Elaborating the Crystal Water of Prussian Blue for Outstanding Performance of Sodium Ion Batteries

Prussian blue (PB) is one of the main cathode materials with industrial prospects for the sodium ion battery. The structural stability of PB materials is directly associated with the presence of crystal water within the open 3D framework. However, there remains a lack of consensus regarding whether all forms of crystal water have detrimental effects on the structural stability of the PB materials. Currently, it is widely accepted that interstitial water is the stability troublemaker, whereas the role of coordination water remains elusive. In this work, the dynamic evolution of PB structures is investigated during the crystal water (in all forms) removal process through a variety of online monitoring…

• NN
  National Natural Science Foundation of China

  Awards: 52277229, 22109178
• NS
  Natural Science Foundation of Shandong Province

  Award: ZR2021QB085
• NK
  National Key Research and Development Program of China

  Award: 2022YFA1503402
• FR
  Fundamental Research Funds for the Central Universities

  Award: 2462023QNXZ015