Download e-book for iPad: Catalysis in Electrochemistry: From Fundamental Aspects to by Elizabeth Santos, Wolfgang Schmickler

By Elizabeth Santos, Wolfgang Schmickler

ISBN-10: 0470406909

ISBN-13: 9780470406908

Catalysis in Electrochemistry: From primary points to techniques for gas mobilephone improvement is a latest, entire reference paintings on catalysis in electrochemistry, together with ideas, tools, techniques, and purposes. It issues out changes among catalysis at gas/surfaces and electrochemical interfaces, in addition to the long run probabilities and effect of electrochemical technological know-how on strength difficulties. This publication contributes either to basic technological know-how; adventure within the layout, guidance, and characterization of electrocatalytic fabrics; and the commercial program of electrocatalytic fabrics for electrochemical reactions. this can be an important source for scientists globally in academia, undefined, and executive associations.

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Additional resources for Catalysis in Electrochemistry: From Fundamental Aspects to Strategies for Fuel Cell Development (The Wiley Series on Electrocatalysis and Electrochemistry)

Sample text

The distribution of crystallographic planes at the surface can be varied from that corresponding to a smooth, single-crystal surface to those of rough polycrystalline particles dispersed in a conducting substrate. The number, density, and energy distribution of active sites available at the electrode surface depends on the surface roughness structure of solid electrocatalysts. The concept of roughness is related to the geometry and distribution of reacting centers, the size and morphology of dispersed electrocatalyst particles, and their aspect ratios.

Besides chemical-to-electrical direct energy conversion, electrocatalysis becomes important in other areas such as in the development of cleaner technologies for production of substances, devices for medical applications, optimization of technical processes in which biological systems and nanomaterials are combined, as in the protection of materials in different biological environments, energy conversion in mitochondria, enzymatic systems, and processes in the brain. Applications of electrocatalysis are surveyed in the literature [3, 28, 29].

Then, the size distribution of crystallites and their average aspect ratio, for instance, the height-to-width ratio of crystallites, are interesting parameters for determining the efficiency of an electrocatalyst for a particular process [104]. On the other hand, for an electrocatalyst made of dispersed particles, the surface of each particle may consist of terrace domains surrounded by monoatomic or a few atoms in height steps. As an example, for small palladium crystals on C(0001) 42 ELECTROCATALYSIS: A SURVEY OF FUNDAMENTAL CONCEPTS −40 Δ(dr)12 / Δ(dr)bulk (%) 510 −30 320 311 332 211 511 322 221 210 321 110 331 322 321 221 320 311 210 310 −25 −20 −15 322 331 111 −10 −5 410 411 −35 111 bcc fcc bcc expt.

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Catalysis in Electrochemistry: From Fundamental Aspects to Strategies for Fuel Cell Development (The Wiley Series on Electrocatalysis and Electrochemistry) by Elizabeth Santos, Wolfgang Schmickler

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