Browsing University of Waterloo by Supervisor "Chen, Zhongwei"
Now showing items 21-40 of 44
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Enhanced Durability of Pt Alloy Nanoparticles Using Sulfur-Doped Graphene via Metal-Support Interactions for PEMFC Cathode Catalysis of ORR
(University of Waterloo, 2017-09-27)The hydrogen fuel cell is a form of renewable energy generation technology that produces energy electrochemically and can address energy concerns in the near future, especially due to the diminishing supplies of non-renewable ... -
High Areal-capacity and Durable Aqueous Rechargeable Zinc Li-ion Battery
(University of Waterloo, 2021-07-28)Rapid deployment of renewable energy sources around the world is crucial to lessen energy shortage and environmental pollution. As the contribution of renewable energy rises, energy storage with different battery systems ... -
Improved Environmental Operation of Alcohol Breathalyzers with Functionalized Graphene Nanocomposite Membranes
(University of Waterloo, 2016-09-06)Driving under the influence of alcohol is prohibited or restricted in almost every country on the planet. In Canada, a Blood Alcohol Content (BAC) of 0.08 g dL-1 results in a Criminal Code offense and vehicle impoundment. ... -
In-situ MnO2 Electrodeposition and its Negative Impact to Rechargeable Zinc Manganese Dioxide Batteries
(University of Waterloo, 2018-12-19)Achieving high rechargeability with the economically feasible and environmentally friendly Zn-MnO2 batteries has been the goal of many scientists in the past half century. Recently, the stability of the system saw a ... -
Ionic Liquid Assisted Composite Ceramic-Polymer Electrolyte for Lithium Metal Batteries
(University of Waterloo, 2020-02-11)Facing demands for smaller and more powerful batteries to keep pace with technological advances, as the conventional lithium-ion battery (LIB) is reaching its inherent physicochemical limit, new electrode materials must ... -
Material Design and Engineering for Polymer Electrolyte Membrane Zinc-Air Batteries
(University of Waterloo, 2018-03-23)Zinc-air batteries, whose advantages include relatively high energy density (1218 Wh kg-1), abundance of zinc in earth’s crust, and very safe operational characteristics, are promising for applications in consumer electronics, ... -
Mathematical Model and Calendar Aging Study of Commercial Blended-Cathode Li-ion Batteries
(University of Waterloo, 2016-08-26)Commercial blended-cathode Li-ion battery (LIB) systems has been dominating the burgeoning market for portable energy, ranging from consumer electronics to automotive applications. In order to successively improve the ... -
Multi-Physics Modeling of Lithium-Ion Battery Electrodes
(University of Waterloo, 2020-10-19)Lithium-ion batteries (LIBs) dominated the market due to their relatively high energy/power density, and long cycle life. However, a multitude of factors need to be addressed which have hindered further development of LIBs ... -
Na0.66(Ni0.13Mn0.54Co0.13)O2 Cathode Coated with Alucone by Molecular Layer Deposition for Sodium Ion Batteries
(University of Waterloo, 2018-08-16)The importance of batteries has skyrocketed in the twentieth century due to an impending energy crisis arising from a dependence on fossil fuels. Global warming has alerted the world to the environmental dangers of fossil ... -
Nanoscale X-ray Computed Tomography Based Modeling of Lithium-ion Battery Electrodes
(University of Waterloo, 2018-01-09)Because of their high energy/power density, long cycle life, and extremely low rate of self-discharge, lithium-ion batteries (LIBs) have dominated portable electronics, smart grid, and electric vehicles (EVs). Although ... -
Nanostructured catalyst design to improve ultrafine Pt nanoparticle utilization and stability for PEMFCs
(University of Waterloo, 2020-05-15)Polymer electrolyte membrane fuel cells (PEMFCs) is an electrochemical device which efficiently converts chemical energy stored in hydrogen and oxygen into electricity and water. Widely regarded as promising alternative ... -
Nanostructured Materials and Electrodes Engineering for Efficient CO2 Conversion
(University of Waterloo, 2020-09-11)The conversion of CO2 to valuable chemicals via electrochemical CO2 reduction reactions (CO2RR) offers a clean approach for recycling CO2 with sustainable and environmental benefits. Among a variety of derived chemicals, ... -
Nanostructured non-precious metal catalyst and its behavior in the catalyst layer in PEM fuel cells
(University of Waterloo, 2017-02-28)Polymer electrolyte membrane (PEM) fuel cells have been viewed as promising power source candidates for transport, stationary, and portable applications due to their high efficiency and low emissions. The platinum is the ... -
Nanostructured Spinel Oxides as Bi-functional Electrocatalysts for Rechargeable Metal-Air Batteries
(University of Waterloo, 2017-08-24)Due to continuously increasing energy demands, particularly with the emergence of electric vehicles (EV), smart energy grids, and portable electronics, advanced energy conversion and storage systems such as fuel-cells and ... -
Novel SiCNW-Si/SiOₓ-graphite based composite anode materials for Li-ion battery
(University of Waterloo, 2018-08-16)Over the past years, the extensive use of graphite as an anode material in a Li-ion battery (LIB) led to its commercialization and use as the standard anode material in a LIB. The use of graphite as an anode material in ... -
Organic and Inorganic Nanostructured Materials as Electrodes for Hybrid Capacitors
(University of Waterloo, 2020-09-03)Global energy demands are expected to continuously grow in the coming decades, while the dominant source of energy remains finite fossil fuels. In addition to this challenge, excessive consumption of fossil fuels has ... -
Performance Optimization of a Cation-Disordered Rock-Salt Positive Electrode Material for Next-Generation Lithium-ion Batteries
(University of Waterloo, 2020-08-28)The growing threat of climate change has sparked a shift in societal norms surrounding the reliance on fossil fuels for our energy and transportation sectors. Driven by this shift, the global demand for sustainable energy ... -
Platinum Group Metal-Free Catalyst and Catalyst Layer Design for PEM Fuel Cells
(University of Waterloo, 2019-12-12)Facing the crises of energy shortage and climate change, it becomes increasingly urgent to find renewable and low carbon emission replacements for fossil fuels. Renewable energy such as wind power, hydropower, solar energy, ... -
Rational Structure Design of Transition Metal Chalcogenide Multifunctional Sulfur Immobilizer for Fast and Durable Li-S Performance
(University of Waterloo, 2020-08-12)Lithium-sulfur (Li-S) batteries are one of the most promising candidates for next-generation energy storage owing to their high energy density, environmental benignity and cost effectiveness. However, the practical application ... -
Rationally Engineering Porous Carbon-Based Metal Nanocomposites for Efficient and Durable Electrocatalysis Applications
(University of Waterloo, 2021-08-26)Electrocatalysis plays an essential role in electrochemical energy storage and conversion, enabling a number of sustainable processes for future technologies such as metal−air batteries, sulfur-based batteries, and carbon ...