CN1738076A - Positive electrode preparation method for large power lithium-manganese dioxide battery - Google Patents
Positive electrode preparation method for large power lithium-manganese dioxide battery Download PDFInfo
- Publication number
- CN1738076A CN1738076A CN 200410020319 CN200410020319A CN1738076A CN 1738076 A CN1738076 A CN 1738076A CN 200410020319 CN200410020319 CN 200410020319 CN 200410020319 A CN200410020319 A CN 200410020319A CN 1738076 A CN1738076 A CN 1738076A
- Authority
- CN
- China
- Prior art keywords
- manganese dioxide
- positive electrode
- power lithium
- preparation
- dioxide battery
- 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
-
- Y02E60/12—
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a positive electrode used in high power lithium-manganese dioxide button cell and its preparing method. The method comprises: processing the electrolytic manganese dioxide with heat treatment to be abraded for active compound; in normal temperature, mixing the manganese dioxide powder and acetylene black in the proportion of 10: 0.5-10: 2 and adding polyvinylidene fluoride into the mixture as adhesive agent to prepare positive mixture (1); using the coating machine to coat said positive mixture (1) uniformly on the two surfaces of flow-collected body; pressing the height of flow-collected body under 0.2mm to be died for the high power lithium-manganese dioxide button cell. The inventive method has simple process and significant improved output power basing on reducing the thickness of electrode, while it meets the demand of high power lithium-manganese dioxide button cell.
Description
Technical field
The invention belongs to chemical power source lithium-manganese dioxide battery technical field, particularly relate to the preparation method of a kind of high-power lithium-manganese dioxide battery with positive electrode.
Background technology
At present, lithium-manganese dioxide battery has powder type and two kinds of preparation methods of paste spread type with positive electrode.All be that active material, acetylene black are that conductive agent, polytetrafluoroethylene are that binding agent is made cathode mix with manganese dioxide.The powder type preparation method is mixed into gel with cathode mix under heating condition, then by being a granulated into powdery, adding with different moulds and collector according to specification and to be pressed into column or pie electrode, and its output current density is at 2mA/cm
2Below, be applicable to button lithium-manganese dioxide battery and this low battery power of charcoal packet mode lithium-manganese dioxide battery; The paste spread type preparation method is mixed into gel with cathode mix under heating condition, it is hot-forming, is compressed on the collector, is prepared into pellet electrode, and this thickness of electrode is not less than 0.5mm, and maximum output current density is at 7mA/cm
2Below, be applicable to assembling rolling lithium-manganese dioxide battery.Therefore adopt the positive electrode of this prepared in one of two ways not only to be only applicable to assemble the lithium-manganese dioxide battery of medium and small power output, and because heating cause technology loaded down with trivial details.
Summary of the invention
The present invention provides the preparation method of a kind of high-power lithium-manganese dioxide battery with positive electrode for solving problems of the prior art.
The purpose of this invention is to provide the preparation method that a kind of power output is big, the simple high-power lithium-manganese dioxide battery of technology is used positive electrode.
The present invention adopts following technical scheme:
(1) will place as the electrolytic manganese dioxide of active material in the baking oven, after 340 ℃ of-360 ℃ of constant temperature 15-25 hour heat treatments, its taking-up;
(2) manganese dioxide after the heat treatment is ground;
(3) manganese dioxide after will pulverizing at normal temperatures and acetylene black are according to 10: 0.5-10: 2 mix, and add polyvinylidene fluoride then and are mixed into cathode mix as binding agent;
(4) directly described cathode mix is evenly coated on the aluminium foil as collector with coating machine, be depressed into 0.2mm following after, placing temperature is 45-55 ℃ of baking oven oven dry promptly becoming high power lithium-manganese dioxide battery positive electrode.
The present invention can also adopt following technical measures to realize:
The high-power lithium-manganese dioxide battery preparation method of positive electrode, the manganese dioxide of described grinding is placed on and grinds to form granularity in the mortar is that D50 is 16.1 μ m powder.
The high-power lithium-manganese dioxide battery preparation method of positive electrode, described polyvinylidene fluoride concentration is 5%-30%wt.
