ELECTROLYTIC SOLUTION AND BATTERY
An electrolytic solution and battery are provided. The battery includes a cathode, an anode and the electrolytic solution, and a separator arranged between the cathode and the anode is impregnated with the electrolytic solution. The solvent of the electrolytic solution includes a sulfone compound having a sulfonyl fluoride type structure.
1 . An electrolytic solution comprising:
a solvent including a sulfone compound represented by Chemical Formula 1:
where R1 represents a z-valent group including carbon and one kind or two or more kinds of elements selected from the group consisting of hydrogen, oxygen and halogens, a sulfur atom in a sulfonyl group is bonded to a carbon atom in R1, and z is an integer of 2 or more.
2 . The electrolytic solution according to claim 1 , wherein in the case where R1 is a straight-chain alkylene group or a halogenated alkylene group, the number of carbon atoms is 2 or less.
3 . The electrolytic solution according to claim 1 , wherein
the sulfone compound represented by Chemical Formula 1 is a compound represented by Chemical Formula 2:
where R2 represents a divalent group including carbon and one kind or two or more kinds of elements selected from hydrogen, oxygen and halogens, and a sulfur atom in a sulfonyl group is bonded to a carbon atom in R2.
4 . The electrolytic solution according to claim 3 , wherein in the case where R2 is a straight-chain alkylene group or a halogenated alkylene group, the number of carbon atoms is 2 or less.
5 . The electrolytic solution according to claim 1 , wherein
the solvent includes at least one kind selected from the group consisting of a chain carbonate represented by Chemical Formula 3 which includes a halogen and a cyclic carbonate represented by Chemical Formula 3 which includes a halogen:
where R11, R12, R13, R14, R15 and R16 each represent 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,
where R21, R22, R23 and R24 each represent 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.
6 . The electrolytic solution according to claim 5 , wherein
the chain carbonate represented by Chemical Formula 3 which includes a halogen and the cyclic carbonate represented by Chemical Formula 4 which includes a halogen are each a compound including one halogen.
7 . The electrolytic solution according to claim 5 , wherein
the chain carbonate represented by Chemical Formula 3 which includes a halogen and the cyclic carbonate represented by Chemical Formula 4 which includes a halogen are each a compound including two halogens.
8 . The electrolytic solution according to claim 5 , wherein
the chain carbonate represented by Chemical Formula 3 is selected from the group consisting of: fluoromethyl methyl carbonate and bis(fluoromethyl) carbonate, and
the cyclic carbonate represented by Chemical Formula 4 which includes a halogen is selected from the group consisting of: 4-fluoro-1,3-dioxolane-2-one and 4,5-difluoro-1,3-dioxolane-2-one.
9 . The electrolytic solution according to claim 1 , wherein the solvent includes at least one selected from the group consisting of: a cyclic carbonate including an unsaturated bond, a sultone, and an acid anhydride.
10 . The electrolytic solution according to claim 1 , comprising:
an electrolyte salt including at least one kind selected from the group consisting of lithium hexafluorophosphate (LiPF 6 ), lithium tetrafluoroborate (LiBF 4 ), lithium perchlorate (LiClO 4 ) and lithium hexafluoroarsenate (LiAsF 6 ).
11 . The electrolytic solution according to claim 1 , comprising:
an electrolyte salt including at least one kind selected from the group consisting of compounds represented by Chemical Formulas 11, 12 and 13:
LiN(C m F 2m+1 SO 2 )(C n F 2n+1 SO 2 ) Chemical Formula 11
where m and n each are an integer of 1 or more,
where R61 represents a straight-chain or branched perfluoroalkylene group having 2 to 4 carbon atom,
LiC(C p F 2p+1 SO 2 )(C q F 2q+1 SO 2 )(C r F 2r+1 SO 2 ) Chemical Formula 13
where p, q and r each are an integer of 1 or more.
12 . A secondary battery comprising a cathode, an anode and an electrolytic solution according to claim 1 .
