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

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 propert...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2017-01, Vol.29 (1), p.np-n/a
Main Authors: Su, Dawei, McDonagh, Andrew, Qiao, Shi‐Zhang, Wang, Guoxiu
Format: Article
Language:English
Subjects:
Aqueous electrolytes
aqueous potassium‐ion batteries
Cathodes
Electrochemical analysis
Energy storage
high capacity
Iron
large‐scale energy storage
Materials science
Nanostructure
Potassium
potassium iron hexacyanoferrate dihydrate cathodes
Storage batteries
Structural integrity
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Summary: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.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201604007