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

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Journal Article
Advanced materials (Deerfield Beach, Fla.), 2017, 29 (1)
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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.
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