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An ion-selective electrode (ISE), also known as a specific ion electrode (SIE), is a simple membrane-based potentiometric device which measures the activity of ions in solution. [1] It is a transducer (or sensor ) that converts the change in the concentration of a specific ion dissolved in a solution into an electrical potential .
Most electrodes work over a limited range of conditions, such as pH or temperature, outside of this range the electrodes behavior becomes unpredictable. The advantage of a pseudo-reference electrode is that the resulting variation is factored into the system allowing researchers to accurately study systems over a wide range of conditions.
The active electrode particles. A binder used to contain the active electrode particles. A conductive agent used to improve the conductivity of the electrode. The mixture created is known as an ‘electrode slurry’. The electrode slurry above is coated onto a conductor which acts as the current collector in the electrochemical cell.
negative electrode with current collector (metal grid, connected to metal casing) separator (between electrodes) The jelly roll or Swiss roll design is the design used in the majority of cylindrical rechargeable batteries , including nickel–cadmium (Ni-Cd), nickel-metal hydride (Ni-MH), and lithium-ion (Li-ion).
Potentiometry passively measures the potential of a solution between two electrodes, affecting the solution very little in the process. One electrode is called the reference electrode and has a constant potential, while the other one is an indicator electrode whose potential changes with the sample's composition. Therefore, the difference in ...
Compounds are reduced at the cathode. Radical intermediates are often invoked. The initial reaction takes place at the surface of the electrode and then the intermediates diffuse into the solution where they participate in secondary reactions. The yield of an electrosynthesis is expressed both in terms of the chemical yield and current efficiency.
Onward Therapy, the makers of the therapeutic ARC-EX device, explain that the non-invasive device works via electrodes placed on the back of the neck. View this post on Instagram A post shared by ...
Typically, Nickel based metals are used as the electrodes for alkaline water electrolysis. [15] Considering pure metals, Ni is the least active non-noble metal. [16] The high price of good noble metal electrocatalysts such as platinum group metals and their dissolution during the oxygen evolution [17] is a drawback.
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