Sodium Dual-Ion Batteries with Concentrated Electrolytes.
Zhenyu Guo, Gang Cheng, Zhen Xu, Fei Xie, Yong-Sheng Hu, Cecilia Mattevi, Maria-Magdalena Titirici, Maria Crespo Ribadeneyra
Author Information
Zhenyu Guo: Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom.
Gang Cheng: Department of Materials, Imperial College London, London, SW7 2AZ, United Kingdom.
Zhen Xu: Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom.
Fei Xie: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Yong-Sheng Hu: Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Cecilia Mattevi: Department of Materials, Imperial College London, London, SW7 2AZ, United Kingdom.
Maria-Magdalena Titirici: Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom. ORCID
Maria Crespo Ribadeneyra: Department of Chemical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom.
Na-based dual-ion batteries (DIBs) are a class of post-lithium technology with advantages including extremely fast charging, cost-effectiveness, and high natural abundance of raw materials. Operating up to high voltages (≈5.0 V), the decomposition of classic carbonate-based electrolyte formulations and the subsequent fade of capacity continues to be a major drawback in the development of these systems. Here, the performance of a Na-DIB was investigated in different commonly employed electrolyte system, and a highly concentrated (3 m NaPF ) and fluorine-rich carbonate-based formulation was optimized to achieve a good performance when compared with literature (based on energy and power density, calculated at coin cell and only using the active mass of active materials).