The high-power lithium-manganese dioxide battery preparation method of positive electrode, it is 45-55 ℃ that described cathode mix is coated in the bake out temperature that is placed on baking oven on the collector.
The high-power lithium-manganese dioxide battery preparation method of positive electrode, described electrolytic manganese dioxide heat treatment time is 15-25 hour.
Advantage and good effect that the present invention has are: the present invention is owing to selected for use polyvinylidene fluoride as binding agent, and will grind after the electrolytic manganese dioxide heat treatment as active material, can make the mixture of manganese dioxide and acetylene black be mixed into cathode mix with the polyvinylidene fluoride binding agent at normal temperatures, and adopt coating machine directly to be coated in it on collector, be coated with out the following rolling electrode of 0.2mm, reduce more than 60% than existing pellet electrode thickness, and this battery output current density is greater than 10mA/cm
2, improve 50% than the maximum output current density of existing electrode, improve the power output of lithium-manganese dioxide battery greatly, and simplified processing technology.
Description of drawings
Fig. 1 is the structural representation of a kind of high-power lithium-manganese dioxide battery with positive electrode.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, enumerate following examples now, and conjunction with figs. is described in detail as follows:
Embodiment 1
With reference to accompanying drawing 1, high-power lithium-manganese dioxide battery is a cathode mix 1 with the structure of positive electrode; Collector 2.
A kind of high-power lithium-manganese dioxide battery preparation method of positive electrode, the electrolytic manganese dioxide of buying is placed in the baking oven, be warming up to 340 ℃ of-360 ℃ of constant temperature heat-treated in 20 hours, after from baking oven, taking out, put to normal temperature, be ground into the powder that granularity D50 is 16.1 μ m with mortar, as active material; Under the normal temperature state, with the manganese dioxide powder after pulverizing with as the acetylene black of conductive agent according to 10: 0.5-10: 2 mix and stir, and are that the polyvinylidene fluoride of 5%-30%wt stirs into slurry as cathode mix 1 as the mixture of binding agent and manganese dioxide powder and acetylene black then with concentration; Adopt the coating machine of making the lithium ion cell electrode pole piece, directly that described cathode mix is 1 smooth, be coated in on the two sides of aluminium foil as collector 2 equably, after being depressed into the following rolling electrode of 0.2mm, placing temperature is that 45-55 ℃ of baking oven dried, take out the back according to different specifications and models, directly be cut into various sizes, promptly become high power lithium-manganese dioxide battery positive electrode.
Claims (5)
1. a high-power lithium-manganese dioxide battery is characterized in that: comprise following technical process with the preparation method of positive electrode:
(1) will place as the electrolytic manganese dioxide of active material in the baking oven, after 340 ℃ of-360 ℃ of constant temperature 15-25 hour heat treatments, its taking-up;
(2) manganese dioxide after the heat treatment is ground;
(3) manganese dioxide after will pulverizing at normal temperatures and acetylene black are according to 10: 0.5-10: 2 mix, and add polyvinylidene fluoride then and are mixed into cathode mix as binding agent;
(4) directly described cathode mix is evenly coated on the aluminium foil as collector with coating machine, be depressed into 0.2mm following after, placing temperature is 45-55 ℃ of baking oven oven dry promptly becoming high power lithium-manganese dioxide battery positive electrode.
2. the high-power lithium-manganese dioxide battery according to claim 1 preparation method of positive electrode, it is characterized in that: the manganese dioxide of described grinding is placed on and grinds to form granularity in the mortar is that D50 is 16.1 μ m powder.
3. the high-power lithium-manganese dioxide battery according to claim 1 preparation method of positive electrode, it is characterized in that: described polyvinylidene fluoride concentration is 5%-30%wt.
4. the high-power lithium-manganese dioxide battery according to claim 1 preparation method of positive electrode, it is characterized in that: it is 45-55 ℃ that described cathode mix is coated in the bake out temperature that is placed on baking oven on the collector.
