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- W2896568073 abstract "Joule heating can instantaneously achieve high temperatures (>2000 °C) by applying electrical current on a resistive material. This ohmic heating by the passage of an electric current through a conducting domain may effectively heal the defective sites (i.e., vacancies, structural defects, and sp3 oxygen groups) of graphene oxide (GO) and revert them into sp2 domains. Indeed, the direction of electric field controls the texture of GO with preferential alignment, which significantly affects the transport properties along the fiber axis. Here we present electrical current-induced manipulation of resistive domain (i.e. Joule heating) as an effective healing method for the defect sites in GO fibers (GOFs). Systematic control of input current restores the sp2 lattice structures within fibers in a well-controlled manner. Structural evolution mechanism is proposed for multilayer stacked graphitic structures as well as graphene sheet plane under the reduction process. This defect-healing principle is rapid, environmentally benign and energy efficient, compared to other defect restoration methods, and yields tailored-aligned fibers with a high current-carrying capability and facile charge transport, which is potentially beneficial for power cables and other relevant applications." @default.
- W2896568073 created "2018-10-26" @default.
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- W2896568073 date "2019-02-01" @default.
- W2896568073 modified "2023-10-14" @default.
- W2896568073 title "Joule heating-induced sp2-restoration in graphene fibers" @default.
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- W2896568073 doi "https://doi.org/10.1016/j.carbon.2018.10.041" @default.
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