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- W4296234435 abstract "The development of green and inexpensive carbon materials with high electrochemical performance and good stability as electrode material in supercapacitor applications remains a great challenge. In this work, we report a novel type of Mn/Cu bimetal-decorated biomass porous carbons ([email protected]) prepared from an agricultural waste (peanut shell) to realize the combination of the double-layer capacitance of porous carbon materials and pseudocapacitance of metal compounds. The obtained carbon samples exhibit unique micro-mesoporous features with large surface area, and Mn/Cu nano strip structures are successfully decorated in the carbon matrix. The Mn/Cu nanostructures are mainly composed of CuO, MnO2 and CuMn2O4, all of which are excellent pseudocapacitor electrode materials. Using as the electrode material, a high specific capacitance of 632 F/g was obtained by [email protected] at a current density of 1 A/g in the three-electrode system with an excellent cycle life of 90 % capacitance retention after 10,000 cycles. Besides, [email protected]u-X samples were also used as electrodes to assemble asymmetric supercapacitors, which successfully lit up a light-emitting diode. [email protected]//AC exhibited the longest endurance among the three asymmetric capacitors, and its energy density reached 15.62 W h/kg at a power density of 625 W/kg." @default.
- W4296234435 created "2022-09-18" @default.
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- W4296234435 date "2022-11-01" @default.
- W4296234435 modified "2023-10-18" @default.
- W4296234435 title "Manganese/copper bimetal-decorated biomass porous carbons as advanced electrode materials for high-performance supercapacitors" @default.
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- W4296234435 doi "https://doi.org/10.1016/j.est.2022.105636" @default.
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