Abstract
AbstractA nanocomposite of carbonaceous aerogel (CA) supported by modified MnO2 nanoparticles with ferrocene (Fc) moiety (MnO2‐Fc/CA) was prepared by a simple and environmentally friendly approach in two steps. In the first step, a porous carbon‐based material was synthesized using watermelon as a starting material. Then, 5‐ferrocenylpentanoic acid was covalently grafted onto the α‐MnO2 surface through hydrothermal route, and finally, MnO2‐Fc/CA was obtained by simply physically mixing MnO2‐Fc and CA in acetone. After thorough characterization of as‐prepared nanomaterial via appropriate analyses, the MnO2‐Fc/CA nanocomposite reveals excellent electrochemical performances (Cs value: 963 F g−1 at 1 A g−1) and outstanding cycling stability (~96% after 3000 CV cycles). Moreover, the constructed symmetric cell reveals a high‐energy density of 38.1 Wh kg−1 and a high‐power density of 4556 W kg−1. The final high‐performance nanocomposite is a very favorable candidate for energy storage applications.
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