ELECTRODE, NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK AND VEHICLE

According to one embodiment, there is provided an electrode (3). The electrode (3) includes an orthorhombic Na-containing niobium titanium composite oxide as a first composite oxide and a second composite oxide represented by a general formula of LiNaTiO, wherein -0.2 ≤ a ≤ 2 and -0.2 ≤ b ≤ 0.2.