6333 Concentration Polarization

Concentration polarization is caused by the formation of a reactant concentration gradient at the electrode surface. This concentration gradient is formed due to the rapid consumption of reactants at the electrode surface when the bulk fluid does not have sufficient time to replenish the reactants to their original concentration. This loss of potential can be caused by a number of physical mechanisms including (1) diffusion in the gas phase within the electrode pores, (2) solution of reactants into the electrolyte, (3) dissolution of the products out of the electrolyte, and (4) diffusion of reactants and products between electrolyte and electrochemical reaction sites. The overall effect of concentration overpotential is determined as follows:

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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