Layered V-MOF nanorods for rechargeable aqueous zinc-ion batteries

Metal–organic frameworks (MOFs) have attracted great attention owing to their controllable morphologies, adjustable aperture, and large specific surface areas. Here, a typical V-MOF (MIL-47) product is successfully synthesized via a one-step hydrothermal method, which is explored to have a one-dimensional layered nanorod-like framework. From a microcosmic point of view, such a V-MOF product is equipped with a rhomboid structure with a large number of empty channels, which is beneficial for guest ions freely inserting in and extracting from the structure. Hence, the V-MOF product is utilized as the cathode material for the aqueous MOF-Zn battery, which exhibits a high initial specific capacity of 320 mA h/g at 0.1 A/g, and a desirable rate capability and cycling performance.