Layered oxides cathodes for Na-ion batteries
The cathode, as the critical component determining the energy density and cost, needs further improvement and has received tremendous research attention. Our current research focuses on P2-type layered oxide cathode, which has a high operating voltage and enables fast Na ions mobility.
We explore the impact of high configurational entropy (high entropy oxides) on long-term stability. Additionally, efforts are placed on investigating the capacity provided by anionic redox reaction in addition to the charge stored on transition metals. This approach is emerging as a leverage to boost the capacity and energy density of layered oxides cathodes and promote the practical application of Na-ion batteries.
Selected publications:
Bei Zhou, Deniz Wong, Zhongheng Fu, Hao Guo, Christian Schulz, Guruprakash Karkera, Horst Hahn, Matteo Bianchini, and Qingsong Wang*
K-Doping Suppresses Oxygen Redox in P2-Na0.67Ni0.11Cu0.22Mn0.67O2 Cathode Materials for Sodium-ion Batteries (Small, accepted)
Wang, Xiaotong; Zhang, Qinghua; Zhao, Chen; Li, Haifeng; Zhang, Baodan; Zeng, Guifan; Tang, Yonglin; Huang, Zhongyuan; Hwang, Inhui; Zhang, Haitang; Zhou, Shiyuan; Qiu, Yongfu; Xiao, Yinguo; Cabana, Jordi; Sun, Cheng-Jun; Amine, Khalil; Sun, Yang*; Wang, Qingsong*; Xu, Gui-Liang*; Gu, Lin*; Qiao, Yu*; Sun, Shi-Gang
Achieving a high-performance sodium-ion pouch cell by regulating intergrowth structures in a layered oxide cathode with anionic redox. Nat Energy. 9 (2024) 184–196.
Tang, Yonglin; Zhang, Qinghua; Zuo, Wenhua; Zhou, Shiyuan; Zeng, Guifan; Zhang, Baodan; Zhang, Haitang; Huang, Zhongyuan; Zheng, Lirong; Xu, Juping; Yin, Wen; Qiu, Yongfu; Xiao, Yinguo; Zhang, Qiaobao; Zhao, Tiqing; Liao, Hong-Gang; Hwang, Inhui; Sun, Cheng-Jun; Amine, Khalil; Wang, Qingsong*; Sun, Yang*; Xu, Gui-Liang*; Gu, Lin*; Qiao, Yu*; Sun, Shi-Gang
Sustainable layered cathode with suppressed phase transition for long-life sodium-ion batteries. Nature Sustainability, 7 (2024) 348–359.
Dreyer, Sören L.; Zhang, Ruizhuo; Wang, Junbo; Kondrakov, Aleksandr; Wang, Qingsong*; Brezesinski, Torsten*; Janek, Jürgen
The effect of configurational entropy on acoustic emission of P2-type layered oxide cathodes for sodium-ion batteries. J. Phys. Energy 5 (2023) 035002.
Wang, Junbo; Dreyer, Sören L.; Wang, Kai; Ding, Ziming; Diemant, Thomas; Karkera, Guruprakash; Ma, Yanjiao; Sarkar, Abhishek; Zhou, Bei; Gorbunov, Mikhail V.; Omar, Ahmad; Mikhailova, Daria; Presser, Volker; Fichtner, Maximilian; Hahn, Horst; Brezesinski, Torsten; Breitung, Ben; Wang, Qingsong*
P2-type layered high-entropy oxides as sodium-ion cathode materials. Materials Futures, 1 (2022) 035104.