Wound electrode group, electrode group, and non-aqueous electrolyte battery

摘要

One embodiment of the present invention provides an electrode group. This electrode group includes a laminate. The laminate comprises a positive electrode, at least one negative electrode layer, and a separator. The negative electrode includes a negative electrode collector and a negative electrode layer formed upon the negative electrode collector. The negative electrode layer includes a lithium titanium complex oxide. This electrode group fulfils the following relationship formulas (I)-(III): 10 ≤ a