Realising the electrochemical stability of graphene: scalable synthesis of an ultra-durable platinum catalyst for the oxygen reduction reaction
Gyen Ming A. Angel, Noramalina Mansor, Rhodri Jervis, Zahra Rana, Chris Gibbs, Andrew G. Seel, Alexander F. R. Kilpatrick, Paul R. Shearing, Christopher A. Howard, Dan J. L. Brett, Patrick L. Cullen
Abstract
is reduced directly by negatively charged single layer graphene sheets in solution. The resultant nanoparticles are of optimal dimensions and can be uniformly dispersed, yielding high catalytic activity, remarkable stability, and showing a much smaller decrease in electrochemical surface area compared with an optimised commercial catalyst over 30 000 cycles. The stability is rationalised by identical location TEM which shows minimal nanoparticle agglomeration and no nanoparticle detachment.
Topics & Concepts
Oxygen reduction reactionGraphenePlatinumCatalysisElectrochemistryMaterials scienceOxygen reductionScalabilityReduction (mathematics)NanotechnologyChemical engineeringElectrodeChemistryComputer scienceOrganic chemistryEngineeringPhysical chemistryMathematicsDatabaseGeometryElectrocatalysts for Energy ConversionAdvanced Memory and Neural ComputingGraphene research and applications