CN110931890A - Graphene dispersion liquid for lead-acid storage battery and preparation process thereof - Google Patents
Graphene dispersion liquid for lead-acid storage battery and preparation process thereof Download PDFInfo
- Publication number
- CN110931890A CN110931890A CN201911198384.1A CN201911198384A CN110931890A CN 110931890 A CN110931890 A CN 110931890A CN 201911198384 A CN201911198384 A CN 201911198384A CN 110931890 A CN110931890 A CN 110931890A
- Authority
- CN
- China
- Prior art keywords
- graphene
- dispersion liquid
- lead
- storage battery
- acid storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/08—Selection of materials as electrolytes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/182—Graphene
- C01B32/194—After-treatment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Carbon And Carbon Compounds (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a graphene dispersion liquid for a lead-acid storage battery, which is prepared from raw materials such as graphene, sodium polyacrylate, β -naphthalene sulfonic acid formaldehyde condensate sodium salt, deionized water and the like, and also discloses a preparation process of the graphene dispersion liquid for the lead-acid storage battery4S·m‑1The preparation method has the advantages that β -naphthalenesulfonic acid formaldehyde condensate sodium salt is used as the dispersing agent, sodium polyacrylate is used as the thickening agent, the cost is low, the initial performance and the cycle life of the battery are not affected, the graphene prepared by the oxidation-reduction method is used as the raw material, the reduction step in the preparation process of the graphene dispersion liquid is omitted, the preparation method is simple, the operability is high, and the preparation method is suitable for large-scale industrial production.
Description
Technical Field
The invention relates to the field of lead-acid storage battery manufacturing, in particular to a graphene dispersion liquid for a lead-acid storage battery and a preparation process thereof.
Background
Energy is a driving force of economic development, and a storage battery as a key component for energy conversion and storage occupies a very important position in the development of new energy industry, and the technical level of the storage battery becomes one of the key parts in the development of the new energy industry. In recent years, with the continuous development of advanced lead-acid storage battery technology, especially the research and development and application of AGM and EFB storage batteries for start-stop systems, lead-acid storage batteries have been more vigorous. The novel lead-acid storage battery almost gives priority to carbon materials in material application, so that the novel lead-acid storage battery becomes a research hotspot in the industry in recent years.
Graphene (Graphene) is a two-dimensional crystal composed of carbon atoms only one layer of atomic thickness. Since there is only one layer of atoms, the movement of electrons is confined to one plane, and graphene also has completely new electrical properties. Graphene is the best conductive material in the world, and the movement speed of electrons in the graphene reaches 1/300 of the speed of light, which is far higher than the movement speed of electrons in a common conductor. The graphene is added into the lead-acid storage battery electrolyte, so that the conductivity of the electrolyte can be improved, the sulfation of a negative electrode is inhibited, and the service performance of the battery in a charge state of a large-current charge-discharge part is improved. The service life of the lead-acid storage battery can reach 3-4 times that of a common lead-acid storage battery, so that the lead-acid storage battery has a wide development prospect.
Due to the hydrophobic characteristic of graphene prepared by a chemical oxidation-reduction method, the saturation concentration of the aqueous dispersion is too low and unstable, and the graphene is easy to aggregate and float on the surface of the solution. At present, a surfactant is mainly added to prepare a graphene dispersion liquid. The surfactant aqueous solution has low cost and simple and convenient operation, but the obtained graphene dispersion liquid has low concentration, and the highest value reported in the current literature is less than 1 mg/mL. For example, CN104876215A discloses a graphene aqueous dispersion and a preparation method thereof, in which graphene oxide is used as a raw material, cellulose nanocrystals are added as a dispersant to obtain a graphene oxide aqueous dispersion, and a reducing agent is added to reduce the graphene oxide aqueous dispersion to obtain a graphene dispersion. The maximum concentration of the graphene dispersion liquid prepared by the method is 0.53mg/mL, and the surfactant such as cellulose nanocrystal is added into the graphene dispersion liquid for the storage battery, so that the surfactant is remained in the system and is difficult to remove, and the initial performance and the cycle life of the battery are influenced because the surfactant is not needed in the battery.
Disclosure of Invention
In order to solve the problems, the invention provides the graphene dispersion liquid for the lead-acid storage battery, which has high concentration and does not generate adverse effect on the battery performance by adding the dispersant.
