dc.contributor.author | Sravani, Bathinapatla | |
dc.contributor.author | Veeramanoharareddy, Yenugu | |
dc.contributor.author | Park, Jong Pil | |
dc.contributor.author | Venu, Manthrapudi | |
dc.contributor.author | Sarma, Loka Subramanyam | |
dc.date.accessioned | 2023-02-13T13:09:22Z | |
dc.date.available | 2023-02-13T13:09:22Z | |
dc.date.created | 2023-01-05T12:53:44Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Catalysts. 2022, 12 (12), . | en_US |
dc.identifier.issn | 2073-4344 | |
dc.identifier.uri | https://hdl.handle.net/11250/3050423 | |
dc.description.abstract | Oxygen reduction reaction (ORR) is a very important reaction that occurs at the cathodic side in proton exchange membrane fuel cells (PEMFCs). The high cost associated with frequently used Pt-based electrocatalysts for ORR limits the commercialization of PEMFCs. Through bifunctional and electronic effects, theoretical calculations have proved that alloying Pt with a suitable transition metal is likely to improve ORR mass activity when compared to Pt-alone systems. Herein, we demonstrate the preparation of bimetallic Pt–Fe nanoparticles supported on reduced graphene oxide sheets (RGOs) via a simple surfactant-free chemical reduction method. The present method produces PtFe/RGO catalyst particles with a 3.2 nm diameter without agglomeration. PtFe/RGO showed a noticeable positive half-wave potential (0.503 V vs. Ag/AgCl) compared with a commercial Pt/C catalyst (0.352 V vs. Ag/AgCl) with minimal Pt-loading on a glassy carbon electrode. Further, PtFe/RGO showed a higher ORR mass activity of 4.85 mA/cm2-geo compared to the commercial Pt/C (3.60 mA/cm2-geo). This work paves the way for designing noble−transition metal alloy electrocatalysts on RGO supports as high-performance electrocatalysts for ORR application. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | MDPI | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Design of Bimetallic PtFe-Based Reduced Graphene Oxide as Efficient Catalyst for Oxidation Reduction Reaction | en_US |
dc.title.alternative | Design of Bimetallic PtFe-Based Reduced Graphene Oxide as Efficient Catalyst for Oxidation Reduction Reaction | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 10 | en_US |
dc.source.volume | 12 | en_US |
dc.source.journal | Catalysts | en_US |
dc.source.issue | 12 | en_US |
dc.identifier.doi | 10.3390/catal12121528 | |
dc.identifier.cristin | 2101279 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |