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Highly efficient electrocatalysts for oxygen reduction reaction: Nitrogen-doped PtNiMo ternary alloys

dc.creatorLuo L., Abbo H.S., Titinchi S.J.J., Tsiakaras P., Yin S.en
dc.date.accessioned2023-01-31T08:55:31Z
dc.date.available2023-01-31T08:55:31Z
dc.date.issued2019
dc.identifier10.1016/j.ijhydene.2019.01.185
dc.identifier.issn03603199
dc.identifier.urihttp://hdl.handle.net/11615/76026
dc.description.abstractThe relatively low efficiency of the reaction of oxygen reduction (ORR) remains among the main obstacles for hydrogen fed proton exchange membrane fuel cells (H-PEMFCs) commercialization. In the present work, PtNiMo ternary alloy catalysts are obtained through reducing by NaBH4 and subsequent thermal annealing in NH3 at 1.0 atm. The as prepared catalysts are physico-chemically (XRD, TEM and XPS) characterized, exhibiting alloy nanostructure. From the electrochemical tests it is found that they exhibit high ORR activity in aqueous solutions saturated with O2 and acidified with HClO4. From the as synthesized catalysts, Pt3Ni3MoN/C shows the highest mass activity (539.41 mA mg−1 Pt); 3.5 times greater than that observed over commercial Pt/C (154.46 mA mg−1 Pt). Moreover, they show very good stability, while their ORR activity is only slightly altered after 5,000 cycles. These highly performing and low cost catalysts could thus open up new possibilities for the commercialization of hydrogen fed PEMFCs. © 2019 Hydrogen Energy Publications LLCen
dc.language.isoenen
dc.sourceInternational Journal of Hydrogen Energyen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85061425862&doi=10.1016%2fj.ijhydene.2019.01.185&partnerID=40&md5=812cbd2bd817d0b4be98bf288f2655b5
dc.subjectAmmoniaen
dc.subjectCostsen
dc.subjectDoping (additives)en
dc.subjectElectrocatalystsen
dc.subjectElectrolytic reductionen
dc.subjectHydrogenen
dc.subjectHydrogen fuelsen
dc.subjectOxygenen
dc.subjectOxygen reduction reactionen
dc.subjectPlatinum alloysen
dc.subjectSodium alloysen
dc.subjectSodium Borohydrideen
dc.subjectTernary alloysen
dc.subjectAlloy catalysten
dc.subjectElectrochemical testen
dc.subjectLow cost catalystsen
dc.subjectNitrogen-dopeden
dc.subjectNitrogen-dopingen
dc.subjectOrr activitiesen
dc.subjectOxygen Reductionen
dc.subjectThermal-annealingen
dc.subjectProton exchange membrane fuel cells (PEMFC)en
dc.subjectElsevier Ltden
dc.titleHighly efficient electrocatalysts for oxygen reduction reaction: Nitrogen-doped PtNiMo ternary alloysen
dc.typejournalArticleen


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