CN107248454A - A kind of graphene crystalline material and preparation method and application - Google Patents
A kind of graphene crystalline material and preparation method and application Download PDFInfo
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- CN107248454A CN107248454A CN201710420243.4A CN201710420243A CN107248454A CN 107248454 A CN107248454 A CN 107248454A CN 201710420243 A CN201710420243 A CN 201710420243A CN 107248454 A CN107248454 A CN 107248454A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 77
- 239000002178 crystalline material Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title abstract description 12
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000003990 capacitor Substances 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229940056319 ferrosoferric oxide Drugs 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 16
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 8
- 239000011889 copper foil Substances 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 8
- 238000003475 lamination Methods 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 4
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- 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
- Y02E60/13—Energy storage using capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of graphene crystalline material, it is made up of the component of following parts by weight：20 parts of graphene, 0.1 part~1.2 parts of ferroso-ferric oxide, 0.1 part~1.2 parts of iron powder, 0.1 part~0.5 part of activated carbon.Capacitor manufactured by graphene crystalline material of the present invention shows good electrochemical behavior, and specific capacity can reach 954F/g all in 300F/g, with very excellent energy-storage property；Moreover, the preparation technology of graphene crystalline material of the present invention is easy, safe and environment-friendly, raw material are cheap, be easy to get, and cost is low, are adapted to industrialization production.
Description
Technical field
The present invention relates to a kind of graphene crystalline material and preparation method and application.
Background technology
Capacitor, is a kind of new type of energy storage device, in the side such as portable electric appts, hybrid vehicle, Electric power car
Face is in an increasingly wide range of applications.
However, due to being limited by electrode material performance, the energy-storage property of current capacitor is still relatively low, specific capacity is led to
200F/g~400F/g often is can only achieve, such as：103680974 A etc. of A, CN of Chinese patent CN 105489398.
In order to further improve the energy-storage property of capacitor, higher specific capacity is reached, a kind of new electrode of exploitation is needed badly
Material.
The content of the invention
It is an object of the invention to provide a kind of graphene crystalline material, its can produce specific capacity be up to 304F/g~
954F/g capacitor, energy-storage property is very excellent.
A kind of graphene crystalline material that the present invention is provided, it is made up of the component of following parts by weight：Graphene 20
Part, 0.1 part~1.2 parts of ferroso-ferric oxide, 0.1 part~1.2 parts of iron powder, 0.1 part~0.5 part of activated carbon.
Further, it is made up of the component of following parts by weight：20 parts of graphene, ferroso-ferric oxide 1.0 parts~1.2
Part, 0.1 part~0.2 part of iron powder, 0.1 part~0.2 part of activated carbon.
Further, it is made up of the component of following parts by weight：It is made up of the component of following parts by weight：Stone
Black 20 parts of alkene, 1.0 parts of ferroso-ferric oxide, 0.2 part of iron powder, 0.2 part of activated carbon.
Further, described graphene is selected from single-layer graphene, bilayer graphene, few layer graphene, multi-layer graphene
In any one or it is two or more.
Further, the particle diameter of the ferroso-ferric oxide is 80nm~500nm, the particle diameter of the iron powder for 80nm~
500nm；It is preferred that, the particle diameter of the ferroso-ferric oxide is 150nm~200nm, and the particle diameter of the iron powder is 80nm~120nm.
Further, the particle diameter of the activated carbon is 10nm~50nm.
Further, described graphene crystalline material is made of using following methods：Graphene is taken, is dispersed in water,
90 ± 5 DEG C are heated to, ultrasonically treated 30 minutes, is then maintained at a temperature of 90 ± 5 DEG C, ferroso-ferric oxide, iron powder is added, mixed
After even, activated carbon is added, is stirred 5 hours, 30 minutes are stood, filtered, drying produces graphene crystalline material.
Further to the ultrasonically treated power is 500W, and the speed of the stirring is 500 revs/min.
Present invention also offers application of the above-mentioned graphene crystalline material in manufacture capacitor.
