Polymer electrolyte secondary cell
AssigneeSanyo Electric Co., Ltd.
InventorKentaro Takahashi
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Abstract
A polymer electrolyte secondary cell with high safety against overcharging includes a positive electrode containing a positive electrode active material; a negative electrode containing a negative electrode active material; a polymer electrolyte containing a non-aqueous solvent, an electrolyte salt, and a polymer. The non-aqueous solvent contains a tertiary carboxylic acid ester shown in Formula 1 below. The polymer is formed from monomers containing alkylene glycol (meth)acrylate and/or N,N-dialkyl (meth)acrylamide. where R1 to R4 each denote a straight-chained or branched alkyl group having 4 or less carbon atoms and may be the same or different.
Claims7
A polymer electrolyte secondary cell comprising:
- a positive electrode having a positive electrode active material;
- a negative electrode having a negative electrode active material;
- and
- a polymer electrolyte containing a non-aqueous solvent, an electrolyte salt, and a polymer, wherein
- the non-aqueous solvent contains a tertiary carboxylic acid ester represented by Formula 1, and
- the polymer is polymerized from monomers containing alkylene glycol (meth)acrylate and/or N,N-dialkyl (meth)acrylamide
- where R1 to R4 each denote a straight-chained or branched alkyl group having 4 or less carbon atoms and may be the same or different.
Dependencies are inferred from the claim text.