The invention also provides a preparation method of the graphene dispersion liquid for the lead-acid storage battery, which has simple and reasonable process steps.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the graphene dispersion liquid for the lead-acid storage battery is prepared from the following raw materials in parts by weight: 1-10 parts of graphene, 1-3 parts of a dispersing agent, 0.1-1 part of a thickening agent and 85-95 parts of deionized water.
Preferably, the dispersant is β -naphthalenesulfonic acid formaldehyde condensate sodium salt.
Preferably, the mass ratio of the β -naphthalenesulfonic acid-formaldehyde condensate sodium salt to the graphene is 1 (1-5).
Preferably, the thickener is sodium polyacrylate.
Preferably, the mass ratio of the sodium polyacrylate to the graphene is 1 (10-20)
Preferably, the graphene is prepared by oxidizing and reducing graphene by a hummers method.
A preparation process of a graphene dispersion liquid for a lead-acid storage battery comprises the following steps:
a) adding graphene into deionized water, and performing ultrasonic dispersion treatment for 2-4 hours under the power of 200W to obtain a graphene aqueous solution;
b) adding β -naphthalenesulfonic acid formaldehyde condensate sodium salt into the graphene aqueous solution prepared in the step a, carrying out ultrasonic dispersion treatment for 2-4 hours under the power of 200W, standing the dispersion liquid for 2 hours after ultrasonic treatment, taking the upper layer solution, carrying out centrifugal treatment for 0.5-1 hour (rotating speed of 6000r/min), and taking the upper layer solution of a centrifugal tube to prepare graphene dispersion liquid;
c) and c, adding sodium polyacrylate into the graphene dispersion liquid prepared in the step b, and stirring for 1-2 hours to prepare the graphene dispersion liquid for the lead-acid storage battery with good dispersion.
Compared with the prior art, the invention has the following advantages:
1. the graphene dispersion liquid has high concentration reaching 2mg/mL and the conductivity reaching 5.2 multiplied by 104S·m-1。
2. The β -naphthalenesulfonic acid formaldehyde condensation product sodium salt is used as a dispersing agent, and the sodium polyacrylate is used as a thickening agent, so that the method has the advantages of low cost, no influence on the initial performance and the cycle life of the battery, and the like.
3. Graphene prepared by an oxidation-reduction method is used as a raw material, and a reduction step in the preparation process of the graphene dispersion liquid is omitted.
4. The preparation method is simple, has strong operability and is suitable for large-scale industrial production.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
The graphene dispersion liquid for the lead-acid storage battery is prepared from the following raw materials, by weight, 1 part of graphene, 1 part of β -naphthalene sulfonic acid formaldehyde condensate sodium salt, 0.1 part of sodium polyacrylate and 85 parts of deionized water.
A preparation process of a graphene dispersion liquid for a lead-acid storage battery comprises the following steps:
a) adding graphene into deionized water, and performing ultrasonic dispersion treatment for 2 hours under the power of 200W to obtain a graphene aqueous solution;
b) b, adding β -naphthalenesulfonic acid formaldehyde condensate sodium salt into the graphene aqueous solution prepared in the step a, carrying out ultrasonic dispersion treatment for 2 hours under the power of 200W, standing the dispersion liquid for 2 hours after ultrasonic treatment, taking the upper layer solution, carrying out centrifugal treatment for 0.5 hour (rotating speed of 6000r/min), and taking the upper layer solution of a centrifugal tube to prepare graphene dispersion liquid;
c) and c, adding sodium polyacrylate into the graphene dispersion liquid prepared in the step b, and stirring for 1 hour to prepare the graphene dispersion liquid for the lead-acid storage battery.
Example 2
The graphene dispersion liquid for the lead-acid storage battery is prepared from the following raw materials, by weight, 5 parts of graphene, 2 parts of β -naphthalene sulfonic acid formaldehyde condensate sodium salt, 0.3 part of sodium polyacrylate and 90 parts of deionized water.
A preparation process of a graphene dispersion liquid for a lead-acid storage battery comprises the following steps:
a) adding graphene into deionized water, and performing ultrasonic dispersion treatment for 3 hours under the power of 200W to obtain a graphene aqueous solution;
b) adding β -naphthalenesulfonic acid formaldehyde condensate sodium salt into the graphene aqueous solution prepared in the step a, carrying out ultrasonic dispersion treatment for 3 hours under the power of 200W, standing the dispersion liquid for 2 hours after ultrasonic treatment, taking the upper layer solution, carrying out centrifugal treatment for 0.7 hour (rotating speed of 6000r/min), and taking the upper layer solution of a centrifugal tube to prepare graphene dispersion liquid;
c) and c, adding sodium polyacrylate into the graphene dispersion liquid prepared in the step b, and stirring for 1.5 hours to prepare the graphene dispersion liquid for the lead-acid storage battery.
