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. 2016 Apr 1;6:23699. doi: 10.1038/srep23699

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Nyquist plots of the hollow nanosphere FeSe₂@GC–rGO hybrid, nanorod FeSe₂–rGO–AC hybrid, and bare FeSe₂ nanofibers: (a) before cycling, (b) after cycling of the hollow nanosphere FeSe₂@GC–rGO hybrid nanofibers, (c) after cycling of the nanorod FeSe₂–rGO–AC hybrid nanofibers, and (d) after cycling of the bare FeSe₂ nanofibers.