Grenet Cell Bichromate Cell Poggendorff Cell
Grenet Cell Bichromate Cell Poggendorff Cell
About the Grenet Cell
A Grenet cell or bichromate cell consists of a flask like glass jar with a hard rubber, porcelain or wood cover. From the cover two flat retort carbon or graphite plates are suspended parallel with an amalgamated zinc plate hanging between them. The zinc plate is supported by a brass sliding rod which allows the zinc to be drawn entirely out of the electrolyte. The electrolyte consists of water, potassium dichromate and sulphuric acid. The E.M.F. of the cell is between 1.92 to 2.20 volts.
The cell was actually invented by German physicist Johann Christian Poggendorff in 1842. It bears the name of Eugene Grenet, Jr. of Paris, France who made it more practical. He was granted a patent in 1859.
The patent number is #25,503.
For those of you interested, the action of this cell is represented by the following equation:
3Zn + K2Cr2O7 + 7H2SO4 = Cr2(SO4)3 + 7H2O + K2SO4 + 3ZnSO4
If you want to mix up a bichromate electrolyte, use 10 parts of water, 1 part of potassium bichromate, and 3 parts of sulphuric acid.
Do you have a Grenet cell you want to sell? Let me know, I would be interested in buying it. Do you want to buy a Grenet cell? I have quite a few for sale. Click below to email me. Also, if you have any questions, please feel free to contact me.
Copyright © 2023 Grenet Cell - All Rights Reserved.
Powered by GoDaddy
This website uses cookies.
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.