Affiliation:
1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University Shanghai 200433 P. R. China
2. College of Chemistry and Chemical Engineering Qinghai Normal University Xining 810016 P. R. China
3. Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 P. R. China
Abstract
AbstractSodium (Na)‐ion batteries (SIBs) have been considered as a potential device for large‐scale energy storage. To date, some start‐up companies have released their first‐generation SIBs cathode materials. Among them, phosphate compounds, particularly iron (Fe)‐based mixed phosphate compounds, present great potential for commercial SIBs owing to its low cost, environment friendly. In this perspective, a brief historical retrospect is first introduce to the development of Fe‐based mixed phosphate cathodes in SIBs. Then, the recent development about this kind of cathode has been summarized. One of the iron‐based phosphate materials, Na3Fe2(PO4)P2O7, is used as an example to roughly calculate the energy density and estimate the cost at the cell level to highlight their advantages. Finally, some strategies are put up to further increase the energy density of SIBs. This timely perspective aims to educate the community on the critical benefits of the Fe‐based mixed phosphate cathode and provide an up‐to‐date overview of this emerging field.
Funder
National Natural Science Foundation of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry