Bichromate cell, 1876.
4 0 c m
actual image size: 25cm x 32cm

Bichromate cell, 1876.

© Science Museum / Science & Society Picture Library


The simplest form of one-fluid cell with a liquid depolariser is the bichromate cell invented by Robert Bunsen (1811-1899) and Johann Poggendorf (1796-1877). The bichromate battery was one of a number of different types developed from about 1840 onwards to supply a relatively large current for a long period of time - with earlier types of battery, the current dropped quickly in continuous use, though recovered when disconnected for a while. Bichromate cells were made in several different forms.

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