Mesoporous Nickel Oxide Nanowires: Hydrothermal Synthesis, Characterisation and Applications for Lithium-Ion Batteries and Supercapacitors with Superior Performance

Mesoporous nickel oxide nanowires were synthesized by a hydrothermal reaction and subsequent annealing at 400 °C. The porous one‐dimensional nanostructures were analysed by field‐emission SEM, high‐resolution TEM and N2 adsorption/desorption isotherm measurements. When applied as the anode material in lithium‐ion batteries, the as‐prepared mesoporous nickel oxide nanowires demonstrated outstanding electrochemical performance with high lithium storage capacity, satisfactory cyclability and an excellent rate capacity. They also exhibited a high specific capacitance of 348 F g−1 as electrodes in supercapacitors. Outstanding electrochemical performance for lithium storage in lithium‐ion batteries and a high specific capacitance as electrode materials in supercapacitors are exhibited by mesoporous nickel oxide nanowires (see figure) that were synthesised by a hydrothermal reaction and subsequent annealing.