“…In contrast, sphere/brush-like structures with a loose and orderly assembly way presented more obvious CV redox peaks and GCD discharge platforms, revealing a higher utilization of active materials from the increased contribution of diffusion-controlled faradaic reactions in the inner part of the electrode, and thus they had larger capacity. 110 Moreover, NCSs and their composites are commonly in situ grown on planar substrates ( e.g. , carbon cloth, Ni foam and metal meshes), and they usually show clear battery-like behavior, 58,81 but when the planar substrates are changed into ultrathin metal wires with a diameter on a scale of tens of micrometers and a high aspect ratio (Fig.…”