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US 8,911,901 B2Granted
Negative electrode for non-aqueous secondary battery and non-aqueous secondary battery
AssigneeHitachi, Ltd.
InventorsTakashi Nakabayashi, Shin Takahashi
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AssigneeHitachi, Ltd.
InventorsTakashi Nakabayashi, Shin Takahashi
Estimating the term…
The object of the present invention is to inhibit occurrence of structural collapse caused by volumetric change of primary particles of negative electrode active material and to improve adhesion between negative electrode active material and electrically conductive agent and between negative electrode mix layer and collector, whereby improvement of life is attained in negative electrode for non-aqueous secondary battery and non-aqueous secondary battery. In the negative electrode for non-aqueous secondary battery of the present invention, the negative electrode active material comprises silicon and/or tin, and at least one element selected from elements which do not react with lithium and has pores in both of the inner core portion and the outer peripheral portion of primary particles and a material which cures by a heat treatment is used as a binder.
A negative electrode for a non-aqueous secondary battery wherein a negative electrode active material comprises primary particles made of an alloy comprising at least one selected from the group consisting of silicon and tin, and at least one element selected from elements which do not react with lithium, and both an inner core portion and an outer peripheral portion of the primary particles have pores, and a binder contains a material which cures by a heat treatment, and
A negative electrode for a non-aqueous secondary battery comprising:
Dependencies are inferred from the claim text.