This project aims to improve the efficiency of alkali metal ion batteries through the targeted further development of the anode material. To this end, innovative hydrogen-containing amorphous carbon layers (a-C:H:X layers) are being developed, which are doped with X = nitrogen (N), oxygen (O), or a combination of both (N/O). These layers are deposited on structured or unstructured metal foils or foams using high-frequency plasma-activated chemical vapor deposition (rf-PECVD). 

By using hydrocarbon-containing precursors as process gases and through the targeted combination of nitrogen and oxygen in the doping process, the material properties can be precisely controlled. Doping increases conductivity, improves wettability, and stabilizes the carbon structure, resulting in a completely new type of anode material. The aim of the materials developed in this way is to overcome the disadvantages of conventional carbon anodes, such as limited capacity and low cycle stability, and to enable batteries with higher storage capacity, longer service life, and increased efficiency. By using cost-effective and sustainable materials, the project aims to contribute to the development of high-performance and environmentally friendly alkali metal ion batteries that can meet the increasing demands of modern energy storage solutions.

Acknowledgement

The Invest BW project of the fem Research Institute is funded by the Ministerium für Wirtschaft, Arbeit und Tourismus Baden-Württemberg.