CN104475755A - Preparation method of spheroidal ultrafine silver powder for front surface of solar cell - Google Patents
Preparation method of spheroidal ultrafine silver powder for front surface of solar cell Download PDFInfo
- Publication number
- CN104475755A CN104475755A CN201410839222.2A CN201410839222A CN104475755A CN 104475755 A CN104475755 A CN 104475755A CN 201410839222 A CN201410839222 A CN 201410839222A CN 104475755 A CN104475755 A CN 104475755A
- Authority
- CN
- China
- Prior art keywords
- solar cell
- silver powder
- preparation
- reaction system
- front side
- 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
Landscapes
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention relates to a preparation method of spheroidal ultrafine silver powder for the front surface of a solar cell, and belongs to the technical field of preparation of silver powder. The invention aims at solving the technical problem about provision of the preparation method for the spheroidal ultrafine silver powder for the front surface of the solar cell, which has the advantages that the method is easy to operate, the obtained silver powder is high in tap density, high in purity and uniform in particle size and shape. According to the adopted technical scheme, the preparation method of the spheroidal ultrafine silver powder for the front surface of the solar cell comprises the following steps of dissolving 100 parts of silver nitrate in water, and adding 0.2 to 0.5 parts of polyvinylpyrrolidone into a solution of the silver nitrate to obtain a reaction system A; dissolving 60 to 90 parts of vitamin C in water, and adding 0.3 to 0.5 parts of Gum acabic powder and 15 to 17.5 parts of stabilizing agent (dilute sulphuric acid) into a solution of the vitamin C to obtain a reaction system B; slowly pouring the reaction system A into the reaction system B with stirring, reacting for 30 to 40 minutes, washing, leaching and drying the obtained product, and sieving the obtained power in ultrasonic vibration to obtain the spheroidal ultrafine silver powder for the front surface of the solar cell.
Description
Technical field
The present invention relates to a kind of preparation method of solar cell front side silver paste class spherical super fine silver powder, belong to the preparing technical field of silver powder.
Background technology
Along with socioeconomic development and the mankind, the demand to the energy constantly increases, and the finiteness of fossil energy and the impact in use caused global climate and environment have caused the great attention of people.Therefore, present people are concerned about the utilization to renewable resources such as wind energy, water energy, solar cells more and more, and wherein solar cell is the most noticeable.Along with being announced to the world splendidly of solar cell battery, its solar cell cell piece conductive silver paste is also constantly updating, is updating, and it is also improving constantly the requirement of silver powder.
For solar cell front side silver paste, after requiring its sintering, silverskin compactness of delete line wants high, and thus it is for the higher tap density of the requirement of silver powder, and under the electrical property not affecting cell piece, it also requires to have highly purified physical property to silver powder.Front side silver paste silver powder performance external is at present all relatively good, but its price is also very high comparatively speaking.And more domestic positive silver powder do reasonablely also has, but price is not low comparatively speaking yet.
For the present situation of current domestic and international market, the preparation method of a kind of solar cell front side silver paste class spherical super fine silver powder that the present invention relates to, its advantage of lower cost, preparation method are simple, purity is relatively high, and it is also relatively good to the controllability of particle diameter.
Summary of the invention
For the deficiency that prior art exists, it is simple to operate that the object of the invention is to provide a kind of method, and the silver powder tap density obtained is high, purity is high, the preparation method of granularity form uniform solar cell front side silver paste class spherical super fine silver powder.
To achieve these goals, the technical solution used in the present invention is: a kind of preparation method of solar cell front side silver paste class spherical super fine silver powder, comprises following step:
(1) by soluble in water for silver nitrate 100 parts, add polyvinylpyrrolidone 0.2-0.5 part, obtain reaction system A;
(2) by soluble in water for vitamin C 60-90 part, add gum arabic powder 0.3-0.5 part, stabilizing agent (dilute sulfuric acid), obtain reaction system B, wherein the concentration of dilute sulfuric acid is 2.0mol/L, and consumption is 15-17.5 part;
(3) under stirring, above-mentioned reaction system A is slowly poured in B, reaction 30-40 minute, the product obtained is carried out siphon pure water cleaning 6-8 time, suction filtration, dries under 55-60 DEG C of condition, then is sieved under vibration of ultrasonic wave sieve by the powder obtained, sieve number is 400-500 order, obtains solar cell front side silver paste class spherical super fine silver powder.
The present invention adopts dilute sulfuric acid as stabilizing agent.
(1) so this project adopts the less dilute sulfuric acid of consumption as stabilizing agent, the SO in reaction system is made
4 2-constantly and Ag
+form AgSO
4reaction intermediate, thus control its reaction rate, make size tunable higher.And because of dilute sulfuric acid consumption less, make the silver powder purity prepared also relatively high.
(2) the present invention adopts ascorbic acid as reducing agent, because its reducing property of ascorbic acid is gentleer, and its in acid condition reaction rate gentleer, thus the reaction rate of reaction system can be controlled further, make size tunable higher.
(3) the present invention adopts PVP(polyvinylpyrrolidone) and the longer dispersant of this two kinds of carbochains of gum arabic powder, control the growth of silver-colored nucleus, and not only have dispersion effect in PVP reaction system and have certain reaction induced property, can fast reaction speed, thus can the reaction rate of the further hierarchy of control, size tunable is more increased.
Ensure that the particle diameter D50 of final products is at 1 ~ 2 microns by above measure, purity is more than 99.8%.
Compared with prior art the present invention has following beneficial effect.
