Question

Increase in current density will increase​

Answer 1

2.8.4.5.3 Current Density

The current density J at the cathode is generally 3–6 A cm−2. The current density is determined by the concentration of the rare earth ions, circulation of the electrolyte, and electrolytic temperature. An appropriate increase in current density can result in a more negative cathode potential, and favor the discharge of rare earth metals by reducing the relative loss of the metal and increasing the current efficiency. This is because the current density at cathode determines the relative speed of metal dissolution and discharge. However, if the current density at the cathode is too high, the possibility of alkali metal reduction increases, and the cathode zone or even the overall fused salt can be overheated.