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US 2020/0091513 A1Published application
Active material, electrode, secondary battery, battery pack, and vehicle
AssigneesKabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
InventorsYasuhiro HARADA, Norio Takami, Yasunobu Yamashita, Kazuomi Yoshima
Life of this patent
Estimating the term…
Abstract
According to one embodiment, an active material is provided. The active material includes a primary particle containing a phosphorus-containing monoclinic niobium-titanium composite oxide. The primary particle has a concentration gradient in which a phosphorus concentration increases from the gravity point of the primary particle toward the surface of the primary particle.
Claims15
An active material comprising
- a primary particle comprising a phosphorus-containing monoclinic niobium-titanium composite oxide,
- wherein the primary particle has a concentration gradient in which a phosphorus concentration increases from a gravity point of the primary particle toward a surface of the primary particle.
Dependencies are inferred from the claim text.