JPH09102301A - Organic electrolyte battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an organic electrolyte battery which has high capacity and high voltage by having an aprotic organic solvent solution of lithium salt as the electrolyte, and setting the specific resistances of the collectors of positive and negative electrodes to specific values or higher. SOLUTION: This organic electrolyte battery is constructed of a positive electrode 1, a negative electrode 2, collectors 3, 3' for the electrodes, a separator 5, and an electrolyte. The positive collector 3 is made from stainless steel, platinum, etc., with high-chromium high-molybdenum stainless steel being particularly suitable. The negative collector 3' is made from a material which is not alloyed with lithium, such as stainless steel, platinum, titanium, and iron. The electrolyte is an aprotic organic solvent solution of lithium salt, with the solvent being ethylene carbonate, etc. The specific resistances of the collectors of both electrodes are 10μΩ.cm or more (20 deg.C) and in particular should be 100μΩ.cm or less. Less than 10μΩ.cm, an internal short circuit may be caused and a secondary battery that ensures sufficient safety cannot be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a lithium-based organic electrolyte battery having high capacity and high voltage and high safety.

[0002]

2. Description of the Related Art Recently, a secondary battery using a conductive polymer, a transition metal oxide or the like as a positive electrode and a lithium metal or a lithium alloy as a negative electrode has a high energy density. , Has been proposed as an alternative to lead batteries.

[0003]

However, the secondary battery still has a practical problem that the capacity is significantly reduced due to deterioration of the positive electrode or the negative electrode due to repeated charging and discharging. In particular, the deterioration of the negative electrode is accompanied by the generation of moss-like lithium crystals called dendrites, and the dendrites eventually penetrate the separator due to repeated charging / discharging, causing a short circuit inside the battery. This caused safety problems such as bursting.

Recently, in order to solve the above problems, a battery using a carbon material such as graphite for the negative electrode and a lithium-containing metal oxide such as LiCoO _{2 for} the positive electrode has been proposed. This battery is a so-called rocking chair type battery in which lithium is supplied from the lithium-containing metal oxide of the positive electrode to the negative electrode by charging after the battery is assembled, and the negative electrode lithium is returned to the positive electrode by discharging. However, this battery has not yet achieved the high energy density that is a feature of lithium batteries having high voltage and high capacity.

On the other hand, a heat-treated product of an aromatic condensed polymer having an atomic ratio of hydrogen atoms / carbon atoms of 0.50 to 0.0.
The insoluble and infusible substrate having the polyacene skeleton structure of No. 5 can dope lithium in a large amount as compared with general carbon materials. When the rocking chair type battery is assembled using the insoluble and infusible substrate as the negative electrode and the lithium-containing oxide as the positive electrode, a battery having a higher capacity than that using the carbon material can be obtained.

[0006] Thus, what is important in pursuing a high capacity is to ensure safety, and for that purpose, research from various viewpoints such as a separator, a safety valve and a PTC element has been conducted. As one of the important tests for investigating the safety, there is a battery short circuit test, and for example, a test method by piercing the battery with a nail has been proposed. For this type of short circuit test, a system that generates less heat is required.

The present inventors have completed the present invention as a result of intensive studies in view of the above problems, and the present invention aims to provide a highly safe secondary battery. It is an object of the present invention to provide a highly safe secondary battery having high capacity and high voltage.

[0008]

