Silicon Composite Anode Materials: Tailored Materials and Processes with respect to Performance and Costs
3 years (01.06.2020 – 31.05.2023)
Funding: 3 Mio. € (TUBS)
Total Project Volume: 5 Mio €
SGL Carbon GmbH, Meitingen
Glatt Ingenieurtechnik GmbH, Weimar
Varta Microbattery GmbH, Ellwangen
Summary of the overall project:
The research project "SiKo-Silicon Composite Anode Materials: Tailored Materials and Processes with respect to Performance and Costs" is funded by the German Federal Ministry of Education and Research (BMBF) as part of the 7th Energy Research Program of the German Federal Government: "Energiewende im Verkehr".
The project aims to develop and produce improved carbon-silicon composite anode materials, with increased cycle stability and improved energy density for lithium-ion batteries. The aim of the project is to adjust the structure and morphology of the C-Si composites in a controlled manner by optimizing the key raw materials used and their chemical and physical modifications. To this end, the project is investigating various systems or reactors for thermal, chemical and mechanical material and powder processing, as well as looking at new and promising process combinations in material development.
The target process is characterized by the smallest possible number of individual steps. The production of carbon-silicon composites should preferably be realized in a single-stage process in order to efficiently combine material synthesis and particle preparation and to avoid unnecessary process steps.
Aims and objectives:
Increase of energy density by improved C-Si composite materials with targeted material structure design
Development and parameterization of an economical process for Si comminution
Development and parameterization of a scalable silicon graphite composite granulation to improve particle properties
Establishment of a requirement-adapted process for electrode production
Microstructure evaluation of the composite particles in the electrode structure using DEM simulation