▎ 摘　　要

NOVELTY - A positive active material composition comprises 1.5-11 wt.% carbon black (CB), 3-8 wt.% at least one binder, 72-95.5 wt.% positive active material containing lithium-nickel-manganese oxide, and optionally 0.1-2 wt.% carbon nanotubes, 0.1-2 wt.% graphene, and less than 5 wt.% other components or impurities. USE - Positive active material composition used for positive electrode of energy storage cell for batteries and capacitors e.g. hybrid supercapacitor for storing electrical energy (all claimed). Uses include but are not limited to automobiles, industrial applications, mass transportation, and grid regulation applications. ADVANTAGE - The positive active material composition provides energy storage cells having improved electrical properties, actual usable capacity, and fast charge/discharge capability or maximal voltage. DETAILED DESCRIPTION - A positive active material composition comprises 1.5-11 wt.% carbon black (CB), 3-8 wt.% at least one binder, 72-95.5 wt.% positive active material containing lithium-nickel-manganese oxide of formula: LiNixMn2-xO4particles, where x is 0-1, and optionally 0.1-2 wt.% carbon nanotubes, 0.1-2 wt.% graphene, and less than 5 wt.% of other components or impurities. INDEPENDENT CLAIMS are included for the following: manufacture of the positive electrode (32); a negative active material composition, which comprises 70-99 wt.% negative active material containing niobium pentoxide particles, activated carbon (MC) particles and optionally lithium titanate particles, 2-7 wt.% at least one binder, optionally up to 6 wt.% at least one conductive additive, and less than 5 wt.% other components or impurities; manufacture of negative electrode (22); and an energy storage cell (1). DESCRIPTION OF DRAWING(S) - The drawing shows a schematic cross-sectional view of the energy storage cell. 1Energy storage cell 21Anode terminal 22Negative electrode 23Current collector 32Positive electrode