In order to achieve the above object, the present invention has the following constitution. That is, an organic electrolyte battery comprising a positive electrode, a negative electrode, and an aprotic organic solvent solution of a lithium salt as an electrolytic solution, wherein the positive electrode and / or the negative electrode current collector has a specific resistance of 10 μΩ · cm or more. And an organic electrolyte battery. Further, the current collector volume of the positive electrode and / or the negative electrode is 10% or less of the volume of the corresponding electrode active material layer, and the thickness of the current collector of the positive electrode and / or the negative electrode is 50% or less of the thickness of the corresponding electrode. preferable. Furthermore, the positive electrode contains a metal oxide, the negative electrode is a heat-treated product of an aromatic condensed polymer, and the insoluble immiscible material has a polyacene skeleton structure in which the atomic ratio of hydrogen atoms / carbon atoms is 0.50 to 0.05. A fusible substrate is preferable, and a discharge capacity of the negative electrode is particularly preferably 400 mAh / cc or more.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. First, the basic structure of a battery according to the present invention will be described with reference to FIG. 1, which is an explanatory view of the basic structure of the battery. In this figure, (1) is a positive electrode and (2) is a negative electrode. (3) and (3 ') are current collectors for the positive electrode (1) and the negative electrode (2), respectively, and the electrodes are formed on the current collectors (3) and (3'). . The lead terminals (8) and (8 ') are connected to current collectors (3) and (3') so as not to cause a voltage drop, and one end thereof is a battery case (6). And to the top lid (7). (5) is a separator impregnated with an electrolytic solution, and in this electrolytic solution, the below-mentioned compound that produces ions that can be doped is dissolved in an aprotic organic solvent. The electrolytic solution is usually a liquid and is the above-mentioned separator.
Although it is impregnated in (5), it can be used without providing the separator (5) by forming it into a gel or solid form to prevent liquid leakage. Further, (4) is an insulating packing arranged for the purpose of preventing contact between the positive electrode (1) and the negative electrode (2) (battery case (6) and top lid (7)). Then, the positive electrode (1), the negative electrode (2) and the separator (5) are fixed in the battery case (6) so as not to cause any practical problems, and the shape of the electrode,
The size and the like are appropriately set according to the shape and performance of the intended battery.

The specific resistance of the current collector of the positive electrode and / or the negative electrode is 10 μΩ · cm or more (at 20 ° C.), and preferably 100 μΩ · cm or less.
It is sufficient that at least one of the negative electrode current collectors satisfies this condition, but it is preferable that both current collectors satisfy this condition. That is, when the specific resistances of the current collectors of the positive electrode and the negative electrode are both less than 10 μΩ · cm, a secondary battery having sufficient safety cannot be obtained. And, as a material satisfying this condition, stainless steel, platinum and the like can be cited as a positive electrode current collector,
In particular, high chromium high molybdenum-based stainless steel containing 1% or more of molybdenum and 15% or more of chromium is preferable because it has high corrosion resistance. Examples of the negative electrode current collector include materials that do not alloy with lithium, such as stainless steel, platinum, titanium, and iron. The form of the current collector is not particularly limited and may be selected according to the intended battery system, for example, foil, plate, expanded metal, punching foil, punching plate, foam. A body shape, a net shape, etc. are mentioned.

An electrode active material layer is formed on both sides or one side of the current collector or in the pores thereof. In order to obtain a more safe secondary battery, the current collector volume of the positive electrode and / or the negative electrode is less than 1 of the corresponding electrode active material layer volume.
It is preferably 0% or less, and the thickness of the current collector of the positive electrode and / or the negative electrode is preferably 50% or less of the thickness of the corresponding electrode. The current collector volume here is the volume of the current collector portion in contact with the electrode active material layer, and the electrode active material layer volume is the electrode volume that does not include the current collector volume. The positive electrode current collector corresponds to the positive electrode active material layer, and the negative electrode current collector corresponds to the negative electrode active material layer. The thickness of the current collector is the thickness of the foil-shaped or plate-shaped current collector itself, but the expanded metal-shaped or net-shaped current collector is the apparent thickness of the material including the pores. The thickness of the electrode is the thickness including the current collector.

The current collector of the present invention has a specific resistance of 10 μm.
Since it is Ω · cm or more (at 20 ° C.), if the current collecting resistance with the electrode active material layer poses a problem, coating with a conductive adhesive or a specific resistance of 10 is necessary.
A material having a thickness of μΩ · cm or less may be coated by plating, vapor deposition, or the like, but the specific resistance as a whole needs to be 10 μΩ · cm or more.

The negative electrode in the present invention preferably has a discharge capacity of 400 mAh / cc or more with respect to the volume of the negative electrode active material, and is a heat-treated product of an aromatic condensation polymer having an atomic ratio of hydrogen atoms / carbon atoms of 0. An insoluble and infusible substrate having a polyacene-based skeleton structure of 50 to 0.05 (hereinafter referred to as PA
It is preferable to use S), because a secondary battery having a high discharge capacity of 400 mAh / cc or more with respect to the volume of the negative electrode active material can be obtained. The aromatic condensation polymer is a condensation product of an aromatic hydrocarbon compound and aldehydes. As the aromatic hydrocarbon compound, it is preferable to use so-called phenols such as phenol, cresol and xylenol. For example,

Embedded image (Where x and y are each independently 0, 1 or 2
Methylene bisphenols represented by the formula), or hydroxy biphenyls or hydroxynaphthalenes. Of these, phenols are practically preferable, and phenol is particularly preferable.

As the aromatic condensation polymer,
Modified aromatic condensation polymer obtained by substituting a part of the above-mentioned aromatic hydrocarbon compound having a phenolic hydroxyl group with an aromatic hydrocarbon compound having no phenolic hydroxyl group, for example, xylene, toluene, aniline, etc., for example, phenol and xylene. It is also possible to use a condensate of aldehyde with formaldehyde, or to use a modified aromatic polymer substituted with melamine or urea. Furan resin can also be preferably used. Further, as the aldehyde, aldehydes such as formaldehyde, acetaldehyde and furfural can be used, and among them, formaldehyde is particularly preferable. The phenol-formaldehyde condensate may be of novolac type, resol type or a mixture thereof.

The PAS is the aromatic condensation polymer.
Obtained by heat-treating,
All the PASs having a polyacene skeleton structure described in JP-B No. 3-24024 and JP-B No. 3-24024 can be used, and can be produced, for example, as follows. That is, the aromatic condensed polymer is gradually heated to a suitable temperature in the range of 400 to 800 ° C. in a non-oxidizing atmosphere (including vacuum), whereby the atomic ratio of hydrogen atom / carbon atom ( Hereinafter referred to as H / C) is 0.50 to 0.
A PAS of 05, preferably 0.35-0.10 can be obtained. In addition, according to the method described in Japanese Examined Patent Publication No. 3-24024, BET of 600 m ² / g or more.
It is also possible to obtain PAS having a specific surface area by the method.
That is, a solution containing an initial condensation product of an aromatic condensation polymer and an inorganic salt such as zinc chloride is prepared, and this solution is heated and cured in a mold. The cured product thus obtained is gradually heated in a non-oxidizing atmosphere (including vacuum) to a temperature of 350 to 800 ° C., preferably to a suitable temperature in the range of 400 to 750 ° C., and then water or By sufficiently washing with dilute hydrochloric acid or the like, it is possible to obtain PAS having the above H / C and having a specific surface area by the BET method of 600 m ² / g or more.

The PAS obtained in this way
According to X-ray diffraction (CuKα), the position of the main peak is represented by 2θ and exists below 24 °, and in addition to this main peak, there is another broad peak between 41 and 46 °. It exists. This PAS has a polyacene skeleton structure in which an aromatic polycyclic structure is appropriately developed,
In addition, it is suggested that it has an amorphous structure, and lithium can be stably doped, so that it is useful as an active material for batteries.

When the above H / C exceeds 0.50,
Since the aromatic polycyclic structure is not fully developed, lithium doping and dedoping are not smoothly performed,
The charge / discharge efficiency when the battery is assembled is reduced, which is not preferable. Further, when H / C is 0.05 or less, the capacity of the battery decreases, which is not preferable.

The negative electrode of the organic electrolyte battery of the present invention is made of, for example, the above-mentioned PAS, and is formed by molding a PAS having a shape such as powder, granules or short fibers, which can be easily molded, with a binder. As this binder, a fluorine-containing resin such as polytetrafluoroethylene or polyvinylidene fluoride, or a thermoplastic resin such as polypropylene or polyethylene can be used. Among them, the fluorine-based binder is used.
And a fluorine-based binder having an atomic ratio of fluorine atoms / carbon atoms (hereinafter referred to as F / C) of 0.75 or more and less than 1.50, particularly 0.75 or more and less than 1.30 of fluorine. A system binder is preferred. Examples of the fluorine-based binder include polyvinylidene fluoride, vinylidene fluoride-3 ethylene fluoride copolymer, ethylene-4
Examples thereof include a fluorinated ethylene copolymer and a propylene-4 fluorinated ethylene copolymer, and it is also possible to use a fluorine-containing polymer in which hydrogen in the main chain is substituted with an alkyl group.
In the case of the above polyvinylidene fluoride, F / C is 1,
In the case of vinylidene fluoride-3 fluoroethylene copolymer,
When the mole fraction of vinylidene fluoride is 50% and 80%, the F / Cs are 1.25 and 1.10,
Further, in the case of a propylene-4 fluoroethylene copolymer, the F / C at a propylene mole fraction of 50% is 0.75.
Becomes Among them, polyvinylidene fluoride and a vinylidene fluoride-3fluoroethylene copolymer having a molar fraction of vinylidene fluoride of 50% or more are preferable, and polyvinylidene fluoride is practically preferable. Therefore, when these binders are used, the lithium dopeability (capacity) of PAS can be fully utilized.

