Chemistry
Thermodynamics of electrochemical reactions in Lead-acid Battery
Authors: Isaac Adebayo Akinbulu11 and Babatunde Taofeek Ogunbayo22
Affiliations:
1. Department of Chemistry, University of Lagos, Lagos, Nigeria
2. Department of Chemistry, University of Lagos, Lagos, Nigeria
Abstract
Thermodynamics of the electrochemical reaction in lead-acid battery was investigated. A negative value of change in Gibbs’ free energy, ?G, and a positive entropy change, ?S, were obtained for the reaction. ?G was more negative at increased temperature. The reaction was exothermic, with a negative value of enthalpy change, ?H. A relatively small value of temperature coefficient of the electromotive force of the cell, (?E/?T)_P, was also obtained for the reaction.
Keywords
Thermodynamics
Temperature coefficient
and Lead-acid battery