Download Abstract Galvanic cell

Lecture: Galvanic cell
Abstract
A galvanic cell is an electrochemical cell which converts the free energy of a
chemical process into electrical energy. A photogalvanic cell is one which generates
species photochemically which react resulting in an electrical current through an
external circuit. Despite the comparatively late development of potentiometry, the
application of potentiometric measurements for analytical purposes was established
with the development of the glass electrode in 1909 for a selective potentiometric
response to hydronium ion concentrations. A second milestone in the development
of potentiometric measurements was the introduction of the hydrogen electrode for
the measurement of hydronium ion concentrations, which was also of significant use
for other electrochemical methods.
In this lecture considers the way to improve the knowledge of students and
conceptual difficulties in understanding basic aspects of electrochemistry related to
galvanic cells. In order to avoid misunderstanding in electrochemistry, the method
of electromotive force (EMF) calculation of galvanic cells and their classification
into various types have been proposed. This lecture will present examples of the
photogalvanic cell, recent developments and the critical processes. An estimate of
the maximum conversion efficiency of several types of cells will be made. The
lecture will be of great use to engineering and science students. Professionals
involved in the research and development of solar technology will also benefit from
the lecture. Requiring students to draw and explain molecular representations of
some electrochemistry experiments, such as reactions in galvanic cells, may reveal
their understanding and reveal some of their alternative concepts.