Figure 1From: Hierarchical mesoporous nickel cobaltite nanoneedle/carbon cloth arrays as superior flexible electrodes for supercapacitorsCrystallographic structure and the crystallographic phase of NiCo 2 O 4 with the spinel structure. (a) Crystal structure of NiCo2O4. (b) XRD pattern of the NiCo2O4 nanoneedle arrays.Back to article page