Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Electrochemically active surface area"”.
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Fundamental investigation of fuel cell-based breath alcohol sensors and the cause of sensor degradation in low-humidity conditions
… the membrane in humid conditions. Loss of electrochemically active surface area of Pt is irreversible and seems to be caused by a change in sensor morphology after long-term exposure to dry conditions.
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Electrodeposition and characterization of metals and metal oxides for energy conversion and storage
… of cobalt hydroxide, ß-Co(OH)<sub>2</sub>, by electrochemically reducing tris(ethylenediamine)cobalt(III) in alkaline solution. Paper II presents a scheme to convert the ß-Co(OH)<sub>2</sub> to CoOOH and Co<sub>3</sub>O<sub>4</sub> and compares their catalytic activity for the oxygen evolution …
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Evaluation of TiO2 as a Pt-Catalyst Support in a Direct Ethanol Fuel Cell
… to that of the Pt/C catalyst based on the electrochemically active surface area.
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Conducting Polymer Implant for On-demand Ocular Drug Delivery
Introduction: Implants have become an attractive treatment option for chronic posterior eye conditions. However, a patient’s disease state and any concurrent side-effects may require a dose adjustment which is not possible with currently marketed implants. Stimuli-responsive implants present an …
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Towards electrochemical diagnostics of biochemical free radical species in aqueous microliter volumes
Reactive oxygen species (ROS) are free radicals often implicated in disease states. In probing related enzyme processes, reactant consumption must be minimized. Levitated drops show potential as microreactors where radicals are present as reactants or products. Solid/liquid interfaces are absent or …
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Preparation and characterisation of Pt-Ru/C catalysts for direct methanol fuel cells
… producing smaller particles with a higher electrochemically active surface area (ECSA).
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In-situ investigation and mitigation of carbon support corrosion of cathode catalyst in PEM fuel cells
… carbon to produce at least three types of carbon surface oxides, which are further electrochemically oxidized with water to produce CO₂ in different potential ranges. After accelerated testing of cathode catalyst degradation in PEMFC using potential cycling between 100-1400 mV at the rate of 400 …
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Design and characterization of catalysts and electrodes for electrochemical energy conversion applications
… catalyst utilization, evidenced by the high electrochemically-active surface area of gold on this material. Finally, the development of no-metal-added nitrogen-doped carbon catalysts for CO2 reduction is reported. Pyrolyzed carbon nitride supported on carbon nanotubes exhibit excellent …
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Hierarchical Carbon Structures for Advanced High Areal Capacity Lithium-Ion Battery Electrodes
… and testing of structurally engineered and high areal capacity LIB electrodes based on hierarchical carbon structures such as carbon nanotubes (CNTs). Firstly, (surface-modified) direct-spun CNT mats are proposed as conductive scaffolds for lithium metal anodes (LMAs), which are desirable for …
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Graphene-based Hybrid Electrodes for High-Performance Supercapacitors
… and structure of the electrodes to enable a high surface area and fast charge transfer with the electrolyte is vital for designing better SC systems. Typically, SC electrodes are composed of carbonaceous materials which are intrinsically lightweight, mechanically robust, and can be easily designed …
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Electrocatalysts for the reduction of dioxygen and carbon dioxide
… it is shown that this catalyst possesses a high electrochemically-active surface area of 23 m2/g Au. Reducing loadings of precious metal catalysts without sacrificing activity and selectivity offers promise for electrochemical CO2 reduction to become an economically practical process. As well, …