Our country's research team has made significant progress in the development of high-performance sodium-ion battery cathode materials.

Recently, the team led by Researcher Zhao Bangchuan from the Institute of Solid State Physics of the Hefei Institutes of Physical Science, Chinese Academy of Sciences, made significant progress in the development of sodium-ion battery cathode materials. The team achieved rapid sodium ion transport and excellent cycle stability in vanadium-manganese-phosphate sodium cathode materials through a synergistic modification strategy of "both internal and external repair" using "bond structure regulation + interface modification". The research results were published in Advanced Functional Materials. Test results showed that the modified Na3.91MnV0.97Mo0.033@Al2O3 exhibited an initial discharge capacity of 99.3 mAh g- at a 0.1C rate, and even after 3000 cycles at a high rate of 10C, the capacity retention rate remained as high as 84.5%, far exceeding unmodified materials and other reported NASICON-type cathode materials. Further analysis confirmed that the volume change of the modified material during charging and discharging processes was only 3.66%, demonstrating extremely high structural reversibility and stability. This work not only laid a solid experimental and technical foundation for the practical application of NMVP cathodes, but also provided inspiration for the design of other poly-anion electrode materials, making a positive contribution to the development of high stability, long-life sodium-ion batteries.