Example 3
The graphene dispersion liquid for the lead-acid storage battery is prepared from the following raw materials, by weight, 10 parts of graphene, 2 parts of β -naphthalene sulfonic acid formaldehyde condensate sodium salt, 0.5 part of sodium polyacrylate and 95 parts of deionized water.
A preparation process of a graphene dispersion liquid for a lead-acid storage battery comprises the following steps:
a) adding graphene into deionized water, and performing ultrasonic dispersion treatment for 4 hours under the power of 200W to obtain a graphene aqueous solution;
b) adding β -naphthalenesulfonic acid formaldehyde condensate sodium salt into the graphene aqueous solution prepared in the step a, performing ultrasonic dispersion treatment for 4 hours under the power of 200W, standing the dispersion liquid for 2 hours after ultrasonic treatment, taking the upper layer solution, performing centrifugal treatment for 1 hour (rotating speed of 6000r/min), and taking the upper layer solution of a centrifugal tube to prepare the graphene dispersion liquid;
c) and c, adding sodium polyacrylate into the graphene dispersion liquid prepared in the step b, and stirring for 2 hours to prepare the graphene dispersion liquid for the lead-acid storage battery.
Example 4
The graphene dispersion liquid for the lead-acid storage battery is prepared from the following raw materials, by weight, 10 parts of graphene, 3 parts of β -naphthalene sulfonic acid formaldehyde condensate sodium salt, 1 part of sodium polyacrylate and 95 parts of deionized water.
A preparation process of a graphene dispersion liquid for a lead-acid storage battery comprises the following steps:
a) adding graphene into deionized water, and performing ultrasonic dispersion treatment for 4 hours under the power of 200W to obtain a graphene aqueous solution;
b) b, adding β -naphthalenesulfonic acid formaldehyde condensate sodium salt into the graphene aqueous solution prepared in the step a, carrying out ultrasonic dispersion treatment for 2 hours under the power of 200W, standing the dispersion liquid for 2 hours after ultrasonic treatment, taking the upper layer solution, carrying out centrifugal treatment for 0.5 hour (rotating speed of 6000r/min), and taking the upper layer solution of a centrifugal tube to prepare graphene dispersion liquid;
c) and c, adding sodium polyacrylate into the graphene dispersion liquid prepared in the step b, and stirring for 2 hours to prepare the graphene dispersion liquid for the lead-acid storage battery.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The graphene dispersion liquid for the lead-acid storage battery is characterized by being prepared from the following raw materials in parts by weight: 1-10 parts of graphene, 1-3 parts of a dispersing agent, 0.1-1 part of a thickening agent and 85-95 parts of deionized water.
2. The graphene dispersion liquid for the lead-acid storage battery according to claim 1, wherein the dispersing agent is β -naphthalene sulfonic acid formaldehyde condensate sodium salt.
3. The graphene dispersion liquid for the lead-acid storage battery according to claim 1, wherein the mass ratio of the β -naphthalenesulfonic acid-formaldehyde condensate sodium salt to the graphene is 1 (1-5).
4. The graphene dispersion liquid for the lead-acid storage battery according to claim 1, wherein: the thickening agent is sodium polyacrylate.
5. The graphene dispersion liquid for the lead-acid storage battery according to claim 1, wherein: the mass ratio of the sodium polyacrylate to the graphene is 1 (10-20).
6. The graphene dispersion liquid for the lead-acid storage battery according to claim 1, wherein: the graphene is prepared by oxidizing and reducing graphene by a hummers method.
