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Nickel Zinc Battery

Lecture



A nickel-zinc battery is a chemical source of current, in which the anode is zinc, the electrolyte is potassium hydroxide with the addition of lithium hydroxide, the aktode is nickel oxide. Often abbreviated as NiZn .

Advantages: high voltage (1.6 V; the largest of alkaline batteries) and energy intensity (30% higher than that of NiMh).

Disadvantages: a small resource (250-370 charge-discharge cycles).

Content

  • 1 History of invention
  • 2 Parameters
  • 3 Electrochemistry
  • 4 Application
  • 5 Manufacturers
  • 6 See also
  • 7 Literature
  • 8 References
  • 9 Notes

History of invention

In 1901, Thomas Edison received a US patent for a rechargeable nickel-zinc battery. [1] His invention was perfected by the Irish chemist James Drumm (1897–1974) and installed on four motor vehicles of his own design, which served the Dublin-Bray line from 1932 to 1948. Although the experiment was successful, the railcars were removed from the line when the batteries were exhausted.

Early models of nickel-zinc batteries could withstand only a very limited number of charge cycles. In the 1960s, nickel-zinc batteries were considered as an alternative to silver-zinc batteries for military use, and in the 1970s, they again became interested in using them in electric vehicles.

Evercel Inc. developed and patented a number of improvements for nickel-zinc batteries, but in 2004, she turned to work in this area.

Options

  • Energy intensity (W · h / kg): about - 60 W · h / kg.
  • Energy density: about - up to 255 Wh / dm³.
  • EMF: 1.78 V.
  • Operating temperature: −30 ... + 40 ° C.

Electrochemistry

2Ni (OH) 2 (s) + Zn (OH) 2 (s) 2Ni (OH) 3 (s) + Zn (s)

Application

NiZn-batteries give 80-85% of the specified energy. Perhaps this is due to the mode of operation of the charger. To achieve the maximum number of cycles, it is recommended to charge these batteries by 80-100%. Beneficial for use in digital cameras (NiMh turns off the camera when the batteries are not completely discharged - the camera is designed for 1.5 V alkaline batteries, and NiZn has a high voltage at the end of the discharge.)

Manufacturers

The leader in the production of nickel-zinc batteries of various capacities in Russia is the RIGEL company (St. Petersburg).

see also

  • Electric battery

Literature

created: 2014-10-09
updated: 2021-03-13
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Power supplies for electronic equipment

Terms: Power supplies for electronic equipment