Zhang, L.Ding, L.-X.Chen, H.Li, D.Wang, S.Wang, H.2018-08-282018-08-282017Small, 2017; 13(17):1-81613-68101613-6829http://hdl.handle.net/2440/113981Inhibiting CO formation can more directly address the problem of CO poisoning during methanol electro‐oxidation. In this study, 1D self‐supported porous PtAuP alloy nanotube arrays (ANTAs) are synthesized via a facile electro‐codeposition approach and present enhanced activity and improved resistance to CO poisoning through inhibiting CO formation (non‐CO pathway) during the methanol oxidation reaction in acidic medium. This well‐controlled Pt‐/transition metal‐/nonmetal ternary nanostructure exhibits a specific electroactivity twice as great as that of PtAu alloy nanotube arrays and Pt/C. At the same time, PtAuP ANTAs show a higher ratio of forward peak current density (If) to backward peak current density (Ib) (2.34) than PtAu ANTAs (1.27) and Pt/C (0.78). The prominent If/Ib value of PtAuP ANTAs indicates that most of the intermediate species are electro‐oxidized to carbon dioxide in the forward scan, which highlights the high electroactivity for methanol electro‐oxidation.en© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, WeinheimElectrocatalysts; methanol oxidation reaction; nanotube arrays; non‐CO pathway; PtAuP alloyJournal article003008280810.1002/smll.2016040002-s2.0-85013499823341911