High-Capacity Aqueous Potassium-Ion Batteries for Large-Scale Energy Storage

Dawei Su; Andrew McDonagh; Shi-Zhang Qiao; Guoxiu Wang

doi:10.1002/adma.201604007

High-Capacity Aqueous Potassium-Ion Batteries for Large-Scale Energy Storage

Adv Mater. 2017 Jan;29(1). doi: 10.1002/adma.201604007. Epub 2016 Oct 26.

Authors

Dawei Su¹, Andrew McDonagh¹, Shi-Zhang Qiao², Guoxiu Wang¹

Affiliations

¹ Centre for Clean Energy Technology, Faculty of Science, University of Technology Sydney, Broadway, NSW, 2007, Australia.
² School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia.

PMID: 27781313
DOI: 10.1002/adma.201604007

Abstract

A potassium iron (II) hexacyanoferrate nanocube cathode material is reported, which operates with an aqueous electrolyte to deliver exceptionally high capacities (up to 120 mA h g^-1 ). The cathode material exhibits excellent structural integrity, leading to fast kinetics and highly reversible properties. All of the battery materials are safe, inexpensive, and provide superior high-rate, long-cycle-life electrochemical performance.

Keywords: aqueous potassium-ion batteries; high capacity; large-scale energy storage; potassium iron hexacyanoferrate dihydrate cathodes.