13 . The secondary battery according to claim 12 , wherein a content of the sulfone compound represented by Chemical Formula 14 in the solvent is within a range from 0.01 wt % to 10 wt % both inclusive.
14 . The secondary battery according to claim 12 , wherein the anode includes an anode active material including a carbon material, lithium metal or a material being capable of inserting and extracting lithium and including at least one kind selected from the group consisting of metal elements and metalloid elements.
15 . The secondary battery according to claim 12 , wherein
the anode includes an anode active material layer on an anode current collector, and
the anode active material layer is formed by at least one kind of method selected from the group consisting of a vapor-phase method, a liquid-phase method and a firing method.
16 . An electrolytic solution comprising:
a solvent including a sulfone compound represented by Chemical Formula 55:
where R1 is a chain group including a carbon-carbon unsaturated bond or a derivative thereof.
17 . The electrolytic solution according to claim 16 , wherein
a halogen is substituted for at least a part of hydrogen in R1 shown in Chemical Formula 55.
18 . The electrolytic solution according to claim 17 , wherein the halogen is fluorine.
19 . The electrolytic solution according to claim 16 , wherein R1 shown in Chemical Formula 55 includes oxygen.
20 . The electrolytic solution according to claim 16 , wherein the number of carbon atoms in R1 shown in Chemical Formula 55 is within a range from 2 to 4 both inclusive.
21 . The electrolytic solution according to claim 16 , wherein
a content of the sulfone compound represented by Chemical Formula 55 in the solvent is within a range from 0.01 wt % to 5 wt % both inclusive.
22 . The electrolytic solution according to claim 16 , wherein
the solvent includes at least one kind selected from the group consisting of a chain carbonate represented by Chemical Formula 56 which includes a halogen and a cyclic carbonate represented by Chemical Formula 57 which includes a halogen:
where R11, R12, R13, R14, R15 and R16 each represent 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,
where R21, R22, R23 and R24 each represent 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.
23 . The electrolytic solution according to claim 22 , wherein
the chain carbonate represented by Chemical Formula 56 is at least one kind selected from the group consisting of fluoromethyl methyl carbonate and bis(fluoromethyl) carbonate, and
the cyclic carbonate represented by Chemical Formula 57 which includes a halogen is at least one kind selected from the group consisting of 4-fluoro-1,3-dioxolane-2-one and 4,5-difluoro-1,3-dioxolane-2-one.
24 . The electrolytic solution according to claim 16 , wherein the solvent includes at least one selected from the group consisting of: a cyclic carbonate including an unsaturated bond, a sultone, and an acid anhydride.
25 . The electrolytic solution according to claim 16 , comprising:
an electrolyte salt including at least one kind selected from the group consisting of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate and lithium hexafluoroarsenate.
26 . The electrolytic solution according to claim 16 , comprising:
an electrolyte salt including at least one kind selected from the group consisting of compounds represented by Chemical Formulas 58, 59 and 60:
where X31 represents a Group 1A element or a Group 2A element in the short form of the periodic table of the elements, or aluminum, M31 represents a transition metal, or a Group 3B element, a Group 4B element or a Group 5B element in the short form of the periodic table of the elements, R31 represents a halogen group, Y31 represents —OC—R32-CO—, —OC—CR33 2 - or —OC—CO—, in which R32 represents an alkylene group, a halogenated alkylene group, an arylene group or a halogenated arylene group, and R33 represents an alkyl group, a halogenated alkyl group, an aryl group or a halogenated aryl group, and a3 is an integer of 1 to 4 both inclusive, and b3 is 0 or an integer of 2 or 4, and c3, d3, m3 and n3 each are an integer of 1 to 3 both inclusive,
