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A facile twice-hydrothermal method is developed for large-scale growth of NiCo2S4 nanotube array on Ni foam with robust adhesion. As-prepared materials are characterized by SEM, XRD and EDS. It can be observed that NiCo2S4 nanotubes directly grow on Ni foam with an average inner-diameter of ∼55nm, external-diameter of 100nm, and length of ∼2μm. When evaluated as a binder-free anode for LIBs, NiCo2...
MnO 2 is electrodeposited onto ZnO nanorod array grown on Ni foil, forming a binder-free ZnO/MnO 2 composited electrode. XRD, EDS, SEM and TEM are used to analyze the phase and microstructure of this composite. Burr-like MnO 2 nanoflakes grows on ZnO nanorod array, the top of the composite is hollow and at the bottom exists ZnO large block core as an internal support, forming...
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