Online diagnostics for ageing, safety and reuse of lithium-ion batteries
- Monitoring electrochemical processes under various operational conditions in Li-ion batteries.
- Fast sample injector for GCMS to increase analytical accuracy at high charging rates.
- Detailed LCA database ensures the evaluation of safety and performance critical parameters as well as suitability for “second life” applications and/or recycling.
Production process
Project goal
The increased demand for energy storage –for electric mobility, but also in other domains– has put lithium-ion batteries in the focus of international R&D efforts that have led to advances in the improvement of the active materials. The goal of the DianaBatt project is to develop online diagnostics for ageing, safety and reuse of lithium-ion batteries. The data from this project can be used as the basis for making improvements to the electrolyte and/or the material or combination of materials on one hand, and evaluating the condition of the cell in order to be able to draw conclusions about its safety, lifetime, and toxicity on the other hand.
Main conclusions
- Overcharging state of the art Li-Ion batteries yield in the evolution of up to 46 different gas species.
- Decomposition of the inorganic parts of the electrolyte lead to a cascade of decomposition reactions effecting battery performance and safety.
- Detailed LCA database ensures the evaluation of safety and performance critical parameters as well as suitability for “second life” applications and/or recycling.
GCMS at AIT Battery Materials Laboratory
Figure 1: Sketch of the multiplex injector unit and the associated controller for computer-controlled, modulated GC Injections (left). The insert is the magnified view of the controller and the multiplex injector. Right: custom-built controller for the multiplex-injector.
Figure 2: Chromatograms obtained with the multiplex injector during isothermal analysis during 3 h (left) and using gradient analysis during 10 h (right) while (over)charging a LIB.
Facts
- DIANABATT – Online diagnostics for ageing, safety and reuse of lithium-ion batteries
- Programme: Mobilität der Zukunft 6. Auschreibung
- Funding agencie(s): Österreichische Forschungsförderungsgesellschaft (FFG)
- Duration of project: 11/2016 – 10/2019
- Projectcoordination: AIT Austrian Institute of Technology GmbH
Projectpartners
- TU Wien, Institut für Chemische Technologien und Analytik (https://www.cta.tuwien.ac.at/home/)
- Daxner & Merl GmbH (https://www.daxner-merl.com/de/daxner-merl)
- Lithops S.r.l. (https://www.faam.com/eng/)