where X41 represents a Group 1A element or a Group 2A element in the short form of the periodic table of the elements, M41 represents a transition metal, or a Group 3B element, a Group 4B element or a Group 5B element in the short form of the periodic table of the elements, Y41 represents —OC—(CR41 2 ) b4 -CO—, —R43 2 C—(CR42 2 ) c4 -CO—, —R43 2 C—(CR42 2 ) c4 -CR43 2 -, —R43 2 C—(CR42 2 ) c4 -SO 2 —, —O 2 S—(CR42 2 ) d4 -SO 2 — or —OC—(CR42 2 ) d4 -SO 2 —, in which R41 and R43 each represent a hydrogen group, an alkyl group, a halogen group or a halogenated alkyl group and at least one of them is a halogen group or a halogenated alkyl group, and R42 represents a hydrogen group, an alkyl group, a halogen group or a halogenated alkyl group, and a4, e4 and n4 each are an integer of 1 or 2, b4 and d4 each are an integer of 1 to 4 both inclusive, c4 is 0 or an integer of 1 to 4 both inclusive, and f4 and m4 each are an integer of 1 to 3 both inclusive,
where X51 represents a Group 1A element or a Group 2A element in the short form of the periodic table of the elements, M51 represents a transition metal, or a Group 3B element, a Group 4B element or a Group 5B element in the short form of the periodic table of the elements, Rf represents a fluorinated alkyl group having 1 to 10 carbon atoms or a fluorinated aryl group having 1 to 10 carbon atoms, Y51 represents —OC—(CR51 2 ) d5 -CO—, —R52 2 C—(CR51 2 ) d5 -CO—, —R52 2 C—(CR51 2 ) d5 -CR52 2 -, —R52 2 C—(CR51 2 ) d5 -SO 2 —, —O 2 S—(CR51 2 ) e5 -SO 2 — or —OC—(CR51 2 ) e5 -SO 2 —, in which R51 represents a hydrogen group, an alkyl group, a halogen group or a halogenated alkyl group, and R52 represents a hydrogen group, an alkyl group, a halogen group or a halogenated alkyl group and at least one of them is a halogen group or a halogenated alkyl group, and a5, f5 and n5 each are an integer of 1 or 2, b5, c5 and e5 each are an integer of 1 to 4 both inclusive, d5 is 0 or an integer of 1 to 4 both inclusive, and g5 and m5 each are an integer of 1 to 3 both inclusive.
27 . The electrolytic solution according to claim 26 , wherein
the compound represented by Chemical Formula 58 is at least one kind selected from the group consisting of compounds represented by Chemical Formula 61, the compound represented by Chemical Formula 59 is at least one kind selected from the group consisting of compounds represented by Chemical Formula 62, and the compound represented by Chemical Formula 60 is a compound represented by Chemical Formula 63:
28 . The electrolytic solution according to claim 16 , comprising:
an electrolyte salt including at least one kind selected from the group consisting of compounds represented by Chemical Formulas 64, 65 and 66:
LiN(C m F 2m+1 SO 2 )(C n F 2n+1 SO 2 ) Chemical Formula 64
where m and n each are an integer of 1 or more,
where R61 represents a straight-chain or branched perfluoroalkylene group having 2 to 4 carbon atom.
LiC(C p F 2p+1 SO 2 )(C q F 2q+1 SO 2 )(C r F 2r+1 SO 2 ) Chemical Formula 66
where p, q and r each are an integer of 1 or more.
29 . A secondary battery comprising a cathode, an anode and an electrolytic solution according to claim 16 .
30 . The secondary battery according to claim 29 , wherein a content of the sulfone compound represented by Chemical Formula 67 in the solvent is within a range from 0.01 wt % to 5 wt % both inclusive.
31 . The secondary battery according to claim 29 , wherein the anode includes an anode active material including a carbon material, lithium metal or a material being capable of inserting and extracting lithium and including at least one kind selected from the group consisting of metal elements and metalloid elements.
32 . The secondary battery according to claim 29 , wherein the anode includes an anode active material including at least one kind selected from the group consisting of a simple substance, an alloy and a compound of silicon and a simple substance, an alloy and a compound of tin.
33 . The secondary battery according to claim 29 , wherein
the anode includes an anode active material layer on an anode current collector, and
the anode active material layer is formed by at least one kind of method selected from the group consisting of a vapor-phase method, a liquid-phase method and a firing method.