P3-type layered K0.48Mn0.4Co0.6O2: a novel cathode material for potassium-ion batteries. Issue 15 (27th January 2020)

• Record Type: Journal Article
• Authors: Sada, Krishnakanth; Barpanda, Prabeer
• Is Part Of: Chemical communications. Volume 56:Issue 15(2020)
• Page Start: 2272
• Page End: 2275
• Publication Date: 2020-01-27
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc06657h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A P3-type K0.48 Mn0.4 Co0.6 O2 oxide forms a 3 V economical cathode for potassium-ion batteries, having a discharge capacity of 64 mA h g −1 coupled with excellent cycling stability. Abstract : P3-type layered K0.48 Mn0.4 Co0.6 O2 was synthesized using a solid-state method. By stabilising into a rhombohedral structure [s.g. R 3 m (#160)], it delivers a reversible capacity of 64 mA h g −1 with a nominal voltage of ∼3.0 V ( vs. K/K + ) and it has good cycling stability. It involves a solid-solution redox mechanism, and forms an economical and stable oxide insertion material for potassium-ion batteries.