High-voltage honeycomb layered oxide positive electrodes for rechargeable sodium batteries
Chih-Yao Chen, Josef Rizell, Godwill Mbiti Kanyolo, Titus Masese, Yasmine Sassa, Martin Månsson, Keigo Kubota, Kazuhiko Matsumoto, Rika Hagiwara, Qiang Xu
Abstract
Honeycomb layered oxides from Na2Ni2-xCoxTeO6 family were assessed for use as positive electrodes in rechargeable sodium batteries at ambient and elevated temperatures using ionic liquids. Substitution of nickel with cobalt increases the discharge voltage to nearly 4 V (versus Na+/Na), surpassing the average voltages of most Na based layered oxide positive electrodes.
Topics & Concepts
Materials scienceElectrodeSodiumOxideHoneycombCobaltCobalt oxideHoneycomb structureChemical engineeringNickelIonic bondingVoltageInorganic chemistryNickel oxideTransition metalNanoarchitectures for lithium-ion batteriesLithium (medication)Advancements in Battery MaterialsAdvanced Battery Materials and TechnologiesThermal Expansion and Ionic Conductivity