Fig. 5From: Cobalt Oxide Porous Nanofibers Directly Grown on Conductive Substrate as a Binder/Additive-Free Lithium-Ion Battery Anode with High CapacitySEM image taken from the CoO anode after 130 cycling test. An enlarged SEM image and size distribution of the nanofiber diameters are shown in inset of Fig. 2aBack to article page