CN108666564B - Graphene metal power battery - Google Patents
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- CN108666564B CN108666564B CN201710196595.6A CN201710196595A CN108666564B CN 108666564 B CN108666564 B CN 108666564B CN 201710196595 A CN201710196595 A CN 201710196595A CN 108666564 B CN108666564 B CN 108666564B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention relates to a graphene metal power battery, which comprises a combination of a positive electrode, a negative electrode, a plurality of composite diaphragms and a battery shell; wherein the positive electrode comprises a positive active material and a positive current collector; the negative electrode includes a negative electrode active material and a negative electrode current collector. The positive active material is selected from one of aluminum-coated nickel cobalt lithium manganese oxide or lithium-coated nickel cobalt aluminum mixed lithium manganate or silicon-coated lithium manganate, or a composite material prepared from a graphite carbon material and a metal oxide; the positive current collector adopts aluminum foil coated with silicon three-dimensional graphene and benzene ring carbon hydrogen chloride; the negative active material is selected from a graphite carbon material or a composite material prepared from the graphite carbon material and a metal oxide; the negative current collector adopts copper foil coated with silicon three-dimensional graphene and benzene ring carbon hydrogen chloride. Therefore, the defects of low voltage, low energy, low discharge efficiency, short service life, poor safety and unstable battery structure of the traditional lithium battery are overcome, and the heat-resisting temperature of the anode and the cathode is improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a graphene metal power battery.
Background
Various types of batteries, such as primary batteries and secondary rechargeable batteries, are currently on the market. The components of the composition include lead-acid batteries, nickel-metal hydride batteries, nickel-cadmium batteries, and lithium batteries (lithium cobaltate, lithium manganate, and lithium iron phosphate). Various types of batteries can be applied to electric tools, electric bicycles, electric motorcycles, and electric automobiles. For energy storage, the battery has small capacity, low power and low efficiency, so that a plurality of batteries need to be connected in parallel and/or in series to increase the power and the capacity, thereby achieving the purpose of prolonging the service life of the product.
Lithium ionThe sub-battery is mainly composed of electrodes, a diaphragm and electrolyte. The positive active material of the lithium ion battery mainly comprises LiCoO2、LiNiO2、LiMn2O4And LiFePO4Etc.; the negative electrode active material is mainly a carbon material such as graphite or the like. In the conventional electrode manufacturing method, electrode active material particles, a conductive agent and a binder are mixed together to prepare slurry, and then the slurry is coated on the surface of a current collector, and the coated current collector is subjected to heat treatment to prepare the electrode. However, the stability of the electrode is not high, so that the charge and discharge performance of the lithium ion battery is poor, and in addition, the capacity of the lithium ion battery applying the electrode is seriously attenuated in the circulating process at high temperature.
Secondly, because each battery has a certain difference, the combination of a plurality of batteries can affect the performance of the battery, even reduce the service life of the battery and affect the use safety. In the prior art, when a pure lithium manganate battery, a nickel cobalt lithium manganate battery and other lithium ion batteries are applied to an electric vehicle and an energy storage battery, the defects of low voltage, low energy, low discharge efficiency, short service life, poor safety, unstable battery structure and the like exist.
Disclosure of Invention
The invention aims to provide a graphene metal power battery which is used for overcoming the defects of low voltage, low energy, low discharge efficiency, short service life, poor safety, unstable battery structure and the like of the traditional lithium battery.
The invention aims to provide a graphene metal power battery which has the effect of improving the heat-resisting temperature of a positive electrode and a negative electrode.
In order to achieve the above object, the present invention provides a graphene metal power battery, which includes a combination of a positive electrode, a negative electrode, a plurality of separators and a battery case, wherein the positive electrode is composed of a positive active material, an adhesive, a conductive agent and a positive current collector; the negative electrode consists of a negative electrode material, a conductive agent, a thickening agent, an adhesive and a negative electrode current collector.
The positive active material is selected from one of aluminum-coated lithium nickel cobalt manganese oxide or lithium-coated lithium nickel cobalt aluminum mixed lithium manganate or silicon-coated lithium manganate. The positive current collector adopts an aluminum foil coated with silicon three-dimensional graphene, or adopts an aluminum foil coated with silicon three-dimensional graphene and benzene ring carbon hydrogen chloride.
The negative active material can be one or more of artificial graphite, reduced graphite oxide, expanded graphite, graphene and composite materials thereof, silicon, carbon, natural graphite, mesocarbon microbeads, redox graphite, expanded graphite or hard carbon or graphite carbon materials of composite materials thereof, or composite materials prepared from one or more of the graphite carbon materials and metal oxides. The negative current collector adopts copper foil coated with silicon three-dimensional graphene, or adopts copper foil coated with silicon three-dimensional graphene and benzene ring carbon hydrogen chloride.
The adhesive of the positive electrode adopts polyvinylidene fluoride; the conductive agent of the anode adopts one or more of conductive carbon ink, graphene carbon nanotubes, conductive graphite, red copper powder, layered graphite and carbon nanofiber powder. The adhesive of the negative electrode adopts styrene butadiene rubber.
The negative active material is made of graphite carbon material and metal oxide. Wherein the metal oxide is selected from one or more oxides of iron (Fe), lithium (Li), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), manganese (Mn), sodium (Na), potassium (K), rubidium (Rb), francium (Fr) or cesium (Cs). A graphite carbon material may be used alone as the negative electrode active material.
And the positive active material can also be made of graphite carbon material and metal oxide. Wherein the metal oxide is selected from one or more oxides of lithium (Li), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), manganese (Mn), sodium (Na), potassium (K), rubidium (Rb), francium (Fr) or cesium (Cs).
The positive electrode, the negative electrode and the diaphragm between the positive electrode and the negative electrode form an electric core, and the electric core adopts a lamination type structure that the diaphragm, the negative electrode, the other diaphragm and the positive electrode are sequentially arranged.
The positive active material comprises the following components in percentage by weight, preferably 45% of lithium manganate or silicon-coated lithium manganate and the percentage by weight of aluminum-coated lithium nickel cobalt manganese or lithium-coated lithium nickel cobalt aluminum: and 55 percent. In the process of aluminum-coated lithium nickel cobalt manganese oxide, the nickel cobalt manganese is composed of three elements: the weight ratio of aluminum is 0.983: 0.017.
the positive electrode active material: the conductive agent: the preferred ratio of the adhesive is 84%: 10.5%: 5.5 percent.
The conductive agent may comprise carbon nanofibers, conductive carbon black (SP), and conductive graphite (KS-6). The preferred ratio is carbon nanofiber: conductive carbon black: conductive graphite 4.55%: 2.73%: 2.73 percent. The conductive agent can also comprise red copper powder, layered (flake) graphite (SFG-6), conductive carbon black, graphene and carbon nanotubes, wherein the weight percentage of the conductive carbon black is 1 percent, the weight percentage of the graphene is 0.4 percent, and the weight percentage of the carbon nanotubes is 1.6 percent or 3 percent of the red copper powder.
The invention has the beneficial effects that:
the invention provides a graphene metal power battery which is used for overcoming the defects of low voltage, low energy, low discharge efficiency, short service life, poor safety, unstable battery structure and the like of the traditional lithium battery.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Reference numerals
10: a battery; 12: an electric core; 14: a battery case; 20: a positive electrode; 200: a positive electrode active material; 202: a positive current collector; 22: a negative electrode; 220: a negative electrode material; 222: a negative current collector; 24: a diaphragm.
Detailed Description
Referring to fig. 1, the present embodiment provides a battery 10, in which the battery 10 has a structure in which a plurality of battery cells 12 are combined, and each battery cell 12 is accommodated in a battery case 14. The cell 12 includes a positive electrode 20, a negative electrode 22, and a separator 24. Wherein the separator 24 is a ceramic polyolefin composite separator or a polyvinyl chloride separator, and is disposed between the positive electrode 20 and the negative electrode 22. In addition, one piece of the diaphragm 24 is also arranged between two adjacent battery cores 12. Thereby, each of the battery cells 12 forms a laminated structure in which the separator 24, the negative electrode 22, the separator 24, and the positive electrode 20 are connected in series. The battery case 14 may be filled with a polymer gel electrolyte (not shown) as necessary.
The positive electrode 20 is composed of a positive active material 200, an adhesive (not shown), a conductive agent (not shown), and a positive current collector 202.
The positive electrode active material 200 is a mixture. The positive active material 200 is formed by coating lithium nickel cobalt manganese oxide or lithium nickel cobalt aluminum with aluminum, and coating lithium manganese oxide with mixed lithium manganate or silicon-containing lithium manganate with lithium. Further, in the mixed material, the weight percentage of the lithium nickel cobalt manganese oxide coated with aluminum or the lithium nickel cobalt aluminum coated with lithium and the weight percentage of the lithium manganate coated with silicon or the lithium manganate coated with silicon are 40-50%: 50 to 60 percent. One of the preferable proportions is that the weight percentage of the lithium nickel cobalt manganese oxide coated with aluminum or the lithium nickel cobalt aluminum coated with lithium is 45 percent with the weight percentage of the lithium manganate or the silicon-coated lithium manganate: and 55 percent.
The adhesive adopts polyvinylidene fluoride; the conductive agent adopts one or more of conductive carbon ink, red copper powder, graphene carbon nanotubes, conductive graphite, layered graphite and carbon nanofiber powder; the positive current collector 202 is made of aluminum foil coated with three-dimensional graphene silicon, or aluminum foil coated with silicon three-dimensional graphene and benzene ring carbon hydrogen chloride.
The conductive agent can comprise nano carbon fiber, red copper powder, conductive carbon black (SP) and conductive graphite (KS-6). Based on the whole part of the conductive agent, the weight percentage of the carbon nanofibers, the conductive carbon black (SP), the conductive graphite (KS-6) and the layered (flake) graphite (SFG-6) can be the following carbon nanofibers: conductive carbon black or red copper powder: 1-9% of conductive graphite: 1-5%: 1 to 5 percent. One preferred ratio is carbon nanofibers: conductive carbon black or red copper powder: conductive graphite 4.55%: 2.73%: 2.73 percent.
The other component of the conductive agent can comprise red copper powder, conductive carbon black, graphene and carbon nanotubes, wherein the conductive carbon black accounts for 1 percent by weight, the graphene accounts for 0.4 percent by weight, the carbon nanotubes accounts for 1.6 percent by weight and the red copper powder accounts for 3 percent by weight based on the whole conductive agent.
Next, of the materials constituting the positive electrode 20, the positive electrode active material: the conductive agent: the binder (polyvinylidene fluoride, PVDF) can be 80% to 95%: 3-15%: 2-10%. One of the preferred ratios is that of the positive electrode active material: the conductive agent: the adhesive (polyvinylidene fluoride, PVDF) is 84%: 10.5%: 5.5 percent. The positive electrode 20 contains a dispersant (NMP) having a mass at least three times that of the binder (PVDF). The positive current collector 202 is an aluminum foil coated with silicon three-dimensional graphene, or an aluminum foil coated with silicon three-dimensional graphene and benzene ring carbon hydrogen chloride.
The negative electrode 22 is composed of a negative active material 220, a conductive agent (not shown), a thickener (not shown), an adhesive (not shown), and a negative current collector 222. The negative electrode material 220 is a graphite carbon material made of one or more of artificial graphite, silicon, graphene, nano carbon, natural graphite, mesocarbon microbeads, redox graphite, expanded graphite or hard carbon or a composite material thereof, or a composite material made of one or more of the graphite carbon materials and a metal oxide; the negative current collector 222 is made of copper foil coated with three-dimensional graphene silicon, or made of copper foil coated with silicon three-dimensional graphene and cyclic carbon hydrogen chloride of benzene ring. The adhesive is styrene butadiene rubber.
Further, the anode material 220: conductive agent: thickener (CMC): the binder (SBR) may be 90% to 98%: 0-4%: 1-5%: 1 to 5 percent. One preferred ratio is the negative electrode material (nanocarbon): the conductive agent: the thickener (CMC): the binder (SBR) is 93%: 2%: 3%: 2 percent.
As described above, the positive current collector 202 and the negative current collector 222 are both a structure having a graphite composite film. The structure of the graphite composite film can be prepared by attaching benzene ring hydrocarbon chloride to the surface of a selected metal film by a vapor deposition method (CVD) on the surface of a predetermined metal film, such as the surface of an aluminum foil and a copper foil, to form a thin layer. Then depositing silicon graphene on the metal film with the benzene ring hydrocarbon chlorine thin layer. Wherein the thickness of the benzene ring hydrocarbon chlorine thin layer is less than 20nm, and the thickness of the silicon graphene is 1-3 μm.
Thus, the surfaces of the positive current collector 202 and the negative current collector 222 have the structure of the benzene ring hydrocarbon chlorine thin layer and the three-dimensional graphene silicon, which not only can improve the conductivity and the capacitance, but also has the characteristic of withstanding the high temperature of 200 to 290 ℃. Therefore, the positive current collector is an aluminum foil coated with silicon three-dimensional graphene and benzene ring carbon hydrogen chloride; the negative current collector is a copper foil coated with silicon three-dimensional graphene and benzene ring carbon hydrogen chloride.
In addition, the negative active material is made of graphite carbon material and metal oxide, wherein the metal oxide is selected from one or more oxides of lithium (Li), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), manganese (Mn), sodium (Na), potassium (K), rubidium (Rb), francium (Fr) or cesium (Cs). The negative electrode active material may be a graphite carbon material alone. Similarly, the positive active material may be formed of graphite carbon and metal oxide selected from one or more oxides of lithium (Li), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), manganese (Mn), sodium (Na), potassium (K), rubidium (Rb), francium (Fr) or cesium (Cs) as the negative active material.
The preparation method of the active material composed of the graphite carbon material and the metal oxide comprises the following steps: fully grinding one or more metal oxides and uniformly mixing to obtain a metal oxide mixture; and adding glucose aqueous solution, drying, and performing a surface carbon coating process in a nitrogen atmosphere to obtain the composite material with the carbon-coated surface.
It is noted that the metal oxide used at least comprises iron oxide (Fe)2O3). Secondly, two or more metal oxides are adopted, and the mole ratio of the iron oxide or other metal oxides can be iron oxide: the other metal oxide is equal to one-third to one (1/3: 1), and the moles of the iron oxide add up with the other metal oxide species. For example, a metal oxide a is mixed with iron oxide, wherein the molar ratio of the metal oxide a to the iron oxide is 1: 1/3.
If the metal oxide A, the metal oxide B and the ferric oxide are mixed, the molar ratio is that the metal oxide A: the metal oxide B: the ferric oxide is 1: 1: 2/3 (2/3 for iron oxide since the mixture contains two other metal oxides in addition to iron oxide).
If the metal oxide A, the metal oxide B, the metal oxide C and the iron oxide are mixed, the molar ratio is that the metal oxide A: the metal oxide B: metal oxide C: the ferric oxide is 1: 1: 1: 3/3 (3/3 for iron oxide since the mixture contains three other metal oxides in addition to iron oxide). Similarly, taking metal oxide A, metal oxide B and metal oxide C: and metal oxide D and iron oxide are mixed, and the molar ratio is that the metal oxide A: the metal oxide B: metal oxide C: metal oxide D: the ferric oxide is 1: 1: 1: 1: 4/3. The number of moles of the iron oxide may be added up by the number of moles of the other metal oxides. The metal oxide may be selected from metal oxides of lithium (Li), cobalt (Co), nickel (Ni), copper (Cu), manganese (Mn), sodium (Na), potassium (K), rubidium (Rb), francium (Fr), or cesium (Cs), in addition to iron oxide.
The weight ratio of the graphite carbon material to the metal oxide in the negative active material may be: graphite accounts for 50 to 100 percent, and metal oxide accounts for 0 to 50 percent; in other words, the negative electrode active material of the present embodiment may be made of a graphite carbon material.
In addition to adjusting the weight ratio of the aluminum-coated lithium nickel cobalt manganese oxide to the lithium manganese oxide in the positive active material 200, the present embodiment further increases the components of graphene and carbon nanotubes, thereby improving the activity of the positive electrode. And then, the positive current collector 202 and the negative current collector 222 adopt metal (aluminum foil and copper foil) coated with silicon three-dimensional graphene, so that the charge and discharge rate and the consistency of the battery pack can be improved. Therefore, the lithium battery has the effects of solving the problems of low voltage, low energy, low discharge efficiency, short service life, poor safety and unstable battery structure of the lithium battery.
When the positive active material and the negative active material are both composite materials of graphite carbon material coated with metal oxide, appropriate voltage and large current are needed to activate the positive current collector 202 and the negative current collector 222 in advance, so that current can be generated between the positive electrode and the negative electrode.
The preferred embodiments and design drawings of the present invention are illustrative only and not intended to limit the scope of the claims of the present invention, which should be construed as embodying the invention in an equivalent manner and not as imposing limitations upon the scope of the claims.
