The invention of the Daniell cell.

definition

The Daniell cell is a primary cell with a constant electromotive force of 1.1 volts. It usually consists of a copper electrode in a copper sulphate solution and a zinc electrode in dilute sulphuric acid or zinc sulphate; the solutions are separated by a porous partition or by gravity[1].

INVENTION

The English chemist and physicist John Frederic Daniell invented[2] the Daniell cell in 1836 after looking for a way to solve the problem of hydrogen bubbles forming on voltaic piles. He called it the “constant battery”. Here is an illustration of his original cell:

[ux_image_box img=”1476″ image_width=”70″]

[/ux_image_box]

inventor

Here is an oil painting[3] of John Frederic Daniell:

[ux_image_box img=”1480″ image_width=”50″ link=”https://artuk.org/discover/artworks/john-frederic-daniell-frs-215672″ target=”_blank”]

1790-1845

[/ux_image_box]

sources
  1. https://encyclopedia2.thefreedictionary.com/daniell+cell
  2. https://royalsocietypublishing.org/doi/10.1098/rstl.1836. 0012
  3. https://artuk.org/discover/artworks/john-frederic-daniell- frs-215672

Leave a Comment

Your email address will not be published. Required fields are marked *