Preparation and characterisation of a rechargeable battery based on a conductive polymer and aluminum in an ionic liquid electrolyte

Energy storage devices like rechargeable batteries have currently a minor contribution to the challenges of the energy conversion to sustainability. Nevertheless, the growth of renewable energies will define the energy storage devices as an indispensable element of the power grid. Therefore, it is necessary to overcome the main problems of current high performance batteries like safety, an upper capacity limit and confined raw material resources. This project proposes the concept of a non-aqueous rechargeable battery characterised by safe cell reactions, a high storage capacity and earth-abundant materials like aluminum and conductive polymers.

The combination of the so far independently considered cell reactions, reversible deposition of aluminum and intercalation of three-dimensional conductive polymers in ionic liquids, provides a "rocking chair" battery in a novel approach.

Early proof of concept studies of the battery system with promising results have been performed with the current collaborative project partner, Hokkaido University (Japan) and the Technische Universität Ilmenau (Germany). The further work and the continuation of the partnership aim a detailed understanding of the complex mechanisms of the half-cell reactions and the improvement of the battery performance in order to compete as sustainable alternative for high performance batteries.

Mikito Ueda
Mikito Ueda

Professor in the Faculty of Engineering, Hokkaido University, Japan.

Major research fields: molten salts, ionic liquids, and applied electrochemistry using the liquids. Strong focus on: Electrodeposition of Al and Al alloys. High purity sodium production. Battery development of Al-Cl2 with a world patent.

Over 80 research peer review papers.

Project at other locations