As the positive electrode of the organic electrolyte battery of the present invention, the effect of the present invention is great in a high capacity battery system,
For example, Li _X CoO _2, Li _X NiO _2, Li _X Mn
O _2, Li _X FeO _2, etc. Li _X M _y O _Z (M is a metal,
A lithium-containing metal oxide capable of electrochemically doping or dedoping lithium, which may be represented by the general formula (2 or more metals), or a transition metal oxide such as cobalt, manganese, or nickel. It is preferable to use, and it is particularly preferable to use a lithium-containing oxide having a voltage of 4 V or more with respect to lithium metal. The positive electrode is formed by adding a positive electrode active material, and if necessary, a conductive material and a binder, the conductive material and the kind of the binder,
The composition and the like may be set appropriately. That is, the kind of the conductive material may be a metal powder such as metallic nickel, but it is particularly preferable that the conductive material is a carbon-based material such as activated carbon, carbon black, acetylene black or graphite. The mixing ratio varies depending on the electrical conductivity of the active material, the shape of the electrodes, etc., but it is appropriate to add 2 to 40% to the active material. Further, the binder may be one that is insoluble in the electrolytic solution described later, for example, a rubber-based binder such as SBR, a fluorine-containing resin such as polytetrafluoroethylene or polyvinylidene fluoride, or a thermoplastic such as polypropylene or polyethylene. Resin is preferably used, and the mixing ratio thereof is preferably 20% or less.

The shape of the positive electrode and the negative electrode is
Depending on the intended battery, various shapes such as a plate shape, a film shape, a column shape, or a metal foil shape can be adopted. Among them, the metal foil-shaped one is particularly useful as a collector-integrated electrode that can be applied to various batteries.

Further, the organic electrolyte battery of the present invention can improve the capacity by appropriately controlling the amount of lithium contained in the battery. For example, with respect to the negative electrode, the total amount contained in the battery can be improved. Lithium amount is 500mAh /
g or more and the amount of lithium derived from the negative electrode is 100 mA
It can be h / g or more. The total amount of lithium in the battery referred to here is the total amount of lithium derived from the positive electrode, lithium derived from the electrolytic solution, and lithium derived from the negative electrode. The lithium derived from the positive electrode is lithium contained in the positive electrode when the battery is assembled, and part or all of this lithium is supplied to the negative electrode by an operation (charging or the like) of passing a current from an external circuit. Further, the lithium derived from the electrolytic solution is lithium in the electrolytic solution contained in the separator, the positive electrode, the negative electrode and the like, and the lithium derived from the negative electrode is lithium carried on the negative electrode and derived from the positive electrode. And lithium other than lithium derived from the electrolytic solution.
The method of supporting this lithium on the negative electrode is not particularly limited as long as lithium can be supported on the negative electrode in advance before assembling the battery, but for example, by applying a constant current in an electrochemical cell having a lithium metal counter electrode. Alternatively, by applying a constant voltage, lithium can be supported on the negative electrode in advance. In addition, when lithium is supported on the negative electrode after the battery is assembled, for example, lithium metal is attached to the negative electrode so that the negative electrode and the lithium metal are electrically connected in the battery, and lithium is applied to the negative electrode in the battery.
You can take a method such as

An aprotic organic solvent is used as a solvent constituting the electrolytic solution used in the organic electrolyte battery of the present invention. Examples of the aprotic organic solvent include ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, γ-butyrolactone, acetonitrile, dimethoxyethane, tetrahydrofuran, dioxolane, methylene chloride and sulfolane. Furthermore, a mixed solution of two or more of these aprotic organic solvents can be used. The electrolyte mixed or dissolved in a single solvent may be any electrolyte capable of generating lithium ions. Examples of such an electrolyte include LiI, LiClO ₄ , and LiAs.
_{F 6, LiBF 4, LiPF 6} , LiHF 2 , and the like. Then, the electrolyte and the solvent are mixed in a sufficiently dehydrated state to form an electrolytic solution, and the concentration of the electrolyte in the electrolytic solution is at least 0.1 mol in order to reduce the internal resistance of the electrolytic solution. / L or more, and more preferably 0.2 to 1.5 mol / l.

Further, the separator used in the organic electrolyte battery of the present invention is a porous body which is durable to an electrolytic solution or an electrode active material and has continuous ventilation holes and which is not electron conductive, and is usually a glass fiber. A cloth, a non-woven fabric or a porous body made of polyethylene, polypropylene or the like is used. The thickness of this separator is preferably thin in order to reduce the internal resistance of the battery, but can be set as appropriate in consideration of the amount of electrolyte retained, flowability, strength, and the like.

