Browsing Chemical Engineering by Title
Now showing items 622-641 of 987
-
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 ... -
Nanocarbon-containing High Power Cathode for Rechargeable Hybrid Aqueous Battery
(University of Waterloo, 2017-08-11)Aqueous batteries have been considered to be one of the most suitable large-scale energy storage systems that require excellent safety, low cost and high power. A new secondary aqueous Zn/LiMn2O4 battery system, called ... -
Nanocellulose in Bioplastics for Sustainable Packaging
(University of Waterloo, 2023-08-11)Packaging has become a critical concern due to the prevalence of single-use plastics from petrochemicals, leading to environmental issues. To address this, interest in bio-based materials for packaging has grown, offering ... -
Nanocellulose-based systems for the removal of perfluoroalkyl compounds from water
(University of Waterloo, 2021-08-30)The contamination of drinking water sources with poly- and perfluoroalkyl substances (PFAS) is a cause for concern. These compounds have been linked to several health problems in humans, and thus there is an urgent need ... -
Nanoparticle Notch Filters for Selective Filtering of Blue Light in Contact Lenses
(University of Waterloo, 2018-08-20)The visible wavelengths are essential to a normal colour vision, however overexposure of high-energy visible (HEV) light may be damaging to both ocular and non-ocular health. Some health concerns associated with HEV light ... -
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 composites as electrochemical catalysts for Li-air batteries
(University of Waterloo, 2014-09-22)Advanced energy conversion and storage systems are drawing tremendous research attention as the energy demand for portable electronics and electric vehicle (EV) applications continues to increase. Although lithium (Li) ion ... -
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 Materials Supported Oxygen Reduction Catalysts in Polymer Electrolyte Membrane Fuel Cells
(University of Waterloo, 2013-04-24)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 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 Non-Precious Metal Catalysts for Polymer Electrolyte Fuel Cell
(University of Waterloo, 2010-12-20)Polymer electrolyte membrane fuel cells (PEFCs) have long been thought of as a promising clean alternative energy electrochemical device. They are lightweight, highly efficient, modular and scalable devices. A fuel such ... -
Nanostructured non-precious oxygen reduction reaction catalysts for electrochemical energy applications
(University of Waterloo, 2015-01-07)Fuel cell and state of the art battery technologies share a common electrochemical reaction in their operation. The oxygen reduction reaction (ORR) is a key phenomenon for the efficient operation for both electrochemical ... -
Nanostructured oxygen reduction catalyst designs to reduce the platinum dependency of polymer electrolyte fuel cells
(University of Waterloo, 2015-07-24)Polymer electrolyte fuel cells (PEFCs) are electrochemical devices that efficiently convert hydrogen and oxygen into electricity and water. Their clean point of operation emissions and fast refueling times have resulted ... -
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 ... -
Naphthalene Hydrogenation with Water Gas Shift in Model Oil/Water Emulsion Slurry over Molybdenum Sulfide
(University of Waterloo, 2009-09-30)Catalytic naphthalene hydrogenation to tetralin in water/hydrocarbon emulsions with simultaneous water gas shift as the hydrogen source was performed in a 300 ml batch autoclave as a model for aromatic hydrogenation in ... -
Natural Fiber Densification for Sustainable Composite Manufacturing
(University of Waterloo, 2023-11-23)The need for inexpensive, sustainable, and environmentally friendly materials has significantly increased in recent years as a result of rising environmental awareness. Given the widespread usage of petrochemical plastics, ... -
Natural Fiber-Plastic Composites for Construction Applications
(University of Waterloo, 2016-01-22)Natural fiber-plastic composites containing natural fibers as dispersed phase (filler) and polypropylene as matrix are an important and emerging type of compounds used in construction, automotive, consumer products, etc. ... -
Nature-Inspired Polymers: Promising Materials for OTFT-Based Sensors
(University of Waterloo, 2017-05-03)The concept of an organic thin film transistor was first introduced in the late 1980s and research was directed toward two key merits of performance, field-effect mobility and current ON/OFF ratio. Today these two key ... -
Nature-inspired robust hydrochromic film for dual anticounterfeiting
(Elsevier, 2021-06)Nature-inspired materials have been actively developed for anticounterfeiting applications. Among a variety of stimuli-responsive anticounterfeiting strategies, hydrochromic materials exhibit reversible color change in ...