PtTe Monolayer: Two-Dimensional Electrocatalyst with High Basal Plane Activity toward Oxygen Reduction Reaction

Wang, Y (Wang, Yu)[ 1 ] ; Li, YF (Li, Yafei)[ 1 ] *（李亚飞）; Heine, T (Heine, Thomas)[ 2,3 ]*

[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Nanjing 210023, Jiangsu, Peoples R China

[ 2 ] Tech Univ Dresden, Sch Sci, Theoret Chem, Bergstr 66c, D-01062 Dresden, Germany

[ 3 ] Helmholtz Zentrum Dresden Rossendorf, Inst Resource Ecol, Permoserstr 15, D-04318 Leipzig, Germany

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY，201810,140(40),12732-12735

PtTe is a layered bulk material that was discovered in 1897. According to first-principles calculations, it is one of the few layered materials that maintains structure and metallic character when thinned down to the monolayer. Interlayer energy is small enough to allow for chemical exfoliation techniques. Our calculations show that monolayer PtTe is a candidate to substitute Pt electrodes, and we computationally studied its catalytic performance in the oxygen reduction reaction (ORR). Remarkably, the basal plane of a PtTe monolayer exhibits excellent catalytic activity toward ORR, with a positive half-wave potential (similar to 0.90 V) and a high four-electron reduction pathway selectivity. These characteristics suggest that it outperforms Pt electrodes as catalyst, has a reduced Pt content, high Pt utilization, and a high surface area, and is a promising candidate for fuel cell components.

文章链接：

https://pubs.acs.org/doi/10.1021/jacs.8b08682

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