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The eco‐friendliness, safety, and affordability of aqueous potassium batteries (AKIBs) have made them popular for large‐scale energy storage devices. However, the cycling and rate performance of research materials, particularly cobalt hexacyanoferrate, have yet to meet satisfactory standards. Herein, a room‐temperature drafted K1.66Fe0.25Co0.75[Fe(CN)6]·0.83H2O (KFCHCF) sample is reported using an...
Aqueous zinc ion batteries (ZIBs), especially those with self‐charging properties, have been promisingly developed in recent years. Yet, most inorganic materials feature high redox potential, which limit their development in the self‐charging field. To achieve this target, by pre‐embedding potassium ions into δ‐MnO2 to reduce the energy barrier in oxygen adsorption, the first application of MnO2 in...
The Mott–Schottky heterojunction formed at the interface of ultrafine metallic Ni and semiconducting V2O3 nanoparticles is constructed, and the heterojunctions are “knitted” into the tulle‐like monolayer nanosheets on nickel foam (NF). The greatly reduced particle sizes of both Ni and V2O3 on the Mott–Schottky heterojunction highly enhance the number of Schottky heterojunctions per unit area of the...
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