Strong Fe³⁺-O(H)-Pt Interfacial Interaction Induced Excellent Stability of Pt/NiFe-LDH/rGO Electrocatalysts.

ABSTRACT: Agglomeration-triggered deactivation of supported platinum electrocatalysts markedly hinders their application in methanol oxidation reaction (MOR). In this study, graphene-supported nickel-iron layered double hydroxide (NiFe-LDH/rGO), in which Fe³⁺ was introduced to replace Ni²⁺ partially in the Ni(OH)₂ lattice to provide stronger metal-support bonding sites, was utilized to immobilize Pt nanoparticles (NPs). Given the optimized metal-support interfacial contact (Fe³⁺-O(H)-Pt) between Pt NPs and NiFe-LDH/rGO nanosheets for Pt/NiFe-LDH/rGO electrocatalysts, the Pt/NiFe-LDH/rGO electrocatalysts displayed dramatically enhanced durability than that of Pt/Ni(OH)₂/rGO counterpart as well as commercial Pt/C, and 86.5% of its initial catalyti

SUBMITTER: Han Y 

PROVIDER: S-EPMC5778055 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature