Periodic Reporting for period 3 - DEFACTO (Battery DEsign and manuFACTuring Optimization through multiphysic modelling)
Reporting period: 2022-07-01 to 2023-12-31
The project consortium combines competences in multiple fields of modelling and characterization of lithium-ion battery materials, electrodes and cells. As a result, the effects of the different production parameters and their interactions on the cell performance will be described and better understood, and the information provided by the models and simulation will result in an increase of the production’s overall efficiency, in a decrease of the time necessary to take an idea from its conception to the market and, consequently, in a reduction of the production process time and cost. This approach will be applied to the current G/NMC industrial cells and it will be extended to last generation 3b prototypes (high capacity and high voltage cells with a high Ni-content and a low Co-content with silicon-graphite composite anodes). Characterisation tests will also provide data for model development and validation, and for gaining understanding on manufacturing process parameters and cell ageing mechanisms.
Within the project, the consortium will not only generate significant information and computational tools for the acceleration of the cell development process, but also it will foster an environment that will allow the battery market in Europe to grow and strengthen. The resulting simulation tools will predict optimized cell design and cell manufacturing parameters which will be validated by prototyping and manufacturing data of advanced generation 3b cells. In particular, the validated computational simulations will be a powerful tool to (i) tailor new optimum cell designs, (ii) optimise manufacturing steps of electrode processing and electrolyte filling, and (iii) shape new generation 3b materials. Sensitivity analysis will demonstrate model robustness and reduce the number of experiments needed during cell development. The optimization algorithms will enhance cell performance and durability through optimised designs and manufacturing processes. In addition, one of the multiphysics model developed within the project will be released as an open-source simulation tool, where mechanical and electrochemical ageing mechanisms will be included at a reasonable computational cost.