Semimetal-induced covalency achieves high-efficiency electrocatalysis for platinum-based Ge, Sb, Te compounds

https://phys.org/news/2024-09-semimetal-covalency-high-efficiency-electrocatalysis.html

"have both metallic/ covalent bonds... 300°C high oxygen reduction avoiding ~600°C causing uneven size, morphology, composition, structure, limiting catalyst performance... in p orbitals' partial filling, d-p π feedback bond formed between platinum/ semimetal atoms as strong covalent interaction, promoting ordering arrangement... 0.794 A mg−1 at 0.9 V mass activity, 5.1% attenuation under CO toxicity, 11X that of commercial Pt/C catalysts... PEM fuel cells"

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