26 Mar '17, 10am

.@Aalto University team develops new catalyst for hydrogen evolution reaction; one-hundredth the amount of Pt

.@Aalto University team develops new catalyst for hydrogen evolution reaction; one-hundredth the amount of Pt

Platinum-based catalysts currently have shown the most efficient electrocatalytic activity for the hydrogen evolution reaction (HER, 2H+ + 2e- → H2 ). However, the high price and scarcity of Pt oblige us to reduce the amount of Pt used in electrocatalytic materials. A promising strategy to reduce the use of Pt is the synthesis of single-atom or pseudo atomic-scale Pt. In this strategy, the size of Pt particles further decreases from nano- to sub- nanometer or atomic scale. Consequently, the catalytic properties of the atomic-scale metal can be also drastically changed, providing the possibility of selective tuning of the catalyst activity. Nevertheless, the atomic-scale catalysts are not stable because of their high surface energy and therefore, they should be decorated on the supports providing strong metal–support interactions to prevent the agglomeration of atoms.

Full article: http://www.greencarcongress.com/2017/03/20170326-aalto.html

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