报告题目：Oxygen Electrocatalysis on Transition Metal

  报告人:  Zhichuan J. Xu

报告时间: 2018年10月19号 上午10:00

  报告地点:青岛科技大学四方校区CCE大楼706

 School of Materials Science and Engineering,Nanyang Technological University, Singapore

Abstract: Exploring fficient and low cost oxygen ectrocatalysts for ORR and OER is citical for developingrenewable energy technologies like fuel cells, metal-air batteries, and water clectrolyzers. This presenntation will presentsa systematic study on oxygen clectrocatalysis (ORR and OER) of tasition metal spinel oxides. Starting with a moxdelsystem of Mn.Co spinel, the presenation will introduce the orrelation of oxygen catalytic acivities of these oxides andtheir intrinsic chemical propertics.The catalytic activity was measured by rotating disk technique and the intrinsicchemical properties were probed by synchrotron X-ray abserption tchniques. It was found that moleeular orbital theoryis able t0 wllexplain their ativities. The atetion was further extended from cubic Mn-Co spinels to tetragonal Mn-Cospincls and it was found that the molccular theory is again dominant in determining the catalytic activies. Thismechanistic principle is further applied to explain the ORR/OER activites of other spinels containing other transitionmetals (Fe. Ni, Zn. Li, and elc.).

      Biography: Dr. Xu Zhichuan is an associate professor in School of Materials Science and Engineering, NanyangTechnological University. He rceived his PhD degree in Electranalytical Chemistry at 2008 and B.S. degree inChemistiry at 2002 from Lamzhou University. China, His PhD raining was reeved in Lanzhou Universily (Prof HulinLD Isitute of Physis, CAS (Prof. Hongiun Gao), and Brown University (Prof Shouheng Sun). Since 2007, he workedin State Univesity ofNew York at Binghanton as a Rescarch Associate (Prof. C.J Zhong) and from 2009 he worked inMassachusets Istiute of Technology as a Postdoctoral Rescarcher (Prof. Yang Shao-Hom & Prof. Kimberly Hamad-Schifferi. DE Xu is member of Intermational Society of Electrochemistry (ISE) and The Electrochemistry Society(ECS). He isa Fellow of The Royal Socicty of Chemistry (FRSC). He served as a guest cditor for the special sseICE12016 of Electrochimica Acta. He also servics as an assciate cditor for Nano-Micro Ltters (Springerh, theDevclopment Editor for Curent Opinion in Electrochemistry (Elsevier), and the vice president of ECS SingaporeSection