报告题目：Electrochemical Impedance Spectroscopy in Proton Exchange Membrane Water Electrolysis: Status, Features, Problems and Potentials

报告时间：11月12日（周二）下午15 :30

报告地点：新能源大楼115

报告摘要：Proton exchange membrane water electrolysis (PEMWE) holds promise as an efficient and responsive technique for green hydrogen generation, vital for de-carbonization in diverse applications spanning from transportation, energy storage, to steel production, etc. Electrochemical impedance spectroscopy (EIS), as a non-invasive diagnostic tool, is increasingly being employed to differentiate processes and optimize performance of PEMWE. This talk gives an overview of the status, features, problems and potentials of EIS in the study of PEMWE.

It is argued that the potential of EIS application in PEMWE can be further realized by upgrading its practice into the next stages. In experiment, measures to suppress the disturbance of bubbles are needed to extend the frequency range compliant with Kramer-Kronig transformation. Replacing PTL with gas diffusion layer (GDL) used in fuel cell may help to validate the power and limitation of the 1D analytical model that has considered the electronic resistance. In post-processing, the number and values of characteristic frequencies may be identified with the further development of distribution of relaxation time (DRT) method. In modeling, analytical and numerical EIS models taking into account the low electronic resistivity and 2D as well as 3D catalyst layer structure is needed to reveal the mechanism for the subtle features in the spectra.

报告人简介：

张剑波，清华大学车辆与运载学院长聘教授，学院学术委员会副主任，国际阻抗谱会议理事，亚洲阻抗谱会议理事，欧洲燃料电池论坛科学委员会委员，国际燃料电池会议理事，中国燃料电池标委会成员，Battery、eTransportation、Automotive Innovation、汽车安全与节能学报等期刊编委。

出版专著《锂离子电池结构设计理论与应用》一部，两部英文专著（Fuel Cells for Transportation, Microscopy and Microanalysis for Lithium-Ion Batteries）中Subzero startup of polymer electrolyte fuel cell与Electrochemical Impedance Spectroscopy章节撰稿人。发表SCI/EI论文90余篇，授权国家发明专利19项。

1990年毕业于清华大学工程力学系，获学士学位。1993年在北京空气动力研究所获硕士学位。1997年初获得日本文部省奖学金到东京大学航空宇宙系留学，2000年获博士学位。从2000年到2011年初，就职于日本日产汽车公司综合研究所，从事燃料电池、锂离子电池的研究与开发。2011年初，入选清华大学百人计划，到汽车工程系任教授，创立电化学动力源研究室,从事燃料电池、水电解、锂离子电池、电化学阻抗谱等领域的研究。