CN106684372A - Formula and preparation method of lithium ion battery positive plate - Google Patents
Formula and preparation method of lithium ion battery positive plate Download PDFInfo
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- CN106684372A CN106684372A CN201510751198.1A CN201510751198A CN106684372A CN 106684372 A CN106684372 A CN 106684372A CN 201510751198 A CN201510751198 A CN 201510751198A CN 106684372 A CN106684372 A CN 106684372A
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- Prior art keywords
- positive plate
- ion battery
- formula
- battery positive
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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
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
-
- 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
-
- 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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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a formula and preparation method of a lithium ion battery positive plate. The formula comprises based on percent by weight: 85-95% of active substance, 1-5% of conductive agent and 1-5% of binding agent, wherein the active substance comprises lithium manganate and lithium iron phosphate, based on percent by weight, the lithium manganate accounts for 80-85%, the lithium iron phosphate accounts for 5-10%, the conductive agent comprises graphene, graphite and carbon black, and based on percent by weight, the ratio of the graphite to the carbon black is (1:1)-(2:1). By the formula and the preparation method of the lithium ion battery positive plate, the positive plate is relatively high in compaction density, the overdischarging of electric quantity of a battery is prevented, the service lifetime of the battery is prolonged, and the positive plate has relatively high stability and consistency.
Description
Technical field
The present invention relates to a kind of based lithium-ion battery positive plate formula and preparation method thereof, belongs to lithium-ion electric
Pond preparing technical field.
Background technology
With the progress of society, people are for the requirement more and more higher of the energy, lithium ion battery
A kind of novel energy storage cell grown up after 20 century 70s, due to high-energy, length
The advantages of life-span, low consumption, nuisanceless, memory-less effect, lithium ion battery progressively shows
Big advantage, is widely applied to the fields such as phone, computer, mobile phone, lithium ion battery mainly by
Positive electrode, electrolyte and negative material composition, at present for lithium ion battery negative material it is main
Have material with carbon element, alloy material, transition metal oxide, nitride and tin-based oxide etc., graphite with
And through modified material with carbon element be negative material the most frequently used at present, in brief, lithium ion battery it is negative
The actual capacity of pole material has breached the capacity of extensive graphite cathode, and the development of positive electrode
But it is relatively slow, so as to constrain the development speed of lithium ion battery, therefore for lithium ion
For battery, the research and development of positive electrode seems even more particularly important, existing lithium ion battery
Positive electrode mainly has electrodeless metal compound material, organic molecule material and polymeric material three major types,
Wherein inorganic metal compound material has developed into the metal of the second filial generation from the metal sulfide of the first generation
Oxide, at present using more metal oxide cathode material be cobalt acid lithium, the preparation work of cobalt acid lithium
Skill is complex, and preparation condition has high demands.
The content of the invention
(1) technical problem to be solved
To solve the above problems, the present invention proposes a kind of based lithium-ion battery positive plate formula and its preparation
Method, positive plate has preferable stability and concordance.
(2) technical scheme
A kind of based lithium-ion battery positive plate formula of the present invention, includes count by weight percentage：Activity
Material 85%～95%, conductive agent 1%～5%, binding agent 1%～5%.
Further, the active substance includes LiMn2O4 and LiFePO4, count by weight percentage,
The LiMn2O4 80%～85%, LiFePO4 5%～10%.
Further, the conductive agent is made up of Graphene, graphite and white carbon black；By weight percentage
Calculate Graphene：Graphite：White carbon black=2:1:1～2:2:1.
Further, the binding agent is PVDF resins.
A kind of preparation method of based lithium-ion battery positive plate, comprises the following steps：
Step one：Binding agent is added into the hybrid power blender for arranging vacuum, and is added corresponding
Solvent carry out high-speed stirred and be fully dissolved in solvent to binding agent, obtain mixed solution I；
Step 2：Conductive agent is sequentially added into mixed solution I, vacuum stirring is carried out 1～2 hour,
Obtain mixed solution I I；
Step 3：LiFePO4, and high speed are added for 2～3 times in mixed solution I I by formula proportion point
Stir to LiFePO4 and the LiMn2O4 of corresponding proportion, high-speed stirred to LiMn2O4 point are added after being uniformly dispersed
Dissipate uniform, rear high-speed stirred is added every time 20 minutes, finally mixing 1～2 hour, hanged
Turbid liquid I；
Step 4：Suspension I is evenly coated on collector, and is dried in vacuum drying oven,
So that solvent evaporating completely, is cooled to room temperature and obtains positive plate.
Further, the solvent that binding agent is dissolved in the step one is methyl pyrrolidone.
(3) beneficial effect
Compared with prior art, based lithium-ion battery positive plate formula of the invention and preparation method thereof, just
The compacted density of pole piece is higher, it is to avoid the mistake of battery electric quantity is put, and improves the service life of battery, just
Pole piece has preferable stability and concordance.
Specific embodiment
A kind of based lithium-ion battery positive plate formula, includes count by weight percentage：Active substance
85%～95%, conductive agent 1%～5%, binding agent 1%～5%.
Wherein, the active substance includes LiMn2O4 and LiFePO4, count by weight percentage, institute
State LiMn2O4 80%～85%, LiFePO4 5%～10%.
The conductive agent is made up of Graphene, graphite and white carbon black；Graphene count by weight percentage：
Graphite：White carbon black=2:1:1～2:2:1.
The binding agent is PVDF resins.
A kind of preparation method of based lithium-ion battery positive plate, comprises the following steps：
Step one：Binding agent is added into the hybrid power blender for arranging vacuum, and is added corresponding
Solvent carry out high-speed stirred and be fully dissolved in solvent to binding agent, obtain mixed solution I；
Step 2：Conductive agent is sequentially added into mixed solution I, vacuum stirring is carried out 1～2 hour,
Obtain mixed solution I I；
Step 3：LiFePO4, and high speed are added for 2～3 times in mixed solution I I by formula proportion point
Stir to LiFePO4 and the LiMn2O4 of corresponding proportion, high-speed stirred to LiMn2O4 point are added after being uniformly dispersed
Dissipate uniform, rear high-speed stirred is added every time 20 minutes, finally mixing 1～2 hour, hanged
Turbid liquid I；
Step 4：Suspension I is evenly coated on collector, and is dried in vacuum drying oven,
So that solvent evaporating completely, is cooled to room temperature and obtains positive plate.
The solvent that binding agent is dissolved in the step one is methyl pyrrolidone.
Embodiment described above is only that the preferred embodiment of the present invention is described, not right
The spirit and scope of the present invention are defined.On the premise of without departing from design concept of the present invention, ability
Various modifications and improvement that domain ordinary person makes to technical scheme, all should drop into this
Bright protection domain, the technology contents that the present invention is claimed all are documented in claims
In.
Claims (6)
1. a kind of formula of based lithium-ion battery positive plate, based lithium-ion battery positive plate formula, its feature exists
In：Include count by weight percentage：Active substance 85%～95%, conductive agent 1%～5%, binding agent
1%～5%.
2. the formula of based lithium-ion battery positive plate according to claim 1, it is characterised in that：Institute
Active substance is stated including LiMn2O4 and LiFePO4, count by weight percentage, the LiMn2O4
80%～85%, LiFePO4 5%～10%.
3. the formula of based lithium-ion battery positive plate according to claim 1, it is characterised in that：Institute
State conductive agent to be made up of Graphene, graphite and white carbon black；Graphene count by weight percentage：Graphite：
White carbon black=2:1:1～2:2:1.
4. the formula of based lithium-ion battery positive plate according to claim 1, it is characterised in that：Institute
Binding agent is stated for PVDF resins.
5. a kind of preparation method of based lithium-ion battery positive plate, it is characterised in that：Comprise the following steps：
Step one：Binding agent is added into the hybrid power blender for arranging vacuum, and is added corresponding
Solvent carry out high-speed stirred and be fully dissolved in solvent to binding agent, obtain mixed solution I；
Step 2：Conductive agent is sequentially added into mixed solution I, vacuum stirring is carried out 1～2 hour,
Obtain mixed solution I I；
Step 3：LiFePO4, and high speed are added for 2～3 times in mixed solution I I by formula proportion point
Stir to LiFePO4 and the LiMn2O4 of corresponding proportion, high-speed stirred to LiMn2O4 point are added after being uniformly dispersed
Dissipate uniform, rear high-speed stirred is added every time 20 minutes, finally mixing 1～2 hour, hanged
Turbid liquid I；
Step 4：Suspension I is evenly coated on collector, and is dried in vacuum drying oven,
So that solvent evaporating completely, is cooled to room temperature and obtains positive plate.
6. the preparation method of based lithium-ion battery positive plate according to claim 1, it is characterised in that：
The solvent that binding agent is dissolved in the step one is methyl pyrrolidone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510751198.1A CN106684372A (en) | 2015-11-05 | 2015-11-05 | Formula and preparation method of lithium ion battery positive plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510751198.1A CN106684372A (en) | 2015-11-05 | 2015-11-05 | Formula and preparation method of lithium ion battery positive plate |
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| Publication Number | Publication Date |
|---|---|
| CN106684372A true CN106684372A (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510751198.1A Pending CN106684372A (en) | 2015-11-05 | 2015-11-05 | Formula and preparation method of lithium ion battery positive plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698338A (en) * | 2018-12-26 | 2019-04-30 | 湖北锂诺新能源科技有限公司 | A kind of powerful graphene-based LiFePO4 pole piece of low cost and preparation method |
-
2015
- 2015-11-05 CN CN201510751198.1A patent/CN106684372A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698338A (en) * | 2018-12-26 | 2019-04-30 | 湖北锂诺新能源科技有限公司 | A kind of powerful graphene-based LiFePO4 pole piece of low cost and preparation method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170517 |
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| WD01 | Invention patent application deemed withdrawn after publication |