Browsing Mechanical and Mechatronics Engineering by Supervisor "Li, Xianguo"
Now showing items 1-12 of 12
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Catalyst Layers in Polymer Electrolyte Membrane Fuel Cells: Formation, Characterization and Performance
(University of Waterloo, 2019-01-25)The structure of the catalyst layers (CLs) has a decisive impact on the performance, durability, and cost of polymer electrolyte membrane (PEM) fuel cells – these are the main technical challenges to the commercialization ... -
Development and Characterization of Graphene-based Microporous Layers for Proton Exchange Membrane Fuel Cells
(University of Waterloo, 2018-08-13)Proton exchange membrane (PEM) fuel cell is an energy-conversion device that converts the chemical energy of hydrogen and oxygen into electricity directly through electrochemical reactions with only water and heat as ... -
Development and Characterization of Size-controlled Non-spherical Platinum Nanoparticles as Catalyst for Proton Exchange Membrane Fuel Cells
(University of Waterloo, 2022-08-25)Platinum (Pt) nanoparticles with different sizes of 2nm and 5nm supported on functionalized high surface area carbon (HSC) have been successfully synthesized with a one-pot synthesis technique in large scale. Of the interest ... -
Evaporation of Liquid Wall Film in Direct Injection Spark Ignition Engine-like Conditions
(University of Waterloo, 2019-10-30)The liquid wall film formed by the spray impingement in Direct Injection Spark Ignition (DISI) engines can directly produce a large amount of Particle Matter (PM) emissions. The PM emissions can be tremendously reduced if ... -
Evaporation of Thin Lubricant Films under Laminar and Turbulent Boundary Layers
(University of Waterloo, 2019-02-07)The evaporation of engine oil hydrocarbons from the cylinder liner of internal combustion engines is a significant contributor to engine emissions. This evaporation occurs from the thin films deposited by the piston ... -
Experimental and modeling investigation of thermal behaviour and performance of lithium ion prismatic cells at cold-start temperatures
(University of Waterloo, 2018-01-05)This thesis examines the thermal behaviour of prismatic lithium iron-phosphate (LFP) cells and batteries and the influence of that behaviour on discharge performance under cold-start operating conditions representative of ... -
Investigation into the Effect of Thermal Management on the Capacity Fade of Lithium-ion Batteries
(University of Waterloo, 2017-01-03)The popularity of electric (and hybrid) vehicles has raised the importance of effective thermal management for lithium-ion batteries, both to prevent thermal runaway leading to a fire hazard, and to minimize capacity fade ... -
Investigation of the Interaction of Particulate Matter with the Gas Diffusion Layer
(University of Waterloo, 2017-06-14)Rapid global industrialization has resulted in an unprecedented level of energy consumption. Transportation comprises a significant portion of the demand for energy, and special attention has recently been paid to green ... -
Mechanical Degradation of Membrane Electrode Assemblies in Proton Exchange Membrane Fuel Cells
(University of Waterloo, 2017-06-08)The Polymer Electrolyte Membrane (PEM) fuel cell is an ideal emerging alternative power source for transportation; however, before PEM fuel cells’ widespread use, a number of technical challenges need to be overcome, ... -
Near-field Vortex Dynamics of Flows Emerging from a Rectangular Duct
(University of Waterloo, 2019-04-26)Shear layers and jets have motivated many researches to use experimental, theoretical and numerical methods for the better understanding of the fundamental physics and optimizing the flow characteristics that best suit ... -
Serial Compression Effects on Porosity, Diffusion, Permeability, and Water Droplet Contact Angle of the Gas Diffusion Layer in Polymer Electrolyte Membrane Fuel Cells
(University of Waterloo, 2020-05-14)The polymer electrolyte membrane (PEM) fuel cell is an electrochemical device that directly converts the chemical energy of hydrogen and oxygen into electricity with water and heat as byproducts. It is very promising to ... -
Stochastic Reconstruction and Morphological Studies of Catalyst Layers of Proton Exchange Membrane Fuel Cells
(University of Waterloo, 2021-11-26)Durability is one of the main obstacles that inhibits the commercialization of polymer electrolyte membrane (PEM) fuel cells for transport applications, in which the microstructure of catalyst layers (CL) under dynamic ...