JP2009218057A5

JP2009218057A5 -

Info

Publication number: JP2009218057A5
Application number: JP2008059500A
Authority: JP
Filing date: 2008-03-10
Publication date: 2011-03-31
Anticipated expiration: 2028-03-10

Claims

Bei example a cathode, an anode,
The electrolyte comprises a solvent containing an isocyanate compound represented by Formula 1, the secondary battery.

(R1 is a z-valent organic group, and z is an integer of 2 or more, provided that the carbon atom in the carbonyl group is bonded to the carbon atom in R1.)

Isocyanate compound represented by the formula 1 is a compound represented by Formula 2, the secondary battery according to claim 1, wherein.

(R2 is a divalent organic group. However, the carbon atom in the carbonyl group is bonded to the carbon atom in R2.)

R2 in the formula 2 is a linear alkylene group, the secondary battery according to claim 2, wherein.

R2 in the formula 2 is an ethylene group or a propylene group, a secondary battery according to claim 2, wherein.

The content of the isocyanate compound represented by the Formula 1 in the solvent is less than 5 wt% 0.01 wt%, the secondary battery according to claim 1, wherein.

The solvent, of a chain ester carbonate having halogen represented by 3, cyclic carbonate having halogen represented by Chemical Formula 4, cyclic ester carbonate having an unsaturated bond represented by Chemical formula 5 of 7, sultone at least one containing secondary battery according to claim 1, wherein one of and acid anhydrides.

(R11 to R16 are a hydrogen group, a halogen group, an alkyl group or a halogenated alkyl group, and at least one of them is a halogen group or a halogenated alkyl group.)

(R17 to R20 are a hydrogen group, a halogen group, an alkyl group or a halogenated alkyl group, and at least one of them is a halogen group or a halogenated alkyl group.)

(R21 and R22 are a hydrogen group or an alkyl group.)

(R23 to R26 are a hydrogen group, an alkyl group, a vinyl group, or an allyl group, and at least one of them is a vinyl group or an allyl group.)

(R27 is an alkylene group.)

Chain carbonate having halogen shown in the chemical formula 1, fluoromethyl methyl carbonate, a carbonate, difluoromethyl methyl carbonate or carbonate, bis (fluoromethyl), cyclic carbonate having halogen shown in the formula 4 is 4- fluoro-1,3-dioxolan-2-one or 4,5-difluoro-1,3-dioxolan-2-one der is, cyclic ester carbonate having an unsaturated bond represented by the formula 5 is a vinylene carbonate There, the cyclic carbonate having an unsaturated bond represented by the formula 6 is vinyl ethylene carbonate, cyclic carbonate having an unsaturated bond represented by the formula 7 is a methylene ethylene carbonate, according to claim 6 Secondary battery.

Lithium hexafluorophosphate, four lithium tetrafluoroborate, lithium perchlorate, an electrolyte salt which contains at least one selected from the group consisting of compounds represented by lithium hexafluoroarsenate and of 8 of 13 containing secondary battery according to claim 1, wherein.

(X31 is a group 1 element or group 2 element in the long-period periodic table, or aluminum (Al). M31 is a transition metal element, or a group 13 element, group 14 element, or group 15 element in the long-period periodic table. R31 is a halogen group, Y31 is — (O═) C—R32—C (═O) —, — (O═) C—C (R33) ₂ — or — ( O═ ) C—C ( ═O) —, wherein R32 is an alkylene group, a halogenated alkylene group, an arylene group or a halogenated arylene group, and R33 is an alkyl group, a halogenated alkyl group, an aryl group or a halogenated aryl group. A3 is an integer of 1 to 4, b3 is 0, 2 or 4, and c3, d3, m3 and n3 are integers of 1 to 3.)

(X41 is a group 1 element or group 2 element in the long periodic table. M41 is a transition metal element, or a group 13, element or group 15 element in the long period periodic table. Y41 is − ( O =) C- (C (R41 ) 2) b4 -C (= O) -, - (R43) 2 C- (C (R42) 2) c4 -C (= O) -, - (R43) 2 C -(C (R42) ₂ ) _c4 -C (R43) ₂ -,-(R43) ₂ C- (C (R42) ₂ ) _c4 -S (= O) ₂ -,-(O =) ₂ S- ( C (R42) ₂ ) _d4- S (= O) _2- or-(O =) C- (C (R42) ₂ ) _d4- S (= O) _2- where R41 and R43 are hydrogen groups. , An alkyl group, a halogen group, or a halogenated alkyl group, and at least one of each is a halogen group or a halogenated alkyl group. R42 is a hydrogen group, an alkyl group, a halogen group or a halogenated alkyl group, wherein a4, e4 and n4 are 1 or 2, b4 and d4 are integers of 1 to 4, and c4 Is an integer from 0 to 4, and f4 and m4 are integers from 1 to 3.)

(X51 is a group 1 element or group 2 element in the long-period periodic table. M51 is a transition metal element, or a group 13, element or group 15 element in the long-period periodic table. Rf is fluorinated. An alkyl group or a fluorinated aryl group, each having 1 to 10 carbon atoms Y51 is — (O═) C— (C (R51) ₂ ) _d5 —C (═O) —, — (R52); ₂ C- (C (R51) ₂ ) _d5 -C (= O)-,-(R52) ₂ C- (C (R51) ₂ ) _d5 -C (R52) ₂ -,-(R52) ₂ C- ( _{_{C (R51) 2) d5 -S}} (= O) 2 -, - (O =) 2 S- (C (R51) 2) e5 -S (= O) 2 - or - (O =) C- (C _{_{(R51) 2) e5 -S (}} = O) 2 -. is, however, R51 is a hydrogen group, an alkyl group, a halogen group, or a halogen Kaa R52 is a hydrogen group, an alkyl group, a halogen group or a halogenated alkyl group, at least one of which is a halogen group or a halogenated alkyl group, wherein a5, f5 and n5 are 1 or 2; B5, c5 and e5 are integers of 1 to 4, d5 is an integer of 0 to 4, and g5 and m5 are integers of 1 to 3.)

(M and n are integers of 1 or more.)

(R61 is a linear or branched perfluoroalkylene group having 2 to 4 carbon atoms.)

(P, q and r are integers of 1 or more.)

Compound represented by the formula 8 is a compound represented by Chemical Formula 14 (1) to (6), the compound shown in the formula 9 is represented by the Formula 15 (1) - (8) is a compound, the compound shown in the formula 10 is a compound represented by formula 16, secondary battery of claim 8.

The negative electrode is a negative electrode active material containing a carbon material, lithium metal (Li), or a material that can occlude and release lithium and has at least one of a metal element and a semi-metal element. including secondary battery according to claim 1, wherein.

The negative electrode, elemental silicon (Si), alloys and compounds, as well as simple substance of tin (Sn), including a negative electrode active material containing at least one selected from the group consisting of alloys and compounds, according to claim 1, wherein two Next battery.

The negative electrode has a negative electrode active material layer on a negative electrode current collector, and the negative electrode active material layer is formed by at least one method selected from the group consisting of a vapor phase method, a liquid phase method, and a firing method. The secondary battery according to claim 1 .

An electronic apparatus comprising the secondary battery according to any one of claims 1 to 12.

The electrolyte solution for secondary batteries containing the solvent containing the isocyanate compound represented by Chemical formula 17 .

(R1 is a z-valent organic group, and z is an integer of 2 or more, provided that the carbon atom in the carbonyl group (—CO—) is bonded to the carbon atom in R1.)