Nonaqueous electrolyte battery and nonaqueous electrolyte
View Patent ↗A nonaqueous electrolyte battery includes: a positive electrode; a negative electrode; a nonaqueous electrolyte that includes a solvent and an electrolyte salt, the solvent including a halogenated cyclic carbonate of the Formula (1) below, or at least one of unsaturated cyclic carbonates of the Formulae (2) and (3) below; and a polyacid and/or a polyacid compound contained in the battery, where X is a F group or a Cl group, R1 and R2 are each independently a C n H 2n+1 group (0≦n≦4), and R3 is C n H 2n+1−m X m (0≦n≦4, 0≦m≦2n+1), where R4 and R5 are each independently a C n H 2n+1 group (0≦n≦4), where R6 to R11 are each independently a C n H 2n+1 group (0≦n≦4).
1. A nonaqueous electrolyte battery comprising:
a positive electrode;
a negative electrode;
a nonaqueous electrolyte that includes a solvent and an electrolyte salt, the solvent including a halogenated cyclic carbonate of the Formula (1) below, or at least one of unsaturated cyclic carbonates of the Formulae (2) and (3) below; and
a heteropolymolybdic acid and/or a heteropolymolybdic acid compound contained in the battery,
where X is a F group or a Cl group, R1 and R2 are each independently a C n H 2n+1 group (0≦n≦4), and R3 is C n H 2n+1−m X m (0≦n≦4, 0≦m≦2n+1),
where R4 and R5 are each independently a C n H 2n+1 group (0≦n≦4),
where R6 to R11 are each independently a C n H 2n+1 group (0≦n≦4), and
wherein the electrolyte salt includes a lithium salt, and
wherein an upper limit charge voltage of the nonaqueous electrolyte battery is 4.35 V.
2. The nonaqueous electrolyte battery according to claim 1 , wherein the heteropolymolybdic acid and/or the heteropolymolybdic acid compound include a Mo polyatom, and in which some of the polyatoms are replaced with at least one element selected from element group (b) consisting of Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Zr, Tc, Rh, Cd, In, Sn, Ta, Re, Tl, and Pb.
3. The nonaqueous electrolyte battery according to claim 1 , wherein the heteropolymolybdic acid and/or the heteropolymolybdic acid compound are of the following Formulae (A) to (D):
H x A y [BD 12 O 40 ].z H 2 O (A)
wherein A represents lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), magnesium (Mg), calcium (Ca), aluminum (Al), ammonium (NH 4 ), an ammonium salt, or a phosphonium salt, B represents phosphorus (P), silicon (Si), arsenic (As), or germanium (Ge), D is molybdenum (Mo), x, y, and z satisfy 0≦x≦4, 0≦y≦4, 0≦z≦50, where at least one of x and y is not 0;
H x A y [BD 6 O 24 ].z H 2 O (B)
wherein A represents lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), magnesium (Mg), calcium (Ca), aluminum (Al), ammonium (NH 4 ), an ammonium salt, or a phosphonium salt, B represents phosphorus (P), silicon (Si), arsenic (As), or germanium (Ge), D is molybdenum (Mo), x, y, and z satisfy 0≦x≦8, 0≦y≦8, 0≦z≦50, where at least one of x and y is not 0;
H x A y [B 2 D 18 O 62 ].z H 2 O (C)
where A represents lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), magnesium (Mg), calcium (Ca), aluminum (Al), ammonium (NH 4 ), an ammonium salt, or a phosphonium salt, B represents phosphorus (P), silicon (Si), arsenic (As), or germanium (Ge), D is molybdenum (Mo), x, y, and z satisfy 0≦x≦8, 0≦y≦8, 0≦z≦50, where at least one of x and y is not 0; and
H x A y [B 5 D 30 O 110 ].z H 2 O (D)
where A represents lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), magnesium (Mg), calcium (Ca), aluminum (Al), ammonium (NH 4 ), an ammonium salt, or a phosphonium salt, B represents phosphorus (P), silicon (Si), arsenic (As), or germanium (Ge), D is molybdenum (Mo), x, y, and z satisfy 0≦x≦15, 0≦y≦15, 0≦z≦50, where at least one of x and y is not 0.
4. The nonaqueous electrolyte battery according to claim 1 , wherein the halogenated cyclic carbonate is 4-fluoro-1,3-dioxolan-2-one.
5. The nonaqueous electrolyte battery according to claim 1 , wherein the unsaturated cyclic carbonate is vinylene carbonate.
