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The hybrid electrode material of carbon fiber and vanadium nitride (CF@VN) is fabricated from waste metal ions absorbed on the recycled cigarette butts under the mixed atmosphere of NH3 and N2 at 800°C for supercapacitors. The microstructures and morphologies of CF@VN are characterized by X-ray diffraction, scanning electron microscopy, and BET methods; and the electrochemical properties are investigated...
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