Electrode materials, electrodes, secondary batteries, and battery packs

Abstract

The present invention provides an electrode material capable of realizing a secondary battery that exhibits excellent rapid charge / discharge performance and cycle life performance, an electrode containing this electrode material, a secondary battery equipped with this electrode, and a battery pack equipped with this secondary battery. [Solution] According to the embodiment, an electrode material containing a niobium-titanium-containing oxide is provided. The niobium-titanium-containing oxide is Nb2TiO7 phase, Nb 10 Ti2O 29 Phase, Nb 14 TiO 37 Phase and Nb 24 TiO 64 It comprises at least one crystalline phase selected from the group consisting of phases. In at least one crystalline phase, at least one element selected from the group consisting of Ta, W, Mo, and P is included, and some of the oxide ions are substituted with fluorine F.

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