The shape of the organic electrolyte battery of the present invention is as follows.
The shape is not limited to the cylindrical shape illustrated above, but may be any shape such as a coin shape, a square shape, and a box shape.

[0025]

INDUSTRIAL APPLICABILITY The organic electrolyte battery of the present invention is a very useful battery having a high capacity and a high voltage and being excellent in safety.

[0026]

【Example】

[Example 1] A phenol resin molded plate having a thickness of 0.5 mm was placed in a silicon knit electric furnace and heated at 10 ° C / N under a nitrogen atmosphere.
The temperature was raised at a rate of time, and heat treatment was performed up to 650 ° C. to synthesize PAS. The PAS plate thus obtained was pulverized with a disk mill to obtain PAS powder having an average particle size of about 8 μm. This H / C was 0.22. Next, the obtained P
AS powder 100 parts by weight, polyvinylidene fluoride powder 10
By weight, N-methylpyrrolidone as a solvent was mixed, and the obtained slurry was used to form electrode layers on both surfaces of the material shown in Table 1 to obtain a negative electrode. At this time, the total thickness of the electrode active material layer is 150 μm on both sides (75 μm on one side).
m). Further, 100 parts of LiCoO ₂ , 5 parts of graphite, 10 parts by weight of polyvinylidene fluoride powder, and N-methylpyrrolidone as a solvent were mixed, and the obtained slurry was used to form electrode layers on both surfaces of the material shown in Table 1. A positive electrode was obtained by forming. At this time, the total thickness of the electrode active material layer was 240 μm on both sides (120 μm on one side).

Lithium was used as a counter electrode for the above-mentioned negative electrode, and propylene carbonate was used as an electrolytic solution to prepare Li at a concentration of 1 mol / l.
Using a solution obtained by dissolving PF _6, per constant current (one hour,
1,000 mAh / cc of lithium was doped and supported per volume of the negative electrode active material layer by setting a current such that 30 mAh / cc of lithium was supported with respect to the volume of the negative electrode active material layer). Lithium was used as a counter electrode for the positive electrode, and propylene carbonate was used as an electrolytic solution to prepare LiP at a concentration of 1 mol / l.
Using a solution in which F ₆ was dissolved, a constant voltage of 4.2 V was applied and charging was performed until almost no current flowed. When the cylindrical battery shown in FIG. 1 was assembled using the positive electrode and the negative electrode and the battery was discharged, the negative electrode active material layer was 580 to 600 mA.
A capacity corresponding to h / cc was obtained.

Each of the positive electrode and the negative electrode is set to 2 × 20 cm ²
25 μm microporous polypropylene separator
2 (Ceranises Co., Ltd. 3500) were used and stacked as shown in FIG. That is, in the figure, (12) is a positive electrode, (13) is a negative electrode, and (11) is a separator. Then, propylene carbonate was impregnated with a solution of LiPF ₆ dissolved at a concentration of 1 mol / l, and as shown in FIG. 3, a Teflon tube (2
After being wound around 1), the outer circumference was wound with a Teflon tape (24) having a thickness of 80 μm, and a thermocouple (23) was attached to the surface to obtain a measurement unit. All of these operations were performed under an argon atmosphere. Thereafter, a stainless steel nail (22) having an outer diameter of 2.5 mm was inserted into this measuring unit, and the slope of the temperature rise of the outer peripheral portion of this unit for 3 seconds was obtained.
The results are summarized in Table 1.

[0029]

[Table 1]

[Comparative Example 1] Aluminum foil (thickness 20 μm) was used as the positive electrode current collector, and copper foil (thickness 14 μm) was used as the negative electrode current collector.
When the slope of temperature rise was determined in the same manner as in Example 1 except that was used, it was 82 ° C./min.

Example 2 100 parts by weight of the PAS powder used in Example 1, 10 parts by weight of polyvinylidene fluoride powder and N-methylpyrrolidone as a solvent were mixed, and the obtained slurry was used. Electrode layers were formed on both surfaces of the material shown in 1 to obtain a negative electrode. At this time, the total thickness of the electrode active material layer was 150 μm on both sides (75 μm on one side). Also, 100 parts of LiCoO ₂ , 5 parts of graphite,
10 parts by weight of polyvinylidene fluoride powder, N- which is a solvent
Methylpyrrolidone was mixed, and the obtained slurry was used to form electrode layers on both surfaces of the material also shown in Table 1 to obtain a positive electrode. At this time, the total thickness of the electrode active material layer was 200 μm on both sides (100 μm on one side).

