A New Rechargeable Sodium Battery Utilizing Reversible
Topotactic Oxygen Extraction/Insertion of CaFeO<sub><i>z</i></sub> (2.5 ≤ <i>z</i> ≤ 3) in an Organic
Electrolyte
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Abstract
At present, significant research
efforts are being devoted both
to identifying means of upgrading existing batteries, including lithium
ion types, and also to developing alternate technologies, such as
sodium ion, metal–air, and lithium–sulfur batteries.
In addition, new battery systems incorporating novel electrode reactions
are being identified. One such system utilizes the reaction of electrolyte
ions with oxygen atoms reversibly extracted and reinserted topotactically
from cathode materials. Batteries based on this system allow the use
of various anode materials, such as lithium and sodium, without the
requirement to develop new cathode intercalation materials. In the
present study, this concept is employed and a new battery based on
a CaFeO<sub>3</sub> cathode with a sodium anode is demonstrated