Electrode, secondary battery, battery pack, and vehicle
AssigneesKabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
InventorsKeigo HOSHINA, Wen Zhang, Yasuhiro Harada, Norio Takami
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Abstract
According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer. The active material-containing layer includes an active material and a conductive agent. The active material contains primary particles of a niobium-titanium composite oxide. The conductive agent contains fibrous carbon. The primary particles have an average particle size of 0.3 μm or more and 2 μm or less. At least a part of a surface of the primary particles is coated with the fibrous carbon. A covering ratio of the primary particles by the fibrous carbon is 0.01% or more and 40% or less.
Claims13
An electrode comprising:
- an active material-containing layer which includes an active material containing primary particles of a niobium-titanium composite oxide and a conductive agent containing fibrous carbon,
- wherein the primary particles have an average particle size of 0.3 μm or more and 2 μm or less, and
- at least a part of a surface of the primary particles is coated with the fibrous carbon and a covering ratio of the primary particles by the fibrous carbon is 0.01% or more and 40% or less.
Dependencies are inferred from the claim text.