LiBEST3

Motivation

In recent years, lithium-ion battery technology has gained much attention. However, the current active materials used limit further capacity enhancement. Consequently, extensive research has led to the identification of various materials for both the anode and cathode sides, exhibiting high specific capacities. Despite the challenges associated with implementing these new materials, the LiBEST3 project aims to deliver high-capacity batteries based on Si-anodes, composite Li2S, and Ni-rich NCM cathodes, along with 'anode-free' battery (AFB) technologies, will be optimized and evaluated for their scalability and operational safety. Successful project completion will result in initial prototypes of pouch cells, providing valuable insights for the development of applicable cell chemistries.

Project description

In this project, TUB focuses on preparing Si@Gr composite particles through fluidized bed granulation with the goal of enhancing anode capacity by incorporating higher Si content (>20 wt. % Si). The focus of the project will be on the development and optimization of polymeric artificial solid electrolyte interface coatings (ASEIs) for nSi@G composite particles. These coatings are designed to improve the stability, conductivity, and overall electrochemical properties of the Si@Gr composite particles. Additionally, the project developing the functional coatings for Ni-rich NCM cathodes. Coated Ni-rich NCM particles will be integrated into the extrusion process, and the project will assess the benefits of coated Ni-rich NCM cathodes in terms of rate capability and long-term cycling performance. The project also involves assessing the compatibility of anodes and cathodes within the specific design and chemistry of polymer solid-state batteries, addressing performance, efficiency, and safety aspects when integrated into such battery systems.

Contact:

Nathiya Kalidas
nathiya.kalidas(at)tu-braunschweig.de