| 摘要 |
Disclosed are: a positive electrode material that can constitute a composition containing a positive electrode mixture having minimal deterioration over time and which can be produced with excellent productivity; a method for production therefor; a nonaqueous rechargeable battery with excellent storage properties and which is resistant to swelling when stored under high temperatures; and an electrode that can be used to constitute said battery. The positive electrode material is provided by forming a coating layer made from an organic silane compound on the surface of a positive electrode active substance made from a lithium nickel compound oxide represented by the general composition formula Li1 + xMO2 [where -0.5 = x = 0.5, and M represents a group of at least two elements containing Ni and at least one element selected from Mn and Co, and with the percentages (mol%) of Ni, Mn and Co, which constitute M, set to a, b and c respectively, being 20 = a < 100, 50 = a + b + c = 100], wherein the titer when titering the supernatant liquor obtained by mixing and stirring 20 g of said oxide with 100 ml of distilled water in a nitrogen atmosphere for 1 hour, with 0.2 mol/L of hydrochloric acid, is 0.5 to 150 ml. |