5. the high-power lithium-manganese dioxide battery according to claim 1 preparation method of positive electrode, it is characterized in that: described electrolytic manganese dioxide heat treatment time is 15-25 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020319 CN1738076A (en) | 2004-08-17 | 2004-08-17 | Positive electrode preparation method for large power lithium-manganese dioxide battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410020319 CN1738076A (en) | 2004-08-17 | 2004-08-17 | Positive electrode preparation method for large power lithium-manganese dioxide battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1738076A true CN1738076A (en) | 2006-02-22 |
Family
ID=36080790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410020319 Pending CN1738076A (en) | 2004-08-17 | 2004-08-17 | Positive electrode preparation method for large power lithium-manganese dioxide battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1738076A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357557A (en) * | 2013-06-25 | 2013-10-23 | 中国兵器工业第二一三研究所 | Method for continuously coating high-viscosity sizing agent used for preparing positive pole piece of lithium-manganese primary cell |
| CN111769255A (en) * | 2020-07-09 | 2020-10-13 | 四川虹微技术有限公司 | Positive pole piece for high-power lithium-manganese dioxide battery and preparation method thereof |
-
2004
- 2004-08-17 CN CN 200410020319 patent/CN1738076A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357557A (en) * | 2013-06-25 | 2013-10-23 | 中国兵器工业第二一三研究所 | Method for continuously coating high-viscosity sizing agent used for preparing positive pole piece of lithium-manganese primary cell |
| CN111769255A (en) * | 2020-07-09 | 2020-10-13 | 四川虹微技术有限公司 | Positive pole piece for high-power lithium-manganese dioxide battery and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104638240B (en) | Method for preparing lithium ion battery silicon carbon composite anode material and product prepared by method | |
| CN103579605B (en) | The preparation method of active material, both positive and negative polarity and the active material of sodium ion secondary battery and use thereof | |
| CN106711461A (en) | Spherical porous silicon/carbon composite material as well as preparation method and application thereof | |
| CN103594716A (en) | Method for preparing cathode material of sodium-ion battery, namely sodium vanadium fluorophosphates | |
| CN104900862A (en) | P2 phase layered electrode material of symmetric sodium ion secondary battery and preparation method thereof | |
| CN113948681B (en) | Biomass-based hard carbon compound composite material and preparation method and application thereof | |
| CN102664267B (en) | Co-doped cathode material lithium-vanadium-phosphate and application thereof | |
| CN103839694A (en) | Graphene/metal current collector preparing method | |
| CN102891303A (en) | Lithium ion secondary battery cathode material yttrium-doped lithium titanate and its preparation method and use | |
| EP2639199A1 (en) | Heterojunction nanomaterial, cathode pole piece for lithium-ion batteries, and lithium-ion battery | |
| CN102024944A (en) | Method used for preparing anode material lithium titanate of lithium ion secondary battery | |
| CN108565427B (en) | Preparation method of carbon/lithium titanate composite material | |
| CN103579599A (en) | Preparation method of yttrium-containing lithium ion battery cathode material lithium titanate carbon-coated composite material | |
| CN105576215B (en) | A kind of surface modifying method of anode material for lithium-ion batteries | |
| CN115417462B (en) | Efficient and stable air electrode and preparation method and application thereof | |
| CN101630734A (en) | Method for preparing electrode slices by modified anode materials for lithium-ion batteries | |
| CN108899543B (en) | Slurry mixing process for composite graphite cathode of lithium ion battery | |
| CN1738076A (en) | Positive electrode preparation method for large power lithium-manganese dioxide battery | |
| CN103715408B (en) | The sol-gel process for preparing of lithium ion battery negative material zinc titanate lithium | |
| CN113506866B (en) | Carbon-coated Fe 2 O 3 Hard carbon composite material and preparation method thereof | |
| CN104733710A (en) | Lithium titanate negative electrode material and preparation method thereof | |
| CN108270000A (en) | Lithium-rich material L i1.2Ni0.176Co0.1Mn0.524O2Coating method of | |
| CN108281623A (en) | Lithium-rich cathode material coated with cobaltosic oxide protective layer | |
| CN112830483A (en) | Preparation method of high-rate graphite negative electrode material | |
| CN108807983B (en) | Preparation method of magnesium and tin doped porous lithium nickelate positive electrode material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |