报告题目：New design of 1D nanostructure electrodes for proton exchange membrane fuel cells 基于一维纳米材料的质子交换膜燃料电池电极结构设计
报 告 人：杜尚丰 英国伯明翰大学化学工程系
报告时间：2019年10月24日（星期四）上午9 : 00-10:00
报告地点：逸夫工程馆105会议室

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化学与化工学院
2019年10月22日

报告人简介:
杜尚丰，英国伯明翰大学化学工程系副教授、博士生导师、低温燃料电池与电解槽课题组组长。1999年毕业于清华大学材料科学与工程系，2005年在中科院过程所获得博士学位。2016至2017年间在德国马普学会金属所做博士后，之后获得欧盟玛丽居里学者基金进入英国伯明翰大学，与JKR经典颗粒吸附理论建立人Kevin Kendall院士合作开始燃料电池的研究。2009年获科学城研究员基金开始独立从事研究工作。现为自然科学出版社《科学报告》期刊编委，英国工程与自然科学研究理事会燃料电池及其燃料博士生培训中心理事。

报告摘要：
The advances of materials synthesis and nanotechnology have brought in tremendous progress to the development of proton exchange membrane fuel cells (PEMFCs), in particular on understanding catalytic mechanisms of fuel cell reactions on catalyst surfaces. Many new catalyst approaches and concepts have been reported. However, there are still big challenges to make the developed novel nanostructures into practical electrodes for fuel cell devices. At Birmingham, we recently demonstrated a new approach to prepared catalyst electrodes from aligned ultrathin nanowires. This approach combines in-situ growth with single crystal nanowires to fabricate nanostructured thin film catalyst electrodes. Catalyst layers are produced with a monolayer array of nanowires at a thickness less than half micrometre. Such thin catalyst layers with the open structure are considered advantageous to minimize internal resistance and mass transport limitations leading to high power performance. The removal of carbon support, for which the corrosion has been considered as a big challenge in fuel cell operation, further improves the durability. This talk will discuss the lessons we learnt from the surface modification in the fabrication of the electrodes and its potential for other electrochemical energy conversion systems.