Towards Novel Generation of Anodes Based on Halide Perovskites for Li-Ion Batteries

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The escalating global energy demands require development of clean energy sources and efficient energy storage systems. In this pursuit, a range of energy storage devices, including batteries, fuel cells, and supercapacitors, have been subject to extensive investigation. At this point, lithium-ion cells have been the dominant choice for portable power storage devices for over 30 years. Despite their many advantages, continuous research is being carried out to improve the performance of the cells. There is a need to search for new battery components including electrodes and electrolytes, assuring higher battery capacity, better safety, and enhanced electrochemical stability range. Critical research area involves understanding and controlling the phenomena at the anode-electrolyte interface where energy storage occurs, and the initiation of degradation takes place. The formation of solid electrolyte interphase (SEI) is a crucial property responsible for ensuring cycling stability and extended thermodynamic stability of organic electrolytes in Li-ion batteries.Metal halide perovskites (MHPs) represent a revolutionary class of compounds that can be used in lithium-ion batteries. While metal halide perovskites are predominantly recognized for their applications in energy conversion, their unique structure allowing fast lithium-ion diffusion has prompted exploration in energy storage. The typical preparation of halide perovskites relies on solution-based methods, yet this approach encounters challenges in both compositional engineering and long-term storage. In this context, solid-state chemical reactions induced by mechanical forces have emerged as an effective and straightforward method for solvent free compositional engineering within a relatively short timeframe [1,2].In this work we present the development of a new generation of electrodes using all-inorganic and hybrid inorganic-organic halide perovskites. Different MHPs have been used as the main active material for high-performance electrodes. Beyond serving as anodes, MHPs have also found application as an electrode additive. In this case, the use of another well-known active material as the head component of the anode and MHPs as an additive involved in the formation of the SEI layer is likely to improve the cyclability, capacity and lifetime of the cell.. Our study includes electrochemical and physicochemical characterisation of electrodes based on carbon materials and tailored halide perovskites with electrolytes containing Hückel-type and fluorine free salts [3,4].Acknowledgments:This research was supported by the National Science Centre (NCN) through grant OPUS-21 no. 2021/41/B/ST5/04450.