文献类型：期刊文献

英文题名：The hydroxide-mediated non-CO pathway: Overcoming CO poisoning in methanol electrolysis at 500 mA cm-2

作者：Zhang, Guoqing[1];Guan, Zeyu[1];Zhang, Ying[1];Lei, Linfeng[1,2,3];Li, Siyao[1,2];Zhuang, Linzhou[1,2];Xu, Zhi[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[3]Suzhou Lab, Suzhou, Peoples R China

年份：2025

卷号：71

期号：12

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20253619095320);WOS:【SCI-EXPANDED(收录号:WOS:001559447400001)】；

基金：National Natural Science Foundation of China, Grant/Award Numbers: Nos. 22378119, Nos. 22075076, Nos. 22208092; Shanghai Pilot Program for Basic Research, Grant/Award Number: 22TQ1400100-4

语种：英文

外文关键词：hydrogen evolution reaction; hydroxide-mediated; methanol electrolysis; non-CO pathway; PtRu/Ni(OH)(2)

摘要：Replacing the oxygen evolution reaction with the methanol oxidation reaction (MOR) is a promising strategy for energy-efficient H-2 production, yet it is severely hampered by CO poisoning of Pt-based catalysts. We introduce a strategy to intrinsically prevent CO formation by reshaping the reaction landscape via a hydroxide-rich interface. The designed catalyst, featuring a PtRu nanoalloy anchored on in situ grown Ni(OH)(2) nanosheets, provides abundant OH* species. These OH* intercept the CHO* intermediate, diverting the reaction toward a formate pathway and completely bypassing CO* formation. In situ spectroscopy and mass spectrometry confirm this exclusive non-CO route, showing no CO species formation. Consequently, the catalyst delivers ultrahigh MOR mass activity of 3.31 A mg(Pt)(-1). When assembled into a hybrid electrolyzer, it sustains 500 mA cm(-2) for >92 h at an ultralow cell voltage (0.80 V). This work validates a robust hydroxide-mediated design principle that eliminates CO poisoning at its source, enabling practical, high-current H-2 production.