Synthesization, characterization, and highly efficient electrocatalysis of chain-like Pt-Ni nanoparticles

Abstract

CNPs still retain 91.2% of the specific activity, while the commercial Pt/C undergoes a drastic loss of MOR activities, retaining only 4.4% of the initial activity. It is particularly noteworthy that this nanostructure of Pt-Ni CNP solves the problem of agglomeration of nanoparticle catalysts in the reaction, and provides a new approach to obtain Pt-based nanocatalysts with high catalytic activity and stability at the same time. Our finding will provide insight into more rational designs of Pt-based bimetallic nanocatalysts with one-dimensional architectures, which is expected to promote the further development and large-scale industrial application of the direct methanol fuel.

PtNi multi-branched nanostructures as efficient bifunctional electrocatalysts for fuel cell

“…The unequal reaction kinetics of the cathode and anode in DMFCs make it urgent to prepare bifunctional catalysts that can simultaneously catalyze both reactions [9,10]. Pt is recognized as the most effective catalyst to date for both MOR and ORR, but its high cost and sluggish kinetics limit the widespread commercial application of DMFCs [11,12]. Therefore, reducing the amount of Pt, improving its utilization rate and developing high-activity and durability catalysts have become the main research directions of electrocatalysts in recent years [13][14][15][16].…”