Lithium was used as a counter electrode for the above-mentioned negative electrode, and propylene carbonate was used as an electrolytic solution to prepare Li at a concentration of 1 mol / l.
Using a solution obtained by dissolving PF _6, per constant current (one hour,
The current was set so that 30 mAh / cc of lithium was carried with respect to the negative electrode active material layer volume), and 850 mAh / cc of lithium was doped and carried per negative electrode active material layer volume. Lithium was used as a counter electrode for the positive electrode, and propylene carbonate was used as an electrolytic solution at a concentration of 1 mol / l LiPF.
Using a solution in which ₆ was dissolved, a constant voltage of 4.2 V was applied,
It was charged until almost no current flowed. When the cylindrical battery shown in FIG. 1 was assembled using the positive electrode and the negative electrode and the battery was discharged, a capacity corresponding to 495 mAh / cc with respect to the negative electrode active material layer was obtained. With respect to this, when the slope of temperature rise was determined in the same manner as in Example 1, it was 26 ° C./min.

[Comparative Example 2] Aluminum foil (thickness 20 μm) was used for the positive electrode current collector, and copper foil (thickness 14 μm) was used for the negative electrode current collector.
When the slope of temperature rise was determined in the same manner as in Example 2 except that was used, it was 44 ° C./min.

[Embodiment 3] No. 1 of the first embodiment. A cylindrical battery having a diameter of 18 mm and a height of 65 mm was assembled with the combination of 3. Lithium corresponding to 350 mAh / g per weight of the negative electrode PAS was previously loaded on the negative electrode in the same manner as in Example 1. The obtained battery was charged with a constant current of 200 mA and, after reaching 4.2 V, was charged by applying a constant voltage of 4.2 V for 12 hours. Then, the battery was discharged at a constant current of 100 mA to obtain a capacity of 1900 mAh. Energy density is 3
It was 70 Wh / l.

[Comparative Example 3] Aluminum foil (thickness 20 μm) was used as the positive electrode current collector, and copper foil (thickness 14 μm) was used as the negative electrode current collector.
A cylindrical battery having a diameter of 18 mm and a height of 65 mm was assembled in the same manner as in Example 3 except that was used. The negative electrode was previously prepared in the same manner as in Example 1 by 350 m per negative electrode PAS weight.
Lithium corresponding to Ah / g was supported. The obtained battery was charged with a constant current of 200 mA and, after reaching 4.2 V, was charged by applying a constant voltage of 4.2 V for 12 hours. Then, the battery was discharged at a constant current of 100 mA to obtain a capacity of 1920 mAh. The energy density was 373 Wh / l.

[0036]

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a basic configuration of an organic electrolyte battery according to the present invention.

FIG. 2 is an explanatory diagram of a configuration of a measurement unit used in an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a measuring method used in an example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Positive electrode 2 Negative electrode 3 Current collector (positive electrode) 3'Current collector (negative electrode) 4 Insulating packing 5 Separator 6 Battery case 7 Top lid 8 Lead terminal (positive electrode) 8 'Lead terminal (negative electrode)

Claims (4)

[Claims] 1. An organic electrolyte battery comprising a positive electrode, a negative electrode, and an aprotic organic solvent solution of a lithium salt as an electrolytic solution, wherein the positive electrode and / or the negative electrode current collector has a resistivity of 10 or less.
An organic electrolyte battery having a resistance of μΩ · cm or more. 2. The current collector volume of the positive electrode and / or the negative electrode is 10% or less of the volume of the corresponding electrode active material layer, and the thickness of the current collector of the positive electrode and / or the negative electrode is 50% or less of the thickness of the corresponding electrode. The organic electrolyte battery according to claim 1. 3. A polyacene-based skeleton structure in which the positive electrode contains a metal oxide and the negative electrode is a heat-treated product of an aromatic condensed polymer, and the atomic ratio of hydrogen atoms / carbon atoms is 0.50 to 0.05. The organic electrolyte battery according to claim 1 or 2, which is an insoluble and infusible substrate. 4. The organic electrolyte battery according to claim 1, wherein the discharge capacity of the negative electrode is 400 mAh / cc or more.