Issue 26, 2017

P2- and P3-KxCoO2 as an electrochemical potassium intercalation host

Abstract

Reversible and topotactic potassium intercalation of P2- and P3-KxCoO2 electrodes is studied in non-aqueous K cells for the first time. They deliver a highly reversible capacity of 60 mA h g−1 in the voltage range 2.0–3.9 V accompanied by reversible phase transitions including potassium/vacancy orderings. The electrochemical properties and structural change of P2-KxCoO2 are compared to those of O2-LixCoO2 and P2-NaxCoO2.

Graphical abstract: P2- and P3-KxCoO2 as an electrochemical potassium intercalation host

Supplementary files

Article information

Article type
Communication
Submitted
30 Jan 2017
Accepted
06 Mar 2017
First published
07 Mar 2017

Chem. Commun., 2017,53, 3693-3696

P2- and P3-KxCoO2 as an electrochemical potassium intercalation host

Y. Hironaka, K. Kubota and S. Komaba, Chem. Commun., 2017, 53, 3693 DOI: 10.1039/C7CC00806F

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