{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,14]],"date-time":"2025-10-14T11:27:32Z","timestamp":1760441252990,"version":"3.41.2"},"reference-count":35,"publisher":"ASME International","issue":"2","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2015,4,1]]},"abstract":"<jats:p>Selenium modified ruthenium electrocatalysts supported on carbon black were synthesized using NaBH4 reduction of the metal precursor. Prepared Ru\/C electrocatalysts showed high dispersion and very small averaged particle size. These Ru\/C electrocatalysts were subsequently modified with Se following two procedures: (a) preformed Ru\/carbon catalyst was mixed with SeO2 in xylene and reduced in H2 and (b) Ru metal precursor was mixed with SeO2 followed by reduction with NaBH4. The XRD patterns indicate that a pyrite-type structure was obtained at higher annealing temperatures, regardless of the Ru:Se molar ratio used in the preparation step. A pyrite-type structure also emerged in samples that were not calcined; however, in this case, the pyrite-type structure was only prominent for samples with higher Ru:Se ratios. The characterization of the RuSe\/C electrocatalysts suggested that the Se in noncalcined samples was present mainly as an amorphous skin. Preliminary study of activity toward oxygen reduction reaction (ORR) using electrocatalysts with a Ru:Se ratio of 1:0.7 indicated that annealing after modification with Se had a detrimental effect on their activity. This result could be related to the increased particle size of crystalline RuSe2 in heat-treated samples. Higher activity of not annealed RuSe\/C catalysts could also be a result of the structure containing amorphous Se skin on the Ru crystal. The electrode obtained using not calcined RuSe showed a very promising performance with a slightly lower activity and higher overpotential in comparison with a commercial Pt\/C electrode. Single wall carbon nanohorns (SWNH) were considered for application as ORR electrocatalysts' supports. The characterization of SWNH was carried out regarding their tolerance toward strong catalyzed corrosion conditions. Tests indicated that SWNH have a three times higher electrochemical surface area (ESA) loss than carbon black or Pt commercial electrodes.<\/jats:p>","DOI":"10.1115\/1.4029422","type":"journal-article","created":{"date-parts":[[2014,12,22]],"date-time":"2014-12-22T14:30:30Z","timestamp":1419258630000},"update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":5,"title":["RuSe Electrocatalysts and Single Wall Carbon Nanohorns Supports for the Oxygen Reduction Reaction"],"prefix":"10.1115","volume":"12","author":[{"given":"Katarzyna","family":"Morawa Eblagon","sequence":"first","affiliation":[{"name":"LEPABE, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, Porto 4200-465, Portugal;"},{"name":"LCM, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, Porto 4200-465, Portugal"}]},{"given":"L\u00facia","family":"Brand\u00e3o","sequence":"additional","affiliation":[{"name":"LEPABE, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, Porto 4200-465, Portugal;"},{"name":"BioMark\/CINTESIS\u2013ISEP, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 431, Porto 4200-072, Portugal e-mail:"}]}],"member":"33","reference":[{"issue":"1","key":"2019111211554736200_B1","doi-asserted-by":"crossref","first-page":"154","DOI":"10.1016\/j.jpowsour.2005.09.039","article-title":"Durability Investigation of Carbon Nanotube as Catalyst Support for Proton Exchange Membrane Fuel Cell","volume":"158","year":"2006","journal-title":"J. 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