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Any one of the mechanisms which produce a speeding up of half-cell reactions at electrode surfaces.



the change in the rate and selectivity of electrochemical reactions achieved by means of the catalytic action of electrodes, upon whose surfaces these reactions occur.

Electrocatalysis was first observed at the beginning of the 20th century, when the dependence of the rate of the cathodic evolution of hydrogen on the electrode material was established in a series of studies. However, it became widespread only after 1960, mainly in connection with investigations related to fuel cells. Electrocatalysis is closely related to the adsorption of the reactants, intermediate products, and final products of a reaction.

The major problem in the theory of electrocatalysis is the explanation of the nature and prediction of the catalytic activity of various electrode materials. The concept of electrocatalysis is sometimes also extended to the study of adsorption and other physicochemical properties of the surface of various catalysts by electrochemical methods and to the study of the kinetics and mechanism of the electrochemical steps in catalytic processes in solutions—liquid-phase reduction or oxidation. In some cases, these processes are reduced to coupled electrochemical reactions, such as the cathodic reduction of a hydrogenated compound and the anodic oxidation of hydrogen.

Electrocatalysis is of great importance in improving the operating efficiency of chemical sources of current and electrolyzers. In many cases, electrodes coated with platinum catalysts are used in these devices to accelerate the electrochemical processes. A problem of practical importance in electrocatalysis is the development of less expensive and more available catalysts using metallic and nonmetallic materials with high electrocatalytic activity, including oxides and organic semiconductors.


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Gasteiger's addition to the Pajarito Powder team, "Hubert is truly a top expert in fuel cell electrocatalysis and will contribute with his knowledge as well as his experience working on fuel cells at large and small companies.
Chemists, biophysicists, and other biological scientists describe how electrocatalysis and electrochemistry are being applied to biological systems.
2b), playing a role in enhancing the charge transport and electrocatalysis toward triiodides.
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The emerging fields of electrocatalysis, photocatalysis and phase transfer catalysis are overviewed in compact and clear sections of 20, 8 and 7 pages, respectively.
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This would be useful for understanding electrocatalysis in fuel cells, he says.
Originally working with PCBs in organic solvents, Rusling and his colleagues have recently adapted this electrocatalysis for a water-based system by using surfactant (soap-like) molecules to dissolve and attract both the oily PCBs and the catalyst (a polyaromatic-hydrocarbon derivative) into tiny, concentrated "microcatalytic packages.
However, our continued research has revealed that this coating may offer broad benefits in many electrocatalysis applications, such as fuel cells.
Topic 1: PGM-free Catalyst and Electrode R&D4 projects will leverage the Electrocatalysis Consortium (ElectroCat) to accelerate the development of catalysts made without platinum group metals (PGM-free) for use in fuel cells for transportation.
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