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

verfasst von

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.

Externe Organisation(en)

Max-Planck-Institut für Dynamik komplexer technischer Systeme
Otto-von-Guericke-Universität Magdeburg
Johnson Controls International plc (JCI)

Typ

Artikel

Journal

Journal of the Electrochemical Society

Band

2010

Seiten

A243-A253

ISSN

0013-4651

Publikationsdatum

2010

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Elektronische, optische und magnetische Materialien, Erneuerbare Energien, Nachhaltigkeit und Umwelt, Oberflächen, Beschichtungen und Folien, Elektrochemie, Werkstoffchemie

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1149/1.3272535 (Zugang: Unbekannt)