title: Nanoporous Platinum/(Mn,Al)3O4Nanosheet Nanocomposites with Synergistically Enhanced Ultrahigh Oxygen Reduction Activity and Excellent Methanol Tolerance.
abstract: At present, metal/metal oxide composites are considered as potential oxygen reduction reaction (ORR) catalysts for energy-related applications like fuel cells. Here, we fabricated a high-activity, low Pt loading ORR electrocatalyst composed of nanoporous Pt (np-Pt) in intimate contact with lamellar (Mn,Al)3O4nanosheet (NS). In comparison to Pt/C (Johnson Matthey), the np-Pt/(Mn,Al)3O4NS catalyst shows a 11.5-fold enhancement in the mass-normalized ORR activity and much better methanol tolerance because of the metal-support interactions between np-Pt and (Mn,Al)3O4. Furthermore, the combination of electrochemical experiments with theoretical calculations verifies that the ORR on the np-Pt/(Mn,Al)3O4NS catalyst is a direct 4e-pathway in the alkaline solution. In addition, the electrocatalytic mechanisms have also been rationalized by density functional theory (DFT) calculations.
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China.
authors.forename: Conghui
authors.initials: C
authors.lastname: Si
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China.
authors.forename: Wensheng
authors.initials: W
authors.lastname: Ma
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China.
authors.forename: Hui
authors.initials: H
authors.lastname: Gao
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China.
authors.forename: Lanfen
authors.initials: L
authors.lastname: Lv
authors.affiliation: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China.
authors.forename: Zhonghua
authors.identifier: http://orcid.org/0000-0002-2883-4459
authors.initials: Z
authors.lastname: Zhang
keywords: density functional theory (DFT) calculations; methanol tolerance; nanoporous platinum; oxygen reduction reaction (ORR); strong metal−support interactions (SMSIs)