Electrochemistry
Because Volta believed that the electromotive force occurred at the contact between the two metals, Volta's piles had a different design than the modern design illustrated on this page. His piles had one extra disc of copper at the top, in contact with the zinc, and one extra disc of zinc at the bottom, in contact with the copper. Expanding on the work of his mentor Davy, in the early 1830s, Faraday studied voltaic cells in detail. This led to his founding of the area of electrochemistry. The words "electrode" and "electrolyte", used above to describe Volta's work, are due to Faraday.
Read more about this topic: Voltaic Pile