This action is not available. A concentration cell is an electrolytic cell that is comprised of two half-cells with the same electrodes, but differing in concentrations. A concentration cell acts to dilute the more concentrated solution and concentrate the more dilute solution, creating a voltage as the cell reaches an equilibrium.
A detailed diagram of a concentration cell and its discharge process is given below. Concentration cells can be classified into two types, namely: These cells consist of identical solutions used as electrolytes in each half-cell. However, the half-cells differ in the concentration of the electrode (the electrodes are made up of the same material).
This is achieved by transferring the electrons from the cell with the lower concentration to the cell with the higher concentration. The standard electrode potential, commonly written as E ocell, of a concentration cell is equal to zero because the electrodes are identical.
See all authors Porous electrodes are critical in determining the power density and energy efficiency of redox flow batteries. These electrodes serve as platforms for mesoscopic flow, microscopic ion diffusion, and interfacial electrochemical reactions.
In these cells, the electrolyte tends to diffuse from higher concentration solutions towards solutions of lower concentration. An example for this type of cell is a cell where the anode consists of Zn/Zn 2+ (0.1M) whereas the cathode consists of Zn 2+ (0.01M)/Zn.
Concentration cell powered by a chemically asymmetric membrane: Theory, Sustain. Ener. Tech. and Assess., submitted; 2022. J. O’M. Bokris and A.K.N. Reddy, Electrochemistry 1: Ionics, 2nd Edit. (Kluwer, New York 2002). Concentration gradients constitute reservoirs of thermodynamic energy: entropy waiting to be maximized.
Although, the half-cells differ in the concentration of the electrode the electrodes are made up of the same material. For instance, this type of cell would be a cell that shall consist of two hydrogen electrodes and these electrodes might be …