基础论坛:Earth-abundant thin film materials for solar water splitting

文:基础与前沿研究院 图:基础与前沿研究院 / 来源:基础与前沿研究院 / 2018-10-11 / 点击量:474

  由基础与前沿研究院主办的“基础论坛”第138期邀请到瑞士苏黎世大学David Tilley教授来校作学术交流。具体安排如下,欢迎师生们参加。

  主讲人:David Tilley 苏黎世大学

  主 题:Earth-abundant thin film materials for solar water splitting

  时 间:2018年10月15日(周一)14:00-15:00

  地 点:沙河校区通信楼818室

崔.jpg

  主讲人简介:

  Prof. David Tilley was born in the United States. In 2002, he received his Bachelor’s degree in Chemistry from the University of Georgia. He then headed west to continue his studies, and in 2007 received his Ph.D. in Chemistry from the University of California, Berkeley under the supervision of Prof. Matthew Francis. Afterwards, he joined the laboratory of Prof. Erik Sorensen at Princeton University as a postdoctoral researcher (2007-2009). At this stage, his burgeoning interest in the energy problem became so great that he chose to dive into a completely new field to learn how to generate hydrogen fuel from water. He received training in photoelectrochemistry as an NSF International Postdoctoral Fellow in the laboratory of Prof. Michael Grätzel at the EPFL in Switzerland, working on water oxidation catalysis on hematite photoanodes. Following this postdoctoral fellowship, he served as Group Leader for the water splitting subgroup in the Grätzel laboratory from 2011-2014, while also continuing research on copper oxide photocathodes for hydrogen evolution. Since February 2015, David Tilley has been engaged as Assistant Professor of Molecular Approaches to Renewable Energies with tenure track in the Department of Chemistry.

  报告摘要:

  To enable widespread implementation of photoelectrochemical water splitting technology for global scale solar energy conversion, low cost materials prepared from abundant elements will be required. In this talk, I will discuss our research efforts with several thin film materials (Sb2Se3, Cu2O, CuO, and Cu2S) for solar hydrogen production.1–3 These materials are quite promising due to the relative abundance of the elements, suitable bandgap, and favorable band alignments for reducing water. For the copper based materials, a protective overlayer is required to prevent corrosion of these materials,1,3 while the Sb2Se3 is resistant to photocorrosion without protective layers even in strongly acidic media (1 M H2SO4).2 Novel dual working electrode experiments will then be discussed, which enable operando characterization of buried junction photocathodes during hydrogen evolution for a complete picture of the underlying photovoltage generation by the semiconductor during water splitting.4

  (1)  Niu, W.; Moehl, T.; Cui, W.; Wick-Joliat, R.; Zhu, L.; Tilley, S. D. Adv. Energy Mater. 2018, 8, 1702323.

  (2)  Prabhakar, R. R.; Septina, W.; Siol, S.; Moehl, T.; Wick-Joliat, R.; Tilley, S. D. J. Mater. Chem. A 2017, 5, 23139.

  (3)  Septina, W.; Prabhakar, R. R.; Wick, R.; Moehl, T.; Tilley, S. D. Chem. Mater. 2017, 29, 1735.

  (4)  Cui, W.; Niu, W.; Wick-Joliat, R.; Moehl, T.; Tilley, S. D. Chem. Sci. 2018, 9, 6062.





编辑:助理编辑  / 审核:李果  / 发布者:陈伟