一、报告题目：1、Multi-functional Few Layered Black Phosphorus Composite    

2、Oxygen Electrocatalysis on Transition Metal Spinel Oxides

二、报告时间：6月2日（后天）上午9点

三、报告地点：主楼2楼会议室

四、报告人：Qingyu Yan；Zhichuan J. Xu

五、报告人简介：Qingyu Yan is currently an associate professor in School of Materials Science and Engineering in Nanyang Technology University. He obtained his BS in Materials Science and Engineering, Nanjing University. He finished his PhD from Materials Science and Engineering Department of State University of New York at Stony Brook. After that, He joined the Materials Science and Engineering Department of Rensselaer Polytechnic Institute as a postdoctoral research associate. He joined School of Materials Science and Engineering of Nanyang Technological University as an assistant professor in early 2008 and became an associate Professor in 2013. He is the board member of Materials Research Express, (an IOP Journal) since 2016.  Yan has published more than 250 papers on two research area: (1) thermoelectric materials; (2) electrochemical properties of nanocrystals, with a total citation of 14757 and a h-Index of 62.

Zhichuan J. Xu in the School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore. 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.).

六、主办单位：

山东大学研究生院

材料液固结构演变与加工教育部重点实验室

山东大学材料科学与工程学院