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Nonaqueous electrolyte secondary battery

TAKEHARA HIDEAKI / SHIRANE TAKAYUKI

A nonaqueous electrolyte secondary battery (30) is provided with: a positive electrode (2); a negative electrode (1) that contains lithium titanate; a separator (3) that is interposed between the positive electrode (2) and the negative electrode (1); and a nonaqueous electrolyte that contains an electrolyte salt and a nonaqueous solvent. The nonaqueous solvent contains propylene carbonate, a chain carbonate A represented by general formula R1OCOOR2 (wherein each of R1 and R2 represents an alkyl group having 2 or more carbon atoms), and a chain carbonate B represented by general formula R3OCOOR4 (wherein R3 represents a methyl group and R4 represents an alkyl group). The volume fraction of the propylene carbonate in the nonaqueous solvent is within the range of 25-33% by volume; the volume fraction of the chain carbonate A in the nonaqueous solvent is within the range of 65-74% by volume; and the volume fraction of the chain carbonate B in the nonaqueous solvent is within the range of 1-10% by volume.

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Nonaqueous electrolyte secondary battery

TAKEHARA HIDEAKI / SHIRANE TAKAYUKI

A nonaqueous electrolyte secondary battery (30) is provided with: a positive electrode (2); a negative electrode (1) that contains lithium titanate; a separator (3) that is interposed between the positive electrode (2) and the negative electrode (1); and a nonaqueous electrolyte that contains an electrolyte salt and a nonaqueous solvent. The nonaqueous solvent contains propylene carbonate, a chain carbonate A represented by general formula R1OCOOR2 (wherein each of R1 and R2 represents an alkyl group having 2 or more carbon atoms), and a chain carbonate B represented by general formula R3OCOOR4 (wherein R3 represents a methyl group and R4 represents an alkyl group). The volume fraction of the propylene carbonate in the nonaqueous solvent is within the range of 25-33% by volume; the volume fraction of the chain carbonate A in the nonaqueous solvent is within the range of 65-74% by volume; and the volume fraction of the chain carbonate B in the nonaqueous solvent is within the range of 1-10% by volume.

Nonaqueous electrolyte secondary battery

TAKEHARA HIDEAKI / SHIRANE TAKAYUKI

A nonaqueous electrolyte secondary battery (30) is provided with: a positive electrode (2); a negative electrode (1) that contains lithium titanate; a separator (3) that is interposed between the positive electrode (2) and the negative electrode (1); and a nonaqueous electrolyte that contains an electrolyte salt and a nonaqueous solvent. The nonaqueous solvent contains propylene carbonate, a chain carbonate A represented by general formula R1OCOOR2 (wherein each of R1 and R2 represents an alkyl group having 2 or more carbon atoms), and a chain carbonate B represented by general formula R3OCOOR4 (wherein R3 represents a methyl group and R4 represents an alkyl group). The volume fraction of the propylene carbonate in the nonaqueous solvent is within the range of 25-33% by volume; the volume fraction of the chain carbonate A in the nonaqueous solvent is within the range of 65-74% by volume; and the volume fraction of the chain carbonate B in the nonaqueous solvent is within the range of 1-10% by volume.

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Titel:

Nonaqueous electrolyte secondary battery

Beteiligte:

TAKEHARA HIDEAKI (Autor:in) / SHIRANE TAKAYUKI (Autor:in)

Erscheinungsdatum:

25.11.2015

Medientyp:

Patent

Format:

Elektronische Ressource

Sprache:

Englisch

Klassifikation:

IPC: E05F DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION , Vorrichtungen zum Bewegen der Flügel in die Offen- oder Schließstellung

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