Issue 14, 2017

Long life and high-rate Berlin green FeFe(CN)6 cathode material for a non-aqueous potassium-ion battery

Abstract

A high-quality sized FeFe(CN)6 was synthesized as a cathode material for a non-aqueous potassium-ion battery. The electrode delivered a reversible capacity of 124 mA h g−1 at the current rate of 0.5C and still retained a reversible capacity of 93 mA h g−1 after 500 cycles at 5C with a columbic efficiency of 100%. Structural evolution and redox couples of low and high spin FeIII/FeII were investigated by ex situ X-ray diffraction, Mössbauer spectroscopy, and X-ray photoelectric spectroscopy. The negligible volume change during the electrochemical process should be responsible for the excellent cyclic stability.

Graphical abstract: Long life and high-rate Berlin green FeFe(CN)6 cathode material for a non-aqueous potassium-ion battery

Supplementary files

Article information

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

J. Mater. Chem. A, 2017,5, 6393-6398

Long life and high-rate Berlin green FeFe(CN)6 cathode material for a non-aqueous potassium-ion battery

Z. Shadike, D. Shi, Tian-Wang, M. Cao, S. Yang, J. Chen and Z. Fu, J. Mater. Chem. A, 2017, 5, 6393 DOI: 10.1039/C7TA00484B

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