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2014 年 12 月 10 日
Seminar - Model Developments and Validation studies on Polymer Electrolyte Membrane Fuel Cells By Dr. Liang Hao

Date: 10 December 2014 (Wednesday)

Time: 11:00 am – 12:00 pm

Venue: EF305, The Hong Kong Polytechnic University

Abstract:

This talk will include two parts. In the first part the development of innovative
methods for characterizing the mechanical properties of nanowires, nanobelts and
ultrathin films will be introduced. In the second part the fundamental understanding of
deformation mechanisms of a thin film multilayered structure under mechanical loading
and its removal characteristics involved in abrasive machining will be discussed.

Polymer electrolyte membrane (PEM) fuel cell, as a promising energy conversion technology, has made significant progress in the past several decades. The application of PEM fuel cell on vehicle is now at the beginning of its commercialization. However, several challenges still exist. These challenges include fuel cell performance, cost and durability. Due to the small scale of membrane-electrode-assembly (MEA) in PEM fuel cells, modeling has the advantages to study these issues by providing insightful understanding of the transport processes and phenomena that are difficult to be explored through experiments. This presentation will focus on the development of the fully two-phase model of PEM fuel cells, and its sub-models including the interfacial model, the low Platinum loading model and the Platinum degradation model in cathode catalyst layer. The validation of these models will also be presented. These models provide a good understand of water, oxygen and Platinum ion transport in PEM fuel cells.

Bio-sketch:

Dr. Liang Hao is a research associate in Prof. Chaoyang Wang’s group at Electrochemical Engine Center (ECEC), the Pennsylvania State University, USA. Prior to joining ECEC, he obtained his PhD in Mechanical Engineering from Shanghai Jiaotong University in 2010, where he worked on lattice Boltzmann meso-scale simulations of gas and liquid transport in GDL of PEM fuel cells under the supervision of Prof. Ping Cheng. He received his Bachelor’s and Master’s degree from Xi’an Jiaotong University in 2003 and 2006, respectively. His recent research interests focus on modeling of transport phenomena in PEM fuel cell and lithium battery, as well as heat and mass transport processes in microsystems.