Nickel Cadmium Battery Reaction Equation

The chemical reaction in the nickle cadmium battery or cell is perfectly reversible.

Nickel cadmium battery reaction equation. The nickel cadmium battery ni cd battery or nicad battery is a type of rechargeable battery using nickel oxide hydroxide and metallic cadmium as electrodes. And our two products cadmium hydroxide and nickel hydroxide are both solids that precipitate on the electrodes in the battery and that makes it easy to reverse the reaction because if you re reversing your reaction you need to start with cadmium hydroxide and nickel hydroxide and those are already there so it s easy to reverse this. The electrolyte is a solution of potassium hydroxide koh with a small addition of lithium hydrate which increases the capacity and life of the battery. When fully charged the positive plate is ni oh 2 and negative plate is cd oh 2 while discharging the positive plate converts into ni oh 3 and the negative plate is converted into pure cd.

They operate over a wide temperature range give approximately 2000 cycles and can be charged in less than 1 h. In the case of the nickel cadmium battery the cadmium electrode has two important features. The reactions at the nickel oxide electrode are. The nickel cadmium battery system still uses the same positive electrode as the nickel iron one while the negative electrode is cadmium.

In eqns 4 6 the cell reactions during charging and discharging are presented. Nickel cadmium batteries are used in various developmental electric vehicles. The chemical conversion is reverted when a discharged battery is charged again. A nickel cadmium cell has two plates.

The maximum cell voltage during charge is 1 3 v and the average cell voltage is 1 2 v. Nickel cadmium batteries at the 1 2h rate yield twice the energy density of lead acid batteries i e. The abbreviation ni cd is derived from the chemical symbols of nickel.