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- W2990996848 abstract "In this work, multilayer networks lanthanum-doped V2O5·nH2[email protected] (noted as [email protected]) binder-free thin film positive electrode has been first successfully synthesized via a simple and economical sol-gel and drop-coating methods. Benefiting from its unique architecture and the favorable synergetic contributions for rare earth metal ions of La3+ and hydrophilic carbon of OAB, after the condition optimization, the 20%[email protected] exhibits an excellent electrochemical performance with an ultrahigh specific capacitance of 612 F g−1 at a current density of 1 A g−1, good rate capability (81.1%, the current density increases tenfold) and outstanding cycling stability (90.4% capacitance retention over 2000 cycles). In addition, flexible Fe2O3@rGO binder-free thin film negative electrode prepared with the similarly facile strategy demonstrates a high specific capacitance of 366 F g−1 due to Fe2O3 nanoparticles tightly anchored on the rGO surface. The assembled 20%[email protected]//Fe2O3@rGO ASCs device within a voltage window of 1.7 V delivers a relatively high specific energy density of 56.3 Wh kg−1 at a power density of 849.9 W kg−1 with exceptional cycling stability (81.3% capacitance retention after 5000 cycles), moreover, two ASCs devices in parallel can light up a red LED for 3 min, demonstrating its potential in practical applications. This work provides a certain reference for the fabrication of environmentally friendly thin film electrodes for developing high efficient energy storage systems." @default.
- W2990996848 created "2019-12-05" @default.
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- W2990996848 date "2020-06-01" @default.
- W2990996848 modified "2023-10-16" @default.
- W2990996848 title "La-doped V2O5·nH2O@OAB and flexible Fe2O3@rGO as binder-free thin film electrodes for asymmetric supercapacitors" @default.
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- W2990996848 doi "https://doi.org/10.1016/j.cej.2019.123534" @default.
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