Figure 2

SEM images of (a) Carbon fabric; (b) CoMoO₄ NWs on carbon fabric. (c) NiMoO₄·xH₂O NSs on carbon fabric. (d–f) Flexible CoMoO₄@NiMoO₄·xH₂O core-shell heterostructures taken at different magnifications. The insets are the high magnification SEM images. (g–i) SEM images of the CoMoO₄@NiMoO₄·xH₂O at different reaction times from 1 h to 10 h.