This work presents for the first time a CdCO3/CdO/Co3O4@nickel foam based supercapacitor with high both specific capacitance and energy density, a widespread potential window and a long cycle life.
Zn2+ added into electrolyte can effectively suppress H2 evolution. Therefore, a LiMn2O4/NaTi2(PO4)3 full cell exhibits enhanced overcharging performance and excellent cycling stability up to 10 000 cycles.
Self-assembled 3D urchin-like Ti0.8Sn0.2O2–rGO was fabricated by a one-step hydrothermal process as an anode material for high-rate and long cycle life LIBs.