Claims (9)
1. A graphene metal power battery comprises a positive electrode, a negative electrode, a diaphragm arranged between the positive electrode and the negative electrode, and a battery shell used for containing the combination of the positive electrode, the negative electrode and the diaphragm, and is characterized in that:
the positive electrode is composed of a positive active material, an adhesive, a conductive agent and a positive current collector, wherein:
the positive active material is a mixture of aluminum-coated lithium nickel cobalt manganese oxide and lithium manganate, or a composite material prepared from a graphite carbon material and a metal oxide; the adhesive adopts polyvinylidene fluoride; the conductive agent adopts at least two of conductive carbon black, red copper powder, graphene, a carbon nanotube, conductive graphite and carbon nanofiber;
the positive current collector is formed by attaching benzene ring hydrocarbon chlorine to the surface of an aluminum foil by using a vapor deposition method to form a benzene ring hydrocarbon chlorine thin layer with the thickness of less than 20nm, and then depositing silicon three-dimensional graphene on the benzene ring hydrocarbon chlorine thin layer, wherein the thickness of the silicon three-dimensional graphene is 1-3 mu m;
the negative electrode is composed of a negative electrode material, a conductive agent, a thickening agent, an adhesive and a negative electrode current collector, wherein:
the negative electrode material is a metal oxide mixture obtained by fully grinding and uniformly mixing one or more metal oxides; adding glucose aqueous solution, drying, and performing surface carbon coating in nitrogen atmosphere to obtain the composite material;
the negative current collector is formed by attaching benzene ring hydrocarbon chlorine to the surface of a copper foil by a vapor deposition method to form a benzene ring hydrocarbon chlorine thin layer with the thickness of less than 20nm, and then depositing silicon three-dimensional graphene on the benzene ring hydrocarbon chlorine thin layer, wherein the thickness of the silicon three-dimensional graphene is 1-3 mu m.
2. The graphene metal power battery of claim 1, wherein: the graphite carbon material is selected from one or more of artificial graphite, graphene, nano carbon, natural graphite, mesocarbon microbeads, redox graphite, expanded graphite or hard carbon materials, or a composite material formed by the materials and silicon.
3. The graphene metal power battery of claim 1, wherein: the positive active material comprises the following components in percentage by weight: 40% -50% of lithium manganate: 50 to 60 percent.
4. The graphene metal power battery of claim 1, wherein: the positive electrode active material: the conductive agent: the weight percentage of the adhesive is 80% -95%: 3-15%: 2-10%.
5. The graphene metal power battery of claim 1, wherein: the conductive agent of the positive electrode comprises carbon fibers, conductive carbon black, red copper powder and conductive graphite, wherein the carbon fibers are as follows by taking the whole conductive agent as a reference: conductive carbon black: the weight percentage of the conductive graphite is 1-9%: 1-5%: 1-5%, or carbon fiber: red copper powder: the weight percentage of the conductive graphite is 1-9%: 1-5%: 1 to 5 percent.
6. The graphene metal power battery of claim 1, wherein: the negative electrode is composed of a negative electrode material, a conductive agent, a thickening agent, an adhesive and a negative electrode current collector, wherein the negative electrode material: conductive agent: thickening agent: 90-98% of an adhesive by weight: 0-4%: 1-5%: 1 to 5 percent.
7. The graphene metal power battery of claim 1, wherein: the metal oxide used for the positive active material and the negative active material is selected from two or more of oxides of lithium, iron, cobalt, nickel, copper, manganese, sodium, potassium, rubidium, francium or cesium.
8. The graphene metal power battery of claim 1, wherein: the metal oxide of the negative electrode active material at least contains iron oxide and another metal oxide, and the molar number of the another metal oxide to the molar number of the iron oxide is 1: 1/3, respectively; and the mole number of the ferric oxide is determined according to the following ratio of 1: 1/3 are added in equal amounts.
9. The graphene metal power battery of claim 1, wherein: in the composite material composed of the graphite carbon material and the metal oxide in the positive electrode active material, the weight percentage of the graphite carbon material is 50-100%.
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| CN104103824A (en) * | 2013-04-02 | 2014-10-15 | 深圳普益电池科技有限公司 | High energy power battery and manufacturing method thereof |
| TW201603352A (en) * | 2014-07-09 | 2016-01-16 | Wei-Hao Liao | Graphene battery and manufacturing method of electrode plate thereof |
| TW201615752A (en) * | 2014-10-28 | 2016-05-01 | 台虹科技股份有限公司 | Polyimide polymer, polyimide film, and flexible copper-coated laminate |
| CN105186004A (en) * | 2015-10-09 | 2015-12-23 | 南阳师范学院 | Copper current collector for lithium-ion battery anodes as well as preparation method and application of copper current collector |
| CN105762366A (en) * | 2016-05-04 | 2016-07-13 | 江苏深苏电子科技有限公司 | Composite current collector of lithium ion battery and manufacturing method of composite current collector |
| CN105958079A (en) * | 2016-05-26 | 2016-09-21 | 宁波维科电池股份有限公司 | Graphene composite coating layer aluminum foil and lithium ion battery applying same |
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