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• W2947651503 endingPage "20853" @default.
• W2947651503 startingPage "20845" @default.
• W2947651503 abstract "Composites of polyoxometalate (POM)/metallacalixarene/graphene-based electrode materials not only integrate the superiority of the individual components perfectly but also ameliorate the demerits to some extent, providing a promising route to approach high-performance supercapacitors. Herein, first, we report the preparations, structures, and electrochemical performance of two fascinating POM-incorporated metallacalixarene compounds [Ag5(C2H2N3)6][H5 ⊂ SiMo12O40] (1) and [Ag5(C2H2N3)6][H5 ⊂ SiW12O40] (2); (C2H2N3 = 1 H-1,2,4-triazole). Single-crystal X-ray diffraction analyses illustrated that both 1 and 2 possess intriguing POM-sandwiched metallacalix[6]arene frameworks. Nevertheless, our investigations, including the electrochemical cyclic voltammetry, galvanostatic charge-discharge tests, and electrochemical impedance spectroscopy, reveal that the oxidation ability of the Keggin ions is a primary effect in electrochemical performance of these POM-incorporated metallacalixarene compounds. Namely, the electrodes containing Mo as metal atoms in the Keggin POM shows much higher capacitance than the corresponding W-containing ones. Moreover, compound 1@graphene oxide (GO) composite electrodes are fabricated and systematically explored for their supercapacitor performance. Thanks to the synergetic effects of GO and POM-incorporated metallacalixarenes, the compound 1@15%GO-based electrode exhibits the highest specific capacitance of up to 230.2 F g-1 (current density equal to 0.5 A g-1), which is superior to majority of the reported POM-based electrode materials." @default.
• W2947651503 created "2019-06-07" @default.
• W2947651503 creator A5014587726 @default.
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• W2947651503 creator A5087343432 @default.
• W2947651503 date "2019-05-22" @default.
• W2947651503 modified "2023-10-18" @default.
• W2947651503 title "Polyoxometalate-Incorporated Metallacalixarene@Graphene Composite Electrodes for High-Performance Supercapacitors" @default.
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• W2947651503 doi "https://doi.org/10.1021/acsami.9b04649" @default.
• W2947651503 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31117450" @default.
• W2947651503 hasPublicationYear "2019" @default.
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