Thus an important component of the electrochemical cell is the ionic
conductor or electrolyte Electrochemical cells are of two types In galvanic cell,
the chemical energy of a spontaneous redox reaction is converted into electrical
work, whereas in an electrolytic cell, electrical energy is used to carry out a non-
spontaneous redox reaction The standard electrode potential for any electrode
dipping in an appropriate solution is defined with respect to standard electrode
potential of hydrogen electrode taken as zero