7. A process for preparing a graphene dispersion for a lead-acid battery according to claim 1, characterized by comprising the following steps:
a) adding graphene into deionized water, and performing ultrasonic dispersion treatment for 2-4 hours under the power of 200W to obtain a graphene aqueous solution;
b) adding β -naphthalenesulfonic acid formaldehyde condensate sodium salt into the graphene aqueous solution prepared in the step a, carrying out ultrasonic dispersion treatment for 2-4 hours under the power of 200W, standing the dispersion liquid for 2 hours after ultrasonic treatment, taking the upper layer solution, carrying out centrifugal treatment for 0.5-1 hour (rotating speed of 6000r/min), and taking the upper layer solution of a centrifugal tube to prepare graphene dispersion liquid;
c) and c, adding sodium polyacrylate into the graphene dispersion liquid prepared in the step b, and stirring for 1-2 hours to prepare the graphene dispersion liquid for the lead-acid storage battery with good dispersion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911198384.1A CN110931890A (en) | 2019-11-29 | 2019-11-29 | Graphene dispersion liquid for lead-acid storage battery and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911198384.1A CN110931890A (en) | 2019-11-29 | 2019-11-29 | Graphene dispersion liquid for lead-acid storage battery and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110931890A true CN110931890A (en) | 2020-03-27 |
Family
ID=69846908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911198384.1A Pending CN110931890A (en) | 2019-11-29 | 2019-11-29 | Graphene dispersion liquid for lead-acid storage battery and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110931890A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876215A (en) * | 2015-05-13 | 2015-09-02 | 华中科技大学 | Reduced graphene oxide aqueous dispersion and preparation method thereof |
| CN105870451A (en) * | 2016-05-13 | 2016-08-17 | 超威电源有限公司 | Graphene dispersion solution for lead-acid storage batteries and preparation technology of graphene dispersion solution for lead-acid storage batteries |
| CN107170966A (en) * | 2017-05-04 | 2017-09-15 | 超威电源有限公司 | A kind of power lead acid battery magnetic force and cream technique |
-
2019
- 2019-11-29 CN CN201911198384.1A patent/CN110931890A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876215A (en) * | 2015-05-13 | 2015-09-02 | 华中科技大学 | Reduced graphene oxide aqueous dispersion and preparation method thereof |
| CN105870451A (en) * | 2016-05-13 | 2016-08-17 | 超威电源有限公司 | Graphene dispersion solution for lead-acid storage batteries and preparation technology of graphene dispersion solution for lead-acid storage batteries |
| CN107170966A (en) * | 2017-05-04 | 2017-09-15 | 超威电源有限公司 | A kind of power lead acid battery magnetic force and cream technique |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106602012B (en) | Flexible thin film electrode and preparation method and application thereof | |
| CN109326784B (en) | Phosphorus doped MoS2Preparation method and application of loaded graphene nanosheet | |
| CN111490238B (en) | Phenyl organic acid compound modified graphite anode material and preparation method thereof | |
| CN107768637B (en) | Preparation method of porous graphene/carbon nanotube lithium-sulfur positive electrode material | |
| CN103579588B (en) | The ternary layered composite oxides of a kind of zinc-base are used as the purposes of zinc-nickel battery electrode material | |
| CN108400297B (en) | Silicon-based lithium ion battery cathode material and preparation method thereof | |
| CN103515609B (en) | THAQ/ graphene composite material, its preparation method, anode and lithium ion battery | |
| CN113270577B (en) | Aqueous zinc ion battery and positive electrode material | |
| CN103219532A (en) | Sulfonated polyether ether ketone-based blend ion exchange membrane for flow battery, and preparation method thereof | |
| CN112635698B (en) | Negative pole piece of zinc secondary battery and preparation method and application thereof | |
| CN109713269A (en) | A kind of lithium-sulfur cell polyenoid/S composite positive pole preparation method | |
| CN106744798A (en) | A kind of method and its application that hard carbon is prepared using carbon containing biological mass shell | |
| CN108987688B (en) | Carbon-based composite material, preparation method and sodium ion battery | |
| CN106853968A (en) | A kind of preparation method of multielement codope lead carbon battery activated carbon | |
| Zhipeng et al. | Hierarchical porous carbon toward effective cathode in advanced zinc-cerium redox flow battery | |
| CN114171726A (en) | Preparation method and application of metal zinc cathode of water-based zinc ion battery | |
| CN109742403A (en) | Capture the slurry preparation method and lithium ion battery of hydrofluoric acid | |
| CN105810916B (en) | A kind of SnO2/ graphene/SnO2The preparation method of lithium ion battery negative material | |
| CN110098398B (en) | Preparation method and application of honeycomb-like sulfur-doped carbon material | |
| CN110931890A (en) | Graphene dispersion liquid for lead-acid storage battery and preparation process thereof | |
| CN106784762B (en) | Preparation method and application of nano silicon array negative electrode material | |
| CN104852074A (en) | Method for preparing all-vanadium redox flow battery positive electrolyte via electrolytic synthesis method | |
| CN111293292B (en) | Preparation method of lithium-sulfur battery positive electrode material | |
| CN110474031B (en) | Method for preparing copper-doped manganous-manganic oxide composite material by using polymeric complexing agent | |
| CN109786691B (en) | Potassium ion battery negative electrode material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200327 |
|
| RJ01 | Rejection of invention patent application after publication |