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High‐Capacity Aqueous Potassium‐Ion Batteries for Large‐Scale Energy Storage
Author(s) -
Su Dawei,
McDonagh Andrew,
Qiao ShiZhang,
Wang Guoxiu
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201604007
Subject(s) - materials science , electrochemistry , cathode , energy storage , aqueous solution , electrolyte , potassium , battery (electricity) , potassium ion battery , chemical engineering , nanotechnology , electrode , metallurgy , lithium vanadium phosphate battery , chemistry , organic chemistry , power (physics) , physics , quantum mechanics , engineering
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.