Disordered Rocksalt (DRX) Cathodes for Li-ion Batteries
High-entropy materials typically contain multiple principal elements in near-equiatomic proportions, leading to a high degree of disorder and unique properties.1,2 We apply the high-entropy concept to DRX structures, significantly expanding this promising class of materials. By incorporating a wide variety of elements into the DRX framework, we leverage the high configurational entropy to enhance the stability and electrochemical performance of these materials.
In addition to compositional advancements, we are exploring energy-efficient synthesis routes like microwave-assisted solid-state reactions and ultra-fast synthesis methods. Our research is committed to producing high-performance DRX cathodes more sustainably and economically.
Selected publications:
Zhou, Bei; An, Siyu; Kitsche, David; Dreyer, Sören L.; Wang, Kai; Huang, Xiaohui; Thanner, Jannik; Bianchini, Matteo; Brezesinski, Torsten; Breitung, Ben; Hahn, Horst; Wang, Qingsong*
Improved Performance of High‐Entropy Disordered Rocksalt Oxyfluoride Cathode by Atomic Layer Deposition Coating for Li‐Ion Batteries. Small Structures, (2024), 2400005.
Breitung, Ben*; Wang, Qingsong; Schiele, Alexander; Tripković, Đorđije; Sarkar, Abhishek; Velasco, Leonardo; Wang, Di; Bhattacharya, Subramshu S.; Hahn, Horst; Brezesinski, Torsten*
Gassing Behavior of High‐Entropy Oxide Anode and Oxyfluoride Cathode Probed Using Differential Electrochemical Mass Spectrometry. Batter. Supercaps. (2020) 1–10.
Wang, Qingsong*; Sarkar, Abhishek; Wang, Di; Velasco, Leonardo; Azmi, Raheleh; Bhattacharya, Subramshu S.; Bergfeldt, Thomas; Düvel, Andre; Heitjans, Paul; Brezesinski, Torsten; Hahn, Horst*; Breitung, Ben*
Multi-Anionic and -Cationic Compounds: New High Entropy Materials for Advanced Li-ion Batteries. Energy Environ. Sci. 12 (2019) 2433–2442.