Model Development and Kinetic Studies of Oxygen Reduction in Alkaline Solutions at a Rotating Disk Electrode PDF Download
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Author: Prosper Kwasi Adanuvor
Publisher:
ISBN:
Category : Electrochemistry, Industrial
Languages : en
Pages : 354
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Author: Prosper Kwasi Adanuvor
Publisher:
ISBN:
Category : Electrochemistry, Industrial
Languages : en
Pages : 354
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Author: Qingbo Dong
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ISBN:
Category : Proton exchange membrane fuel cells
Languages : en
Pages : 346
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Author: Melvyn Forbes
Publisher:
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Category : Electrodes
Languages : en
Pages : 406
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Category : Dissertations, Academic
Languages : en
Pages : 1252
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Author:
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Category : Dissertation abstracts
Languages : en
Pages : 532
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Category :
Languages : en
Pages : 12
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Here, an accurate and efficient assessment of activity is critical for the research and development of electrocatalysts for oxygen reduction reaction (ORR). Currently, the methodology combining the thin-film rotating disk electrode (TF-RDE) and potentiodynamic polarization is the most commonly used to pre-evaluate ORR activity, acquire kinetic data (i.e., kinetic current, Tafel slope, etc.), and gain understanding of the ORR mechanism. However, it is often neglected that appropriate potentiodynamic parameters have to be chosen to obtain reliable results. We first evaluate the potentiodynamic and potentiostatic polarization measurements with TF-RDE to examine the ORR activity of Pt nanoelectrocatalyst. Furthermore, our results demonstrate that besides depending on the nature of electrocatalyst, the apparent ORR kinetics also strongly depends on the associated potentiodynamic parameters, such as scan rate and scan region, which have a great effect on the coverage of adsorbed OHad/Oad on Pt surface, thereby affecting the ORR activities of both nanosized and bulk Pt. However, the apparent Tafel slopes remained nearly the same, indicating that the ORR mechanism in all the measurements was not affected by different potentiodynamic parameters.
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Category : Aeronautics
Languages : en
Pages : 268
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Category : Power resources
Languages : en
Pages : 816
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Category : Fossil fuels
Languages : en
Pages : 1028
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Author: Cynthia G. Zoski
Publisher: Elsevier
ISBN: 0444519580
Category : Science
Languages : en
Pages : 935
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Book Description
Electrochemistry plays a key role in a broad range of research and applied areas including the exploration of new inorganic and organic compounds, biochemical and biological systems, corrosion, energy applications involving fuel cells and solar cells, and nanoscale investigations. The Handbook of Electrochemistry serves as a source of electrochemical information, providing details of experimental considerations, representative calculations, and illustrations of the possibilities available in electrochemical experimentation. The book is divided into five parts: Fundamentals, Laboratory Practical, Techniques, Applications, and Data. The first section covers the fundamentals of electrochemistry which are essential for everyone working in the field, presenting an overview of electrochemical conventions, terminology, fundamental equations, and electrochemical cells, experiments, literature, textbooks, and specialized books. Part 2 focuses on the different laboratory aspects of electrochemistry which is followed by a review of the various electrochemical techniques ranging from classical experiments to scanning electrochemical microscopy, electrogenerated chemiluminesence and spectroelectrochemistry. Applications of electrochemistry include electrode kinetic determinations, unique aspects of metal deposition, and electrochemistry in small places and at novel interfaces and these are detailed in Part 4. The remaining three chapters provide useful electrochemical data and information involving electrode potentials, diffusion coefficients, and methods used in measuring liquid junction potentials. * serves as a source of electrochemical information * includes useful electrochemical data and information involving electrode potentials, diffusion coefficients, and methods used in measuring liquid junction potentials * reviews electrochemical techniques (incl. scanning electrochemical microscopy, electrogenerated chemiluminesence and spectroelectrochemistry)
