nickel zinc accu (NiZn)

Nickel-zinc batteries(NiZn) were developed over a hundred years ago, but due to chemical decomposition caused by the electrolyte, they only had a limited service life. It was not until the development of a suitable electrolyte in the 1990s that nickel-zinc batteries with many charging cycles could be realized without the zinc electrode dissolving.

The NiZn battery consists of a nickel cathode and a zinc anode, which are located in the electrolyte. They are characterized by a high energy density with a theoretical value of 372 Wh/kg; in practice, values of about 100 Wh/kg are currently achieved. NiZn batteries have the advantage over NiMH batteries that they have a nominal voltage of 1.6 V, compared to 1.2 V of NiMH batteries, and can therefore directly replace a primary cell of 1.5 V. An advantage over NiCd batteries is the better conductivity of the zinc anode of the NiZN battery compared to the cadmium anode, which allows the NiZn battery to be subjected to higher charging and discharging currents for short periods.

The charging process of NiZn batteries uses the IU charging method( CCCV) with constant current and constant voltage. NiZn batteries can be used in camera flashes, automotive technology, industrial and military applications.