Customizing Pt5Ce Alloy Particle Sizes for Oxygen Reduction. DTUtweet
Sep 19 2022Reviewed by Mila Perera Using a gas-aggregation technique, two Pt-RE alloys in the nanoparticle form with even sizes, PtxY and PtxGd , have been made ready from cluster sources. Their specific activities reached 14 mA cm−2, while the mass activities approached 4 A mgPt−1. These are among the highest values reported so far.Pt-rare earth metal alloys — a family of catalysts — exhibit outstanding performance in acidic media toward the oxygen reduction reaction .
Related StoriesThe researchers look forward to synthesizing Pt-RE alloy catalysts on a considerably large scale and assessing their outstanding functioning in proton-exchange membrane fuel cells, and they have achieved noteworthy advances. Earlier research on the model PtxGd and PtxY particles made from the cluster source showed that the ideal particle sizes are from 6 to 9 nm, which is larger than that of the pure Pt nanoparticles . The varying optimum sizes arise from the Pt-RE alloy particles' unique chemical and structural properties.
This strain's effect is primarily based on the alloy core’s size. The smaller the particle, the weaker the effect. In this research, Hu and his team try to synthesize Pt-RE alloy catalysts with proposed optimal structures, an intermetallic Pt5RE phase with a particle size of 6–9 nm. Pt5Ce was selected as the phase for the target alloy since it is one of the most stable Pt-RE alloy structures indicated for the ORR, and Ce is one of the most plentiful and economic RE metals.
Ireland Latest News, Ireland Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
A smartphone's camera and flash could help people measure blood oxygen levels at homeA smartphone's camera and flash could help people measure bloodoxygenlevels at home NaturePortfolio
Read more »
What remains of Leeds city centre's 'other' rail station that was almost erased from historyThe station closed in 1967 when rail operators consolidated all city centre services into Leeds City Station, but clues can still be seen as to its past
Read more »
Inside Blue Lagoon's newest Glasgow restaurant with life-size fishing boatThe fast food joint in Gordon Street, next to Glasgow Central Station has undergone an extension. Once purely a takeaway, the outfit now boats a 70-seater restaurant.
Read more »
We tried an authentic Turkish breakfast and couldn't believe the sizeWe tried an authentic Turkish breakfast at Preston Market and couldn't believe the size
Read more »