A kind of capacitor that the present invention is provided, it is made of using following methods：
A, by graphene crystalline material, polytetrafluoroethylene (PTFE), the conductive black described in claim 1~8 any one, according to
Weight proportion 90：5：5 or 85：5：10 are well mixed, plus appropriate solvent, are coated on copper foil, after drying, rolling film, cutting, system
Into electrode slice；
B, by electrode slice, barrier film, electrode slice, lamination assembling is into battery core in sequence, then with battery housing seal battery core, with
Liquid injection port is sealed, electricity is obtained toward the sulfuric acid that 2mol/L is injected in battery container by the liquid injection port that is arranged on battery container afterwards
Container.
Capacitor manufactured by graphene crystalline material of the present invention shows good electrochemical behavior, and specific capacity all exists
More than 300F/g, can reach 954F/g, with very excellent energy-storage property；Moreover, graphene crystalline material of the present invention
Preparation technology it is easy, safe and environment-friendly, raw material are cheap, be easy to get, and cost is low, are adapted to industrialization production.
Obviously, according to the above of the present invention, according to the ordinary technical knowledge and customary means of this area, do not departing from
Under the premise of the above-mentioned basic fundamental thought of the present invention, the modification of other diversified forms can also be made, replaces or changes.
Below by way of embodiment, the above to the present invention is described in further detail again；But should not be by
This scope for being interpreted as above-mentioned theme of the invention is only limitted to following example；The technology that all designs based on the present invention are realized is equal
Belong to the scope of the present invention.
Embodiment
The raw material that is used in the specific embodiment of the invention, equipment are known product, are obtained by buying commercially available prod.
Embodiment 1
1st, the preparation of graphene crystalline material
Bilayer graphene 20g is taken, is dispersed in 100ml water, 90 ± 5 DEG C, ultrasonically treated (power 500W) 30 are heated to
Minute, then it is maintained at a temperature of 90 ± 5 DEG C, adds ferroso-ferric oxide (particle diameter：150nm~200nm) 1g, iron powder (particle diameter：
80nm~120nm) 0.2g, after mixing, add activated carbon (particle diameter：10nm~50nm) 0.2g, is stirred 5 hours, stir speed (S.S.)
500 revs/min, 30 minutes are stood, is filtered, drying produces graphene crystalline material M1.
2nd, graphene crystalline material is used to manufacture capacitor
A, by above-mentioned graphene crystalline material M1, polytetrafluoroethylene (PTFE), conductive black, according to weight proportion 90：5：5 mixing are equal
It is even, plus appropriate solvent, it is coated on copper foil, after drying, rolling film, cutting, electrode slice is made；
B, by electrode slice, barrier film, electrode slice, lamination assembling is into battery core in sequence, then with battery housing seal battery core, with
Liquid injection port is sealed, electricity is obtained toward the sulfuric acid that 2mol/L is injected in battery container by the liquid injection port that is arranged on battery container afterwards
Container C1.
Embodiment 2
1st, the preparation of graphene crystalline material
Bilayer graphene 20g is taken, is dispersed in 100ml water, 90 ± 5 DEG C, ultrasonically treated (power 500W) 30 are heated to
Minute, then it is maintained at a temperature of 90 ± 5 DEG C, adds ferroso-ferric oxide (particle diameter：400nm~500nm) 1g, iron powder (particle diameter：
400nm~500nm) 0.2g, after mixing, add activated carbon (particle diameter：10nm~50nm) 0.2g, is stirred 5 hours, stir speed (S.S.)
500 revs/min, 30 minutes are stood, is filtered, drying produces graphene crystalline material M2.
