Question

What is the significance of ion transport number?

Answer 1

Ion transport number. Ion transport number, also called the transference number, is the fraction of the total electrical current carried in an electrolyte by a given ionicspecies , ... The concept and measurement of transport number were introduced by Johann Wilhelm Hittorf in the year 1853.

Answer 2

Answer:

There is a huge significance of ion transport number. As it affects the concentration polarization of electrolytes.

Explanation:

The ion transport number is also called the Ion transference number. The ion transport number of an ion is defined as the amount of total current carried by that ion.

• It is also calculated as the ratio of partial to total conductivity. when total conductivity is measured due to the presence of all ions i.e anions & cations in the case of a simple dissolved salt mixture.

• A large ion transport number can decrease the concentration polarization of electrolytes during the charging and discharging steps, thereby creating high power density.
• E.g. It defines the efficiency of lithium-ion batteries. If there is a high Lithium-ion transport number, then the total conductivity will be high, subsequently, the kinetics of the ion transport across cathode-electrolyte and the anode-electrolyte will be faster, increasing the efficiency of lithium-ion batteries.