ELECTRODE MATERIAL, ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE

According to one embodiment, an electrode material is provided. The electrode material includes active material particle containing: a niobium-titanium composite oxide having an average composition in which a molar ratio of niobium to titanium (MM) is greater than 2; and at least one element A selected from the group consisting of potassium, iron and phosphorus. The active material particle contain the element A at a concentration in the range of 100 ppm to 2000 ppm.