2nd, graphene crystalline material is used to manufacture capacitor
A, by above-mentioned graphene crystalline material M2, polytetrafluoroethylene (PTFE), conductive black, according to weight proportion 80：10：10 mixing
Uniformly, plus appropriate solvent, it is coated on copper foil, after drying, rolling film, cutting, electrode slice is made；
B, by electrode slice, barrier film, electrode slice, lamination assembling is into battery core in sequence, then with battery housing seal battery core, with
Liquid injection port is sealed, electricity is obtained toward the sulfuric acid that 2mol/L is injected in battery container by the liquid injection port that is arranged on battery container afterwards
Container C2.
Embodiment 3
1st, the preparation of graphene crystalline material
Bilayer graphene 20g is taken, is dispersed in 100ml water, 90 ± 5 DEG C, ultrasonically treated (power 500W) 30 are heated to
Minute, then it is maintained at a temperature of 90 ± 5 DEG C, adds ferroso-ferric oxide (particle diameter：80nm~120nm) 1g, iron powder (particle diameter：
80nm~120nm) 0.2g, after mixing, add activated carbon (particle diameter：10nm~50nm) 0.2g, is stirred 5 hours, stir speed (S.S.)
500 revs/min, 30 minutes are stood, is filtered, drying produces graphene crystalline material M3.
2nd, graphene crystalline material is used to manufacture capacitor
A, by above-mentioned graphene crystalline material M3, polytetrafluoroethylene (PTFE), conductive black, according to weight proportion 85：10：5 mixing
Uniformly, plus appropriate solvent, it is coated on copper foil, after drying, rolling film, cutting, electrode slice is made；
B, by electrode slice, barrier film, electrode slice, lamination assembling is into battery core in sequence, then with battery housing seal battery core, with
Liquid injection port is sealed, electricity is obtained toward the sulfuric acid that 2mol/L is injected in battery container by the liquid injection port that is arranged on battery container afterwards
Container C3.
Embodiment 4
1st, the preparation of graphene crystalline material
Bilayer graphene 20g is taken, is dispersed in 100ml water, 90 ± 5 DEG C, ultrasonically treated (power 500W) 30 are heated to
Minute, then it is maintained at a temperature of 90 ± 5 DEG C, adds ferroso-ferric oxide (particle diameter：150nm~200nm) 1g, iron powder (particle diameter：
80nm~120nm) 0.2g, after mixing, add activated carbon (particle diameter：10nm~50nm) 0.2g, is stirred 5 hours, stir speed (S.S.)
500 revs/min, 30 minutes are stood, is filtered, drying produces graphene crystalline material M4.
2nd, graphene crystalline material is used to manufacture capacitor
A, by above-mentioned graphene crystalline material M4, polytetrafluoroethylene (PTFE), conductive black, according to weight proportion 85：5：10 mixing
Uniformly, plus appropriate solvent, it is coated on copper foil, after drying, rolling film, cutting, electrode slice is made；
B, by electrode slice, barrier film, electrode slice, lamination assembling is into battery core in sequence, then with battery housing seal battery core, with
Liquid injection port is sealed, electricity is obtained toward the sulfuric acid that 2mol/L is injected in battery container by the liquid injection port that is arranged on battery container afterwards
Container C4.
Embodiment 5
1st, the preparation of graphene crystalline material
Bilayer graphene 20g is taken, is dispersed in 100ml water, 90 ± 5 DEG C, ultrasonically treated (power 500W) 30 are heated to
Minute, then it is maintained at a temperature of 90 ± 5 DEG C, adds ferroso-ferric oxide (particle diameter：150nm~200nm) 0.2g, iron powder (grain
Footpath：80nm~120nm) 1g, after mixing, add activated carbon (particle diameter：200nm~300nm) 0.2g, is stirred 5 hours, stirring speed
500 revs/min of rate, stands 30 minutes, filters, and drying produces graphene crystalline material M5.
2nd, graphene crystalline material is used to manufacture capacitor
A, by above-mentioned graphene crystalline material M5, polytetrafluoroethylene (PTFE), conductive black, according to weight proportion 90：5：5 mixing are equal
It is even, plus appropriate solvent, it is coated on copper foil, after drying, rolling film, cutting, electrode slice is made；
B, by electrode slice, barrier film, electrode slice, lamination assembling is into battery core in sequence, then with battery housing seal battery core, with
Liquid injection port is sealed, electricity is obtained toward the sulfuric acid that 2mol/L is injected in battery container by the liquid injection port that is arranged on battery container afterwards
Container C5.