6. The nonaqueous electrolyte battery according to claim 1 ,
wherein the positive electrode includes, as a positive electrode active material, a lithium composite oxide that has a layered rock-salt crystal structure of the average composition represented by Li x MO 2 (where M is at least one element selected from cobalt (Co), nickel (Ni), aluminum (Al), manganese (Mn), boron (B), magnesium (Mg), silicon (Si), phosphorus (P), sulfur (S), titanium (Ti), chromium (Cr), iron (Fe), copper (Cu), zinc (Zn), gallium (Ga), germanium (Ge), yttrium (Y), zirconium (Zr), molybdenum (Mo), silver (Ag), barium (Ba), tungsten (W), indium (In), strontium (Sr), tin (Sn), lead (Pb), and antimony (Sb), and x≦0.45 in the fully charged state), and
wherein the solvent includes 4-chloro-1,3-dioxolan-2-one as the halogenated cyclic carbonate.
7. The nonaqueous electrolyte battery according to claim 1 , wherein the positive electrode includes, as a positive electrode active material, a positive electrode material that includes a phosphate-containing coating layer formed on at least a portion of a surface of a lithium composite oxide that contains lithium and a transition metal.
8. The nonaqueous electrolyte battery according to claim 1 , wherein the nonaqueous electrolyte is a gel electrolyte that comprises:
an electrolytic solution that includes the solvent and the electrolyte salt; and
a polymer compound that swells by absorbing the electrolytic solution.
9. A nonaqueous electrolyte battery comprising:
a positive electrode;
a negative electrode; and
a nonaqueous electrolyte that includes a solvent and an electrolyte salt,
wherein the negative electrode includes:
a gelled first negative electrode coating that contains an amorphous heteropolymolybdic acid and/or an amorphous heteropolymolybdic acid compound including one or more polyelements; and
a second negative electrode coating that originates from a halogenated cyclic carbonate of the Formula (1) below, or in at least one of unsaturated cyclic carbonates of Formulae (2) and (3) below,
where X is a F group or a Cl group, R1 and R2 are each independently a C n H 2n+1 group (0≦n≦4), and R3 is C n H 2n+1−m X n (0≦n≦4, 0≦m≦2n+1),
where R4 and R5 are each independently a C n H 2n+1 group (0≦n≦4),
where R6 to R11 are each independently a C n H 2n+1 group (0≦n≦4), and
wherein the electrolyte salt includes a lithium salt.
10. The nonaqueous electrolyte battery according to claim 9 , wherein the first negative electrode coating is formed by absorption of the electrolytic solution by the amorphous heteropolymolybdic acid and/or the amorphous heteropolymolybdic acid compound deposited into a three-dimensional mesh structure.
11. The nonaqueous electrolyte battery according to claim 10 , wherein the first negative electrode coating and the second negative electrode coating are formed in a laminar fashion.
12. The nonaqueous electrolyte battery according to claim 10 , wherein the first negative electrode coating is formed as a deeper layer, and wherein the second negative electrode coating is formed as a surface layer.
13. The nonaqueous electrolyte battery according to claim 9 ,
wherein the positive electrode includes, as a positive electrode active material, a lithium composite oxide that has a layered rock-salt crystal structure of the average composition represented by Li x MO 2 (where M is at least one element selected from cobalt (Co), nickel (Ni), aluminum (Al), manganese (Mn), boron (B), magnesium (Mg), silicon (Si), phosphorus (P), sulfur (S), titanium (Ti), chromium (Cr), iron (Fe), copper (Cu), zinc (Zn), gallium (Ga), germanium (Ge), yttrium (Y), zirconium (Zr), molybdenum (Mo), silver (Ag), barium (Ba), tungsten (W), indium (In), strontium (Sr), tin (Sn), lead (Pb), and antimony (Sb), and x≦0.45 in the fully charged state), and
wherein positive electrode includes:
a gelled first positive electrode coating that includes an amorphous polyacid and/or an amorphous polyacid compound including one or more polyelements; and
a second positive electrode coating that includes a coating originating from 4-chloro-1,3-dioxolan-2-one.
14. The nonaqueous electrolyte battery according to claim 1 , wherein the lithium salt is a boron-containing lithium salt.
15. The nonaqueous electrolyte battery according to claim 9 , wherein an upper limit charge voltage of the nonaqueous electrolyte battery is 4.35 V.
16. The nonaqueous electrolyte battery according to claim 1 , wherein a voltage of the nonaqueous electrolyte battery in a fully charged state is 4.30 V to 4.35 V.
17. The nonaqueous electrolyte battery according to claim 9 , wherein a voltage of the nonaqueous electrolyte battery in a fully charged state is 4.30 V to 4.35 V.