Coin-shaped lithium secondary battery and IoT device
摘要
說明書
The primary grains 11 are composed of a lithium complex oxide. The lithium complex oxide is an oxide represented by LixMO2 (where 0.05<x<1.10 is satisfied, M represents at least one transition metal, and M typically contains one or more of Co, Ni, and Mn). The lithium complex oxide has a layered rock-salt structure. The layered rock-salt structure refers to a crystalline structure in which lithium layers and transition metal layers other than lithium are alternately stacked with oxygen layers interposed therebetween, that is, a crystalline structure in which transition metal ion layers and single lithium layers are alternately stacked with oxide ions therebetween (typically, an α-NaFeO2 structure, i.e., a cubic rock-salt structure in which transition metal and lithium are regularly disposed in the [111] axis direction). Examples of the lithium complex oxide include LixCoO2 (lithium cobaltate), LixNiO2 (lithium nickelate), LixMnO2 (lithium manganate), LixNiMnO2 (lithium nickel manganate), LixNiCoO2 (lithium nickel cobaltate), LixCoNiMnO2 (lithium cobalt nickel manganate), and LixCoMnO2 (lithium cobalt manganate), particularly preferably LixCoO2 (lithium cobaltate, typically LiCoO2). The lithium complex oxide may contain one or more elements selected from Mg, Al, Si, Ca, Ti, V, Cr, Fe, Cu, Zn, Ga, Ge, Sr, Y, Zr, Nb, Mo, Ag, Sn, Sb, Te, Ba, Bi, and W.