Embodiment 6
1st, the preparation of graphene crystalline material
Bilayer graphene 20g is taken, is dispersed in 100ml water, 90 ± 5 DEG C, ultrasonically treated (power 500W) 30 are heated to
Minute, then it is maintained at a temperature of 90 ± 5 DEG C, adds activated carbon (particle diameter：200nm~300nm) 0.2g, after mixing, then add
Enter ferroso-ferric oxide (particle diameter：150nm~200nm) 0.6g, iron powder (particle diameter：150nm~200nm) 0.6g, stirs 5 hours, stirs
200 revs/min of speed is mixed, 30 minutes are stood, filtered, drying produces graphene crystalline material M6.
2nd, graphene crystalline material is used to manufacture capacitor
A, by above-mentioned graphene crystalline material M6, polytetrafluoroethylene (PTFE), conductive black, according to weight proportion 85：5：10 mixing
Uniformly, plus appropriate solvent, it is coated on copper foil, after drying, rolling film, cutting, electrode slice is made；
B, by electrode slice, barrier film, electrode slice, lamination assembling is into battery core in sequence, then with battery housing seal battery core, with
Liquid injection port is sealed, electricity is obtained toward the sulfuric acid that 2mol/L is injected in battery container by the liquid injection port that is arranged on battery container afterwards
Container C6.
By tests below example, to illustrate beneficial effects of the present invention.
Test example
To capacitor C1~C6 manufactured by embodiment 1~6, respectively 0.1,0.2,0.5,1.0,2.0A/g electric current it is close
Degree is lower to carry out charge-discharge test, obtains the test result of specific capacity, is shown in Table 1.
The test result of table 1, specific capacity
The above results show, in cyclic process, and the capacitor manufactured by graphene crystalline material of the present invention shows good
Good electrochemical behavior, specific capacity can reach 954F/g all in more than 300F/g, with very excellent energy-storage property.
In summary, the capacitor manufactured by graphene crystalline material of the present invention shows good electrochemical behavior, than
Capacity can reach 954F/g all in more than 300F/g, with very excellent energy-storage property；Moreover, graphene of the present invention
The preparation technology of crystalline material is easy, safe and environment-friendly, and raw material are cheap, be easy to get, and cost is low, are adapted to industrialization production.
Claims (10)
1. a kind of graphene crystalline material, it is characterised in that：It is made up of the component of following parts by weight：20 parts of graphene,
0.1 part~1.2 parts of ferroso-ferric oxide, 0.1 part~1.2 parts of iron powder, 0.1 part~0.5 part of activated carbon.
2. graphene crystalline material according to claim 1, it is characterised in that：It is the component group by following parts by weight
Into：20 parts of graphene, 1.0 parts~1.2 parts of ferroso-ferric oxide, 0.1 part~0.2 part of iron powder, 0.1 part~0.2 part of activated carbon.
3. graphene crystalline material according to claim 2, it is characterised in that：It is the component group by following parts by weight
Into：It is made up of the component of following parts by weight：20 parts of graphene, 1.0 parts of ferroso-ferric oxide, 0.2 part of iron powder, activated carbon
0.2 part.
4. the graphene crystalline material according to claims 1 to 3 any one, it is characterised in that：Described graphene choosing
From any one in single-layer graphene, bilayer graphene, few layer graphene, multi-layer graphene or two or more.
5. the graphene crystalline material according to claims 1 to 3 any one, it is characterised in that：The ferroso-ferric oxide
Particle diameter be 80nm~500nm, the particle diameter of the iron powder is 80nm~500nm；It is preferred that, the particle diameter of the ferroso-ferric oxide is
150nm~200nm, the particle diameter of the iron powder is 80nm~120nm.
