《Hydrogen generation by Photoelectrochemical water splitting using lithium doped bismuth vanadate photoanode》学术报告
应郑州大学橡塑模具国家工程研究中心邀请，美国亚利桑那州立大学A.M. Kannan教授将莅临我中心做学术报告。欢迎广大师生积极参加！
报告题目：Hydrogen generation by Photoelectrochemical water splitting using lithium doped bismuth vanadate photoanode
报告人：A.M. Kannan 教授
报告时间：2019年11月25日（周一）15:00
报告地点：文化路与丰产路叉口模具大厦12楼学术报告厅
橡塑模具国家工程研究中心
2019年11月20日
报告人简介：A.M. Kannan is a Professor in the Polytechnic School of the Ira A. Fulton Schools of Engineering at Arizona State University, USA, specializing in low temperature fuel cells, solar cells, and large-scale energy storage in batteries. He was Visiting Professor at Tampere University of Technology, Finland, Principal Scientist at the VTT Technical Research Center of Finland, and Distinguished Visiting Professor at Yuan Ze University, Taiwan and a “Distinguished Chair” awardee through Fulbright Fellowship at the Aalto University, Finland. He possesses strong academic and professional experience, having also worked as Chief Scientist at Hoku Scientific Inc., Hawaii. Dr. A.M. Kannan has published extensively and presents regularly at international conferences on batteries and fuel cells. He serves as an Associate Editor of the International Journal of Hydrogen Energy, as well as on other editorial boards. He received his M.S. in Chemistry from Madurai Kamaraj University, India, in 1985, and completed his Ph.D. in 1990 at the Indian Institute of Science, India.
报告简介：Photoelectrochemical performance of BiVO4 photoanode is limited by poor light absorption, charge separation and transfer efficiencies. For the first time in the literature, Li doped nano-porous BiVO4 photoanode showed complete bulk charge separation efficiency (~100%) at 1.23 V vs RHE along with enhanced light absorption for water splitting. Li doping showed an increase (>20 times) in the photoelectrochemical water splitting compared to pristine BiVO4 photoanode. In particular, oxygen evolution catalyst was also employed for further improving the photoelectrochemical performance (4.2 mA.cm-2) of Li:BiVO4 photoanodes. The density functional theory calculations showing the formation of inter-band with band gap reduction due to interstitial Li doping in BiVO4 structure support enhancement in photoelectrochemical performance. In addition, Li doping in the BiVO4 lattice void positions led to a record photocurrent density of 7.3 mA.cm-2 at 1.23 V vs RHE in the presence of hole scavenger under one sun illumination. Further, present study systematically demonstrates role of Li in BiVO4 host for water oxidation through a detailed characterization and study of optical and charge transport properties.
