主講人：Xu Zhichuan（徐梽川）教授

徐梽川教授，就職于新加坡南洋理工大學材料科學與工程學院、太陽能能源實驗室和能源研究中心，博士生導師。英國皇家化學學會會士 (FRSC)。連續2018、2019年入選科睿唯安“全球高被引頂尖科學家” (top 1%) 。先後得獲蘭州大學學士和博士學位，博士期間先後在中科院物理研究所和美國布朗大學交流， 2007-2009年在美國紐約州立大學任助理研究員，2009-2012年在麻省理工學院從事博士後研究工作，新加坡南洋理工大學終身教職。主要從事能源電化學方面的研究，是國際電化學學會、電化學協會和美國科學促進會成員，也是電化學協會新加坡分會副主席，目前擔任多個國際知名學術期刊的編輯和編委，包括Nano-Micro Letters副主編、Electrochimica Acta特邀編輯、Chemistry-A European Journal特邀編輯和Current Opinion in Electrochemistry發展編輯。此外，先後在Nature Energy、Nature Catalysis、Chem. Soc. Rev.、Angew. Chem. Int. Ed.、Adv. Mater.等國際知名期刊上發表了很多非常重要的研究工作。

報告摘要：Exploring efficient and low cost oxygen electrocatalysts for ORR and OER is critical for developing renewable energy technologies like fuel cells, metal-air batteries, and water electrolyzers. This presentation will presents a systematic study on oxygen electrocatalysis (ORR and OER) of transition metal spinel oxides. Starting with a model system of Mn-Co spinel, the presentation will introduce the correlation of oxygen catalytic activities of these oxides and their intrinsic chemical properties. The catalytic activity was measured by rotating disk technique and the intrinsic chemical properties were probed by synchrotron X-ray absorption techniques. It was found that molecular orbital theory is able to well-explain their activities. The attention was further extended from cubic Mn-Co spinels to tetragonal Mn-Co spinels and it was found that the molecular theory is again dominant in determining the catalytic activies. This mechanistic principle is further applied to explain the ORR/OER activities of other spinels containing other transition metals (Fe, Ni, Zn, Li, and etc.). The talk further gives insight on surface reconstruction on spinel oxides and how the bulk properties affect such reconstruction during OER.

歡迎廣大師生參加！

時間：2019年12月1日（星期日）上午10:30

地點：石湖校區逸夫樓A212室