Self-induced cobalt-derived hollow structure Prussian blue as a cathode for sodium-ion batteries

Abstract

By using Fe3[Co(CN)6]2 as a precursor, hollow structured Prussian blue can be synthesized via anion exchange methods without any other additive.

Y-tube assisted coprecipitation synthesis of iron-based Prussian blue analogues cathode materials for sodium-ion batteries

“… 60 The Raman peaks observed around 2131 and 2094 cm −1 are generated by the vibrations of Fe III –CN and Fe II –CN, respectively, in the Prussian blue structure. 61 Fig. 2(b) presents the Raman spectroscopy results for five groups of Fe–PBAs samples.…”

“…58,64,65 Subsequently, as the temperature increases further, NaFeHCF undergoes thermal decomposition. 60,61 Based on the TG result, the calculated crystal water (from 100 °C to 250-270 °C) contents for C-PB-0.3, Y-PB-0.3, Y-PB-15, Y-PB-30, and Y-PB-41 are 15.15%, 14.39%, 13.59%, 13.88%, and 14.59%, respectively. The use of a Y-tube during the synthesis process has led to a reduction in the water content of the crystals, and an appropriate increase in feed ow rate results in a further decrease in water content.…”

Recent progress in high-voltage P2-NaxTMO2 materials and their future perspectives

“…Cathode materials profoundly affect the prime costs and capability of SIBs; therefore, researching and developing lowcost and long-life cathode materials is crucial for the development of SIBs. Such cathode materials include layered transition metal oxides (LTMOs), [1][2][3][4][5][6][7][8][9][10] tunnel-type oxides, [11][12][13][14][15][16][17][18][19][20] iron-uorinebased Prussian blue analogues (PBAs) 9,10,[21][22][23][24][25][26][27][28][29] and polyanionic compounds. 10,[30][31][32][33][34][35][36][37][38][39][40] Among these, LTMOs have a higher specic capacity and energy density (Table 1).…”

Reforming Magnet Waste to Prussian Blue for Sustainable Sodium-Ion Batteries

“…In a recent study, high-quality PBA lattices with high retention capacity and excellent rate capability were fabricated as cathode materials for SIBs, such as Na 2 MnFe(CN) 6 35 and Na 2 CoFe(CN) 6 . 36 According to a literature survey, to date, no reports are available on the use of Nd−Fe−B waste for the synthesis of PBAs for cathode materials, which resolves two issues of waste management and large-scale EES simultaneously. Taking into account the resources, environment, economy, and high-yield factors, if iron ions in Nd−Fe−B acid leaching waste liquor could be directly converted into PBAs in a convenient way, this would be a novel idea for the future development of cathode materials for energy storage devices.…”

“…Their two-electron redox reactions can improve the theoretical specific capacity of PBAs. , In addition, PBAs can be synthesized via a simple co-precipitation reaction of transition-metal cations and hexacyanoferrate anions. In a recent study, high-quality PBA lattices with high retention capacity and excellent rate capability were fabricated as cathode materials for SIBs, such as Na 2 MnFe­(CN) 6 and Na 2 CoFe­(CN) 6 . According to a literature survey, to date, no reports are available on the use of Nd–Fe–B waste for the synthesis of PBAs for cathode materials, which resolves two issues of waste management and large-scale EES simultaneously.…”