The invention provides a new electrode active material and cells and batteries which utilize such active material. The active material is represented by the nominal general formula LiaM'(2-b)M"bSicP(3-c)O12, 0 ≤ b ≤ 2, 0 < c < 3. M' and M" are each ele...

A non-aqueous electrolyte cell includes a cathode containing a cathode active material, which is mainly composed of a compound represented by the general formula LixFePO4, where 0 < x ≤ 1, with the molar ratio of Li3PO4 to a compound represented by the g...

An non-aqueous electrolyte cell having superior electronic conductivity and superior cell characteristics. A cathode active material used for the cell is a composite material of a compound having the formula LixFePO4, where 0 < x ≤ 1.0, and a carbon mate...

A lithium ion cell less costly than a control lithium ion cell is provided. The lithium ion cell is improved appreciably in operational stability under special conditions, such as high temperatures, and exhibits superior characteristics against over-discha...

A non-aqueous electrolyte secondary battery employing a positive electrode active material containing a compound represented by the general formula LixMyPO4, where 0 < x ≤ 2 and 0.8 ≤ y ≤ 1.2, with M containing a 3d transition metal, where LixMyPO4 e...