Negative electrode for secondary batteries, and secondary battery
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKyohei Sakamoto, Nobuhiko Hojo, Masaki Hasegawa
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Abstract
This negative electrode for secondary batteries is provided with a negative electrode mixture that contains a negative electrode active material, an additive and a conductive agent. The negative electrode active material contains an Si-containing material; the additive contains an alkali metal sulfate salt; and the conductive agent contains carbon nanotubes. The content of the alkali metal sulfate salt in the negative electrode mixture is from 0.0025% by mass to 0.1% by mass relative to the total mass of the negative electrode active material.
Claims11
A negative electrode for secondary batteries, the negative electrode comprising a negative electrode mixture including a negative electrode active material, an additive, and a conductive agent,
- the negative electrode active material including a carbon material and an Si-containing material, the additive including an alkali metal sulfate, and the conductive agent including a carbon nanotube,
- the alkali metal sulfate is an inorganic compound,
- the negative electrode mixture having a content of the alkali metal sulfate of 0.0025 mass % or more and 0.1 mass % or less based on a total amount of the negative electrode active material, and
- the negative electrode active material having a content of the carbon material of 85 mass % or more and 99 mass % or less”.
Dependencies are inferred from the claim text.