COMPOSITION CONTAINING FIRST POSITIVE-ELECTRODE ACTIVE MATERIAL, SECOND POSITIVE-ELECTRODE ACTIVE MATERIAL, DISPERSANT, AND SOLVENT

摘要

This invention provides a composition that contains two different positive-electrode active materials and a solvent and inhibits gelling, i.e. excels in terms of temporal stability. Said composition is characterized by containing a first positive-electrode active material that can be represented by the general formula LiaNibCocMndDeOf (in which 0.2 ≤ a ≤ 1.7; b+c+d+e = 1; 0 ≤ e < 1; D represents one or more elements selected from among lithium, iron, chromium, copper, zinc, calcium, magnesium, zirconium, sulfur, silicon, sodium, potassium, and aluminum; and 1.7 ≤ f ≤ 2.1), a second positive-electrode active material that can be represented by the general formula LiMhPO4 (in which M represents one or more elements selected from among manganese, iron, cobalt, nickel, copper, magnesium, zinc, vanadium, calcium, strontium, barium, titanium, aluminum, silicon, boron, tellurium, and molybdenum; and 0 < h < 2), a dispersant, and a solvent.