In situ atomic-scale observation of oxygen-driven core-shell formation in Pt3Co nanoparticles

• Published in: Nature communications Vol. 8; no. 1; pp. 1 - 8
• Main Authors: Dai, Sheng, You, Yuan, Zhang, Shuyi, Cai, Wei, Xu, Mingjie, Xie, Lin, Wu, Ruqian, Graham, George W., Pan, Xiaoqing
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 07.08.2017; Nature Publishing Group; Nature Portfolio
• Subjects: 639/301/299/893; 639/301/357/354; 639/301/930/12; Catalysis; Cathodes; Cell cathodes; Chemical reduction; Cobalt; Cobalt oxides; Density functional theory; Electron microscopy; Fuel cells; Fuel technology; High temperature; Humanities and Social Sciences; Microprocessors; multidisciplinary; Nanoparticles; Nuclear fuels; Ostwald ripening; Oxygen; Oxygen reduction reactions; Platinum; Platinum base alloys; Science; Science (multidisciplinary); Surface layers

The catalytic performance of core-shell platinum alloy nanoparticles is typically superior to that of pure platinum nanoparticles for the oxygen reduction reaction in fuel cell cathodes. Thorough understanding of core-shell formation is critical for atomic-scale design and control of the platinum sh...