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US 2006/0134528 A1Published application
Battery
AssigneeSony Corporation
InventorsMasayuki Ihara, Hiroyuki Yamaguchi, Hiroshi Horiuchi, Tadahiko Kubota
Life of this patent
Estimating the term…
Abstract
A battery capable of improving cycle characteristics is provided. A spirally wound electrode body in which a cathode and an anode are wound with a separator in between is included. An electrolytic solution in which an electrolyte salt is dissolved in a solvent is impregnated in the separator. The electrolytic solution contains a cyclic ester carbonate derivative having halogen atom such as 4-fluoro-1,3-dioxolan-2-one and a light metal salt such as difluoro[oxolate-O,O′]lithium borate, tetrafluoro[oxolate-O,O′]lithium phosphate, and difluoro bis[oxolate-O,O′]lithium phosphate.
Claims19
A battery comprising:
- a cathode;
- an anode;
- and
- an electrolyte,
- wherein an anode active material includes a lithium metal, and
- the electrolyte contains a cyclic ester carbonate derivative having halogen atom and at least one from the group consisting of light metal salts expressed in Chemical formula 1 and Chemical formula 2:
- wherein R11 represents —C(═O)—R21-C(═O)-group (R21 represents an alkylene group, an alkylene halide group, an arylene group, or an arylene halide group), —C(═O)—C(R23)(R24)-group (R23 and R24 represent an alkyl group, an alkyl halide group, an aryl group, or an aryl halide group), or —C(═O)—C(═O)-group;
- R12 represents a halogen group, an alkyl group, an alkyl halide group, an aryl group, or an aryl halide group;
- X11 and X12 represent oxygen (O) or sulfur (S), respectively;
- M11 represents a transition metal element, or a 3B Group element, a 4B Group element, or a 5B Group element in the short period periodic table;
- M21 represents a 1A Group element or a 2A Group element in the short period periodic table or aluminum (Al);
- a represents an integer number from 1 to 4;
- b represents an integer number from 0 to 8;
- and c, d, e, and f represent an integer number from 1 to 3, respectively,
- wherein R31, R32, R33, and R34 represent a group obtained by substituting at least part of hydrogen of an alkyl group with halogen.
12 more elements
A battery comprising:
- a cathode;
- an anode;
- and
- an electrolyte,
- wherein an anode contains an anode material capable of inserting and extracting an electrode reactant and containing at least one of metal elements and metalloid elements as an element, and
- the electrolyte contains a cyclic ester carbonate derivative having halogen atom and at least one from the group consisting of light metal salts expressed in Chemical formula 1 or Chemical formula 2:
- wherein R11 represents —C(═O)—R21-C(═O)-group (R21 represents an alkylene group, an alkylene halide group, an arylene group, or an arylene halide group), —C(═O)—C(R23)(R24)-group (R23 and R24 represent an alkyl group, an alkyl halide group, an aryl group, or an aryl halide group), or —C(═O)—C(═O)-group;
- R12 represents a halogen group, an alkyl group, an alkyl halide group, an aryl group, or an aryl halide group;
- X11 and X12 represent oxygen (O) or sulfur (S), respectively;
- M11 represents a transition metal element, or a 3B Group element, a 4B Group element, or a 5B Group element in the short period periodic table;
- M21 represents a 1A Group element or a 2A Group element in the short period periodic table or aluminum (Al);
- a represents an integer number from 1 to 4;
- b represents an integer number from 0 to 8;
- and c, d, e, and f represent an integer number from 1 to 3, respectively,
- wherein R31, R32, R33, and R34 represent a group obtained by substituting at least part of hydrogen of an alkyl group with halogen.
12 more elements
A battery comprising:
- a cathode;
- an anode;
- and
- an electrolyte,
- wherein a capacity of the anode includes a capacity component due to insertion and extraction of a light metal and a capacity component due to precipitation and dissolution of the light metal, and is expressed by the sum thereof, and
- the electrolyte contains a cyclic ester carbonate derivative having halogen atom and at least one from the group consisting of light metal salts expressed in Chemical formula 1 or Chemical formula 2:
- wherein R11 represents —C(═O)—R21-C(═O)-group (R21 represents an alkylene group, an alkylene halide group, an arylene group, or an arylene halide group), —C(═O)—C(R23)(R24)-group (R23 and R24 represent an alkyl group, an alkyl halide group, an aryl group, or an aryl halide group), or —C(═O)—C(═O)-group;
- R12 represents a halogen group, an alkyl group, an alkyl halide group, an aryl group, or an aryl halide group;
- X11 and X12 represent oxygen (O) or sulfur (S), respectively;
- M11 represents a transition metal element, or a 3B Group element, a 4B Group element, or a 5B Group element in the short period periodic table;
- M21 represents a 1A Group element or a 2A Group element in the short period periodic table or aluminum (Al);
- a represents an integer number from 1 to 4.;
- b represents an integer number from 0 to 8;
- and c, d, e, and f represent an integer number from 1 to 3, respectively,
- wherein R31, R32, R33, and R34 represent a group obtained by substituting at least part of hydrogen of an alkyl group with halogen.
12 more elements
Dependencies are inferred from the claim text.