Fraunhofer Institute to Make Next-generation Lead-acid Batteries


Lead-acid batteries, the oldest and the most commonly used ones have an organised system for disposal and undergo a well-established recycling as well. To make the service life of these batteries last long and enable them to provide high power, the battery experts from the Fraunhofer R&D Centre Electromobility Bavaria at the Fraunhofer Institute for Silicate Research ISC now joined hands with a consortium of partners from industry and research to transform this old system and make next generation lead-acid batteries.

All about their project

They launched their collaborative project – AddESun in September 2017. The project aims to safeguard the future of lead-acid batteries which will include a more sustainable production, improved charging behaviour, longer service life and higher power density.

“Our task within the AddESun project is to investigate the correlation between the chemical and physical structure of the additives and to understand what part they play within a battery”, said Jochen Settelein, AddESun project leader at the Fraunhofer ISC. “Special attention will be paid to the effect of additives on a battery’s mechanical stability, conductivity and on the porosity of the active mass”, he added.

The testing of the batteries will be at a test cell developed by Fraunhofer researchers, enabling the transfer of standardized tests to lab scale almost without any artefacts to close the gap between research and application.

The overall funding for this three-year-long project is around 3.41 million euros. The German Federal Ministry of Education and Research provided 60 percent of the project funding.