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High Crystalline Prussian White Nanocubes as a Promising Cathode for Sodium-ion Batteries

Journal Article


Abstract


  • Prussian blue and its analogues (PBAs) have been recognized as one of the most promising cathode materials for room-temperature sodium-ion batteries (SIBs). Herein, we report high crystalline and Na-rich Prussian white Na2CoFe(CN)6 nanocubes synthesized by an optimized and facile co-precipitation method. The influence of crystallinity and sodium content on the electrochemical properties was systematically investigated. The optimized Na2CoFe(CN)6 nanocubes exhibited an initial capacity of 151 mA h g−1, which is close to its theoretical capacity (170 mA h g−1). Meanwhile, the Na2CoFe(CN)6 cathode demonstrated an outstanding long-term cycle performance, retaining 78 % of its initial capacity after 500 cycles. Furthermore, the Na2CoFe(CN)6 Prussian white nanocubes also achieved a superior rate capability (115 mA h g−1 at 400 mA g−1, 92 mA h g−1 at 800 mA g−1). The enhanced performances could be attributed to the robust crystal structure and rapid transport of Na ions through large channels in the open-framework. Most noteworthy, the as-prepared Na2CoFe(CN)6 nanocubes are not only low-cost in raw materials but also contain a rich sodium content (1.87 Na ions per lattice unit cell), which will be favorable for full cell fabrication and large-scale electric storage applications.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2018

Citation


  • Li, C., Zang, R., Li, P., Man, Z., Wang, S., Li, X., . . . Wang, G. (2018). High Crystalline Prussian White Nanocubes as a Promising Cathode for Sodium-ion Batteries. Chemistry - An Asian Journal, 13(3), 342-349. doi:10.1002/asia.201701715

Scopus Eid


  • 2-s2.0-85040721204

Start Page


  • 342

End Page


  • 349

Volume


  • 13

Issue


  • 3

Abstract


  • Prussian blue and its analogues (PBAs) have been recognized as one of the most promising cathode materials for room-temperature sodium-ion batteries (SIBs). Herein, we report high crystalline and Na-rich Prussian white Na2CoFe(CN)6 nanocubes synthesized by an optimized and facile co-precipitation method. The influence of crystallinity and sodium content on the electrochemical properties was systematically investigated. The optimized Na2CoFe(CN)6 nanocubes exhibited an initial capacity of 151 mA h g−1, which is close to its theoretical capacity (170 mA h g−1). Meanwhile, the Na2CoFe(CN)6 cathode demonstrated an outstanding long-term cycle performance, retaining 78 % of its initial capacity after 500 cycles. Furthermore, the Na2CoFe(CN)6 Prussian white nanocubes also achieved a superior rate capability (115 mA h g−1 at 400 mA g−1, 92 mA h g−1 at 800 mA g−1). The enhanced performances could be attributed to the robust crystal structure and rapid transport of Na ions through large channels in the open-framework. Most noteworthy, the as-prepared Na2CoFe(CN)6 nanocubes are not only low-cost in raw materials but also contain a rich sodium content (1.87 Na ions per lattice unit cell), which will be favorable for full cell fabrication and large-scale electric storage applications.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2018

Citation


  • Li, C., Zang, R., Li, P., Man, Z., Wang, S., Li, X., . . . Wang, G. (2018). High Crystalline Prussian White Nanocubes as a Promising Cathode for Sodium-ion Batteries. Chemistry - An Asian Journal, 13(3), 342-349. doi:10.1002/asia.201701715

Scopus Eid


  • 2-s2.0-85040721204

Start Page


  • 342

End Page


  • 349

Volume


  • 13

Issue


  • 3