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Characterization of CoSx/NS-G hybrids. (A) TEM image and corresponding HRTEM image (Inset) of CoS2/NS-G. (B) Elemental mapping images of the CoS2/NS-G hybrid. High-resolution XPS spectra of Co 2p (C) and S 2p (D) for the CoS2/NS-G and CoS/NS-G hybrid products.
