NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
The present invention is directed to a high-capacity non-aqueous electrolyte secondary battery having good storage characteristics and good rapid charge characteristics. A non-aqueous electrolyte secondary battery according to one aspect of the present invention includes: a positive electrode plate...
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| creator | HASHITANI Sanae TAKIGAWA Masashi MIYANARI Mitsunori |
| description | The present invention is directed to a high-capacity non-aqueous electrolyte secondary battery having good storage characteristics and good rapid charge characteristics. A non-aqueous electrolyte secondary battery according to one aspect of the present invention includes: a positive electrode plate in which a positive electrode mixture layer containing a positive electrode active material is formed on a positive electrode current collector; a negative electrode plate in which a negative electrode mixture layer containing a negative electrode active material is formed on a negative electrode current collector; a separator; a non-aqueous electrolyte; a sealing member; and an outer casing. The negative electrode active material contains graphite and a silicon material. The silicon material contains silicon oxide represented by SiOx (0.5 ≤ x < 1.6) and a silicon-lithium silicate composite in which a silicon phase is dispersed in a lithium silicate phase represented by Li2zSiO(2+z) (0 < z < 2). The amount of the silicon-lithium silicate composite is 33% by mass or more and 93% by mass or less relative to the silicon material. |
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A non-aqueous electrolyte secondary battery according to one aspect of the present invention includes: a positive electrode plate in which a positive electrode mixture layer containing a positive electrode active material is formed on a positive electrode current collector; a negative electrode plate in which a negative electrode mixture layer containing a negative electrode active material is formed on a negative electrode current collector; a separator; a non-aqueous electrolyte; a sealing member; and an outer casing. The negative electrode active material contains graphite and a silicon material. The silicon material contains silicon oxide represented by SiOx (0.5 ≤ x < 1.6) and a silicon-lithium silicate composite in which a silicon phase is dispersed in a lithium silicate phase represented by Li2zSiO(2+z) (0 < z < 2). 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A non-aqueous electrolyte secondary battery according to one aspect of the present invention includes: a positive electrode plate in which a positive electrode mixture layer containing a positive electrode active material is formed on a positive electrode current collector; a negative electrode plate in which a negative electrode mixture layer containing a negative electrode active material is formed on a negative electrode current collector; a separator; a non-aqueous electrolyte; a sealing member; and an outer casing. The negative electrode active material contains graphite and a silicon material. The silicon material contains silicon oxide represented by SiOx (0.5 ≤ x < 1.6) and a silicon-lithium silicate composite in which a silicon phase is dispersed in a lithium silicate phase represented by Li2zSiO(2+z) (0 < z < 2). 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| subjects | BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY |
| title | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY |
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