Model simulation and analysis of proton incorporation into the positive active mass of a lead/acid battery

authored by: Boris Bensmann, Richard Hanke-Rauschenbach, Eberhard Meißner, Ingo Koch, Kai Sundmacher
Abstract: In this theoretical work, a mathematical model of the positive active mass of a lead/acid battery considering the effect of proton incorporation into the solid material of the lead dioxide electrode is presented. It can be regarded as an extension of a classic isothermal description, well known from literature. The influence of the proton incorporation reaction on the transient behavior as well as on the steady-state profiles has been analyzed and compared to the classical model. A significant influence of the process of proton incorporation on the transients of the model quantities was found, which reflects a pseudocapacitive behavior of the positive active material. This effect stabilizes the positive electrode potential, especially at a short-time high rate current flow. It could be shown that the transport of protons through the active mass is also present in steady-state conditions. This allows the protons two alternative ways of transportation, liquid and solid phases, in both transient and steady-state situations. Proton transport in the solid phase has not been considered before and may explain the high pseudocapacity of lead dioxide positive active material.
External Organisation(s): Max Planck Institute for Dynamics of Complex Technical Systems
Otto-von-Guericke University Magdeburg
Johnson Controls International plc (JCI)
Type: Article
Journal: Journal of the Electrochemical Society
Volume: 2010
Pages: A243-A253
ISSN: 0013-4651
Publication date: 2010
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Renewable Energy, Sustainability and the Environment, Surfaces, Coatings and Films, Electrochemistry, Materials Chemistry
Sustainable Development Goals: SDG 7 - Affordable and Clean Energy
Electronic version(s): https://doi.org/10.1149/1.3272535 (Access: Unknown)