sponsorshipRobert A. Welch Foundation F-0021en_US
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectscanning electrochemical microscopyen_US
dc.subjectiridium oxide-filmsen_US
dc.subjectoxygenen_US
dc.subjectevolutionen_US
dc.subjectalkaline-solutionsen_US
dc.subjectsurface characterizationen_US
dc.subjectactive surfaceen_US
dc.subjectelectrodesen_US
dc.subjectelectrolysisen_US
dc.subjectprecursoren_US
dc.subjectplatinumen_US
dc.subjectchemistry, multidisciplinaryen_US
dc.titleDynamic Potential-Ph Diagrams Application to Electrocatalysts for Water Oxidationen_US
dc.typeArticleen_US
dc.description.departmentCenter for Electrochemistryen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1039/c1sc00516ben_US
dc.contributor.utaustinauthorBard, Allen J.en_US
dc.relation.ispartofserialChemical Scienceen_US


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