Nickel Cadmium Battery Chemistry

Nickel cadmium batteries have been deployed in electric vehicles up to the 1990s offering the most suitable technology at that time at a high cost about 500 kwh 1.

Nickel cadmium battery chemistry.

In a fully discharged nicd battery the cathode contains nickel hydroxide ni oh 2 and cadmium hydroxide cd oh 2 in. The nickel cadmium nicd battery is another common secondary battery that is suited for low temperature conditions with a long shelf life. They may suffer from memory effects however. Nickel cadmium batteries have higher power density and energy efficiency than nickel iron based batteries as presented in table 1.

The chemical reaction in the nickle cadmium battery or cell is perfectly reversible. A nickel cadmium battery converts chemical energy to electrical energy upon discharge and converts electrical energy back to chemical energy upon recharge. 85 90 6000 10000 to 90 capacity. The chemical conversion is reverted when a discharged battery is charged again.

The nickel cadmium battery is rechargeable so it can cycle repeatedly. However the nickel cadmium batteries are more expensive and their capacity in terms of watt hours per kilogram is less than that of the nickel zinc rechargeable batteries. In the battery this takes place in basic solution. Low self discharge nickel metal hydride battery.

90 3000 7000 to 80 capacity. 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. Nickel cadmium batteries at the 1 2h rate yield twice the energy density of lead acid batteries i e. 21 the self discharge rate is lower.

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. 100 to 50 capacity. Nickel cadmium batteries are used in various developmental electric vehicles. The abbreviation ni cd is derived from the chemical symbols of nickel ni and cadmium cd.