6. the graphene crystalline material according to claims 1 to 3 any one, it is characterised in that：The grain of the activated carbon
Footpath is 10nm~50nm.
7. the graphene crystalline material according to claims 1 to 3 any one, it is characterised in that：Described graphene is brilliant
Body material is made of using following methods：Graphene is taken, is dispersed in water, 90 ± 5 DEG C are heated to, ultrasonically treated 30 minutes, so
After be maintained at a temperature of 90 ± 5 DEG C, add ferroso-ferric oxide, iron powder, after mixing, add activated carbon, stir 5 hours, it is quiet
Put 30 minutes, filter, drying produces graphene crystalline material.
8. graphene crystalline material according to claim 7, it is characterised in that：The ultrasonically treated power is 500W,
The speed of the stirring is 500 revs/min.
9. application of the graphene crystalline material in manufacture capacitor described in claim 1~8 any one.
10. a kind of capacitor, it is characterised in that：It is made of using following methods：
A, by graphene crystalline material, polytetrafluoroethylene (PTFE), the conductive black described in claim 1~8 any one, according to weight
Proportioning 90：5：5 or 85：5：10 are well mixed, plus appropriate solvent, are coated on copper foil, and after drying, rolling film, cutting, electricity is made
Pole piece；
B, by electrode slice, barrier film, electrode slice, lamination assembling is into battery core in sequence, then logical then with battery housing seal battery core
The liquid injection port being arranged on battery container is crossed toward the sulfuric acid of injection 2mol/L in battery container, liquid injection port is sealed, obtains capacitor.
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| CN201710420243.4A CN107248454A (en) | 2017-06-06 | 2017-06-06 | A kind of graphene crystalline material and preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710420243.4A CN107248454A (en) | 2017-06-06 | 2017-06-06 | A kind of graphene crystalline material and preparation method and application |
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|---|---|---|---|---|
| CN102568641A (en) * | 2010-12-29 | 2012-07-11 | 海洋王照明科技股份有限公司 | Preparation method for graphene composite material loaded with nano metal particles |
| CN102623692A (en) * | 2012-03-21 | 2012-08-01 | 新疆大学 | Method for preparing anode material of ferroferric oxide and carbon composite lithium battery |
| CN103833032A (en) * | 2014-03-11 | 2014-06-04 | 中国第一汽车股份有限公司 | Graphene-based composite cathode material |
| US20140340818A1 (en) * | 2011-11-10 | 2014-11-20 | The Regent Of The University Of Colorado A Body Corporate | Supercapacitor Devices Having Composite Electrodes Formed By Depositing Metal Oxide Pseudocapacitor Materials Onto Carbon Substrates |
| CN105702957A (en) * | 2014-11-27 | 2016-06-22 | 中国科学院大连化学物理研究所 | Method for changing potential of carbon-based material electrode |
| CN105762362A (en) * | 2016-05-23 | 2016-07-13 | 四川大学 | Carbon-coated ferroferric oxide/nitrogen-doped grapheme composite material and preparation method thereof |
-
2017
- 2017-06-06 CN CN201710420243.4A patent/CN107248454A/en active Pending
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| CN102568641A (en) * | 2010-12-29 | 2012-07-11 | 海洋王照明科技股份有限公司 | Preparation method for graphene composite material loaded with nano metal particles |
| US20140340818A1 (en) * | 2011-11-10 | 2014-11-20 | The Regent Of The University Of Colorado A Body Corporate | Supercapacitor Devices Having Composite Electrodes Formed By Depositing Metal Oxide Pseudocapacitor Materials Onto Carbon Substrates |
| CN102623692A (en) * | 2012-03-21 | 2012-08-01 | 新疆大学 | Method for preparing anode material of ferroferric oxide and carbon composite lithium battery |
| CN103833032A (en) * | 2014-03-11 | 2014-06-04 | 中国第一汽车股份有限公司 | Graphene-based composite cathode material |
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