Hierarchical ZnO@nitrogen doped carbon hybrid derived from metal-organic frameworks via mechanochemistry technique for high performance sodium storage

Abstract

Figure S1: The optical photograph of ZIF-8 precursor. Figure S2: XRD pattern of ZIF-8 precursor. Figure S3: The galvanostatic charge/discharge profiles for 1st, 2nd, 3rd and 100th of (a) ZnO@NC-600, (b) ZnO@NC-700 and (c) ZnO@NC-800. Figure S4: SEM of ZnO@NC-700 after 100 cycles.