Lecture 19: Electrocatalysis
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چکیده
In chemistry, the concept of a catalyst is defined as a substance that can alter the velocity of a certain chemical reaction without any chemical change. This definition can be directly extrapolated for electrocatalysis. An electrocatalyst is an electrode material that interacts with some certain species during a Faradaic reaction but still remain unaltered. Since electrode reactions are heterogeneous, so electrocatalysts are usually heterogeneous catalysts, which means that the reactions take place on the surfaces of catalysts, and there exist adsoprtion/desoprtion steps on the surfaces of electrocatalysts.
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