▎ 摘　　要

NOVELTY - Nanocomposite electrode comprises an electrode substrate, nitrogen-doped molybdenum carbide nanosheets, electrolyte, binding compound and conductive additive. The electrode substrate is coated with a mixture comprising the nitrogen-doped molybdenum carbide nanosheets, binding compound, conductive additive, and electrolyte, where electrolyte partially penetrates pores of the nitrogen-doped molybdenum carbide nanosheets, and the nitrogen-doped molybdenum carbide nanosheets are an outer layer of the electrode. USE - Nanocomposite electrode for a supercapacitor device used in a wearable device (all claimed), and energy storage device. ADVANTAGE - The nanocomposite electrode has enhanced electrochemical performance characteristics such as high power density, excellent capacitive properties, high energy density and long-life cycle. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: a supercapacitor device; a wearable device; and a method for making a nanocomposite electrode by dissolving binding compound, conductive additive, and electrolyte to form a slurry; mixing 1-15 wt.% of nitrogen-doped molybdenum carbide nanosheets based on total weight of the binding compound, conductive additive, and electrolyte into slurry creating a synthesis mixture; coating the synthesis mixture onto electrode surface to form the nanocomposite electrode; and drying the nanocomposite electrode at a temperature less than 100°C.