1 research outputs found
Rhombohedral Prussian White as Cathode for Rechargeable Sodium-Ion Batteries
A novel
air-stable sodium iron hexacyanoferrate (R-Na<sub>1.92</sub>FeÂ[FeÂ(CN)<sub>6</sub>]) with rhombohedral structure is demonstrated
to be a scalable, low-cost cathode material for sodium-ion batteries
exhibiting high capacity, long cycle life, and good rate capability.
The cycling mechanism of the iron redox is clarified and understood
through synchrotron-based soft X-ray absorption spectroscopy, which
also reveals the correlation between the physical properties and the
cell performance of this novel material. More importantly, successful
preparation of a dehydrated iron hexacyanoferrate with high sodium-ion
concentration enables the fabrication of a discharged sodium-ion battery
with a non-sodium metal anode, and the manufacturing feasibility of
low cost sodium-ion batteries with existing lithium-ion battery infrastructures
has been tested