MoO2 nanoparticles/carbon textiles cathode for high performance flexible Li-O2 battery

Abstract Conventional Li-O2 battery is hardly considered as a next-generation flexible electronics thus far, since it is inflexible, bulk, and limited by the absence of the adjustable cell configuration. Here, we report a binder-free and flexible electrode of x wt% MoO2 NPs/CTs (x = 6, 16, and 28). A cell with 16 wt% MoO2 NPs/CTs displays a good cyclability over 240 cycles with a low overpotential of 0.33 V on the 1st cycle at a constant current density of 0.2 mA cm−2, a considerable rate performance, a superior reversibility associated with the desired formation and degradation of Li2O2, and a high electrochemical stability even under stringent bending and twisting conditions. Our work represents a promising progress in the material development and architecture design of O2 electrode for flexible Li-O2 batteries.