Advanced Energy Materials
Wearable Pseudocapacitors: Novel Sub‐5 nm Layered Niobium Phosphate Nanosheets for High‐Voltage, Cation‐Intercalation Typed Electrochemical Energy Storage in Wearable Pseudocapacitors
Zeyi Wu, Le Jiang, Wenchao Tian, Yanan Wang, Yingchang Jiang, Qinfen Gu, Linfeng Hu
In article number 1900111, Linfeng Hu and co‐workers find that layered acid niobium phosphate (2NbOPO4·H3PO4·H2O) can be well crystallized into a two‐dimensional morphology with a typical layered crystal structure in a mild oxalic acid system. Unilamellar nanosheets are manufactured by a liquid‐exfoliation strategy from the bulk 2NbOPO4·H3PO4·H2O. This novel compound exhibits a wide potential window of 0–1.0 V in aqueous electrolyte (vs Ag/AgCl electrode) with a proton‐intercalation mechanism.