(1) the present invention adopt, the dilute sulfuric acid of small amount as stabilizing agent, water-soluble good PVP(polyvinylpyrrolidone) and gum arabic powder as dispersant, thus be convenient to clean, the silver powder purity drawn is high.
(2) the present invention adopts the comparatively gentle ascorbic acid of reduction effect as reducing agent, and silver powder size tunable is higher.
(3) the silver powder diameter of particle that finally obtains of the present invention is at 1 ~ 2 microns, and purity is more than 99.8%, and powder purity and particle diameter are all obviously better than existing level.
Detailed description of the invention
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with detailed description of the invention, setting forth the present invention further.
Embodiment 1:
A preparation method for solar cell front side silver paste class spherical super fine silver powder, comprises following step:
(1) by soluble in water for silver nitrate 100 parts, add polyvinylpyrrolidone 0.2 part, obtain reaction system A;
(2) by soluble in water for vitamin C 60 parts, add gum arabic powder 0.3 part, stabilizing agent (dilute sulfuric acid), obtain reaction system B, wherein the concentration of dilute sulfuric acid is 2.0mol/L, and consumption is 15 parts;
(3) under stirring, above-mentioned reaction system A is slowly poured in B, react 30 minutes, the product obtained is carried out siphon pure water and cleans 6 times, suction filtration, dries under 55 DEG C of conditions, then is sieved under vibration of ultrasonic wave sieve by the powder obtained, sieve number is 400 orders, obtains solar cell front side silver paste class spherical super fine silver powder.
Embodiment 2:
A preparation method for solar cell front side silver paste class spherical super fine silver powder, comprises following step:
(1) by soluble in water for silver nitrate 100 parts, add polyvinylpyrrolidone 0.5 part, obtain reaction system A;
(2) by soluble in water for vitamin C 90 parts, add gum arabic powder 0.5 part, stabilizing agent (dilute sulfuric acid), obtain reaction system B, wherein the concentration of dilute sulfuric acid is 2.0mol/L, and consumption is 17.5 parts;
(3) under stirring, above-mentioned reaction system A is slowly poured in B, react 40 minutes, the product obtained is carried out siphon pure water and cleans 8 times, suction filtration, dries under 60 DEG C of conditions, then is sieved under vibration of ultrasonic wave sieve by the powder obtained, sieve number is 500 orders, obtains solar cell front side silver paste class spherical super fine silver powder.
Embodiment 3:
A preparation method for solar cell front side silver paste class spherical super fine silver powder, comprises following step:
(1) by soluble in water for silver nitrate 100 parts, add polyvinylpyrrolidone 0.3 part, obtain reaction system A;
(2) by soluble in water for vitamin C 70 parts, add gum arabic powder 0.4 part, stabilizing agent (dilute sulfuric acid), obtain reaction system B, wherein the concentration of dilute sulfuric acid is 2.0mol/L, and consumption is 16 parts;
(3) under stirring, above-mentioned reaction system A is slowly poured in B, react 35 minutes, the product obtained is carried out siphon pure water and cleans 7 times, suction filtration, dries under 55 conditions, then is sieved under vibration of ultrasonic wave sieve by the powder obtained, sieve number is 400 orders, obtains solar cell front side silver paste class spherical super fine silver powder.
Embodiment 4:
A preparation method for solar cell front side silver paste class spherical super fine silver powder, comprises following step:
(1) by soluble in water for silver nitrate 100 parts, add polyvinylpyrrolidone 0.4 part, obtain reaction system A;
(2) by soluble in water for vitamin C 80 parts, add gum arabic powder 0.3 part, stabilizing agent (dilute sulfuric acid), obtain reaction system B, wherein the concentration of dilute sulfuric acid is 2.0mol/L, and consumption is 17 parts;
(3) under stirring, above-mentioned reaction system A is slowly poured in B, react 33 minutes, the product obtained is carried out siphon pure water and cleans 8 times, suction filtration, dries under 57 DEG C of conditions, then is sieved under vibration of ultrasonic wave sieve by the powder obtained, sieve number is 500 orders, obtains solar cell front side silver paste class spherical super fine silver powder.
Embodiment 5:
A preparation method for solar cell front side silver paste class spherical super fine silver powder, comprises following step:
(1) by soluble in water for silver nitrate 100 parts, add polyvinylpyrrolidone 0.3 part, obtain reaction system A;
(2) by soluble in water for vitamin C 70 parts, add gum arabic powder 0.3 part, stabilizing agent (dilute sulfuric acid), obtain reaction system B, wherein the concentration of dilute sulfuric acid is 2.0mol/L, and consumption is 16 parts;
(3) under stirring, above-mentioned reaction system A is slowly poured in B, react 36 minutes, the product obtained is carried out siphon pure water and cleans 6 times, suction filtration, dries under 60 DEG C of conditions, then is sieved under vibration of ultrasonic wave sieve by the powder obtained, sieve number is 500 orders, obtains solar cell front side silver paste class spherical super fine silver powder.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention or principal character.Therefore, no matter from which point, above-mentioned embodiment of the present invention all can only be thought explanation of the present invention and can not limit invention, claims indicate scope of the present invention, and scope of the present invention is not pointed out in above-mentioned explanation, therefore, any change in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (5)
1. a solar cell front side silver paste preparation method for class spherical super fine silver powder, is characterized in that, comprises following step:
(1) by soluble in water for silver nitrate 100 parts, add polyvinylpyrrolidone 0.2-0.5 part, obtain reaction system A;
(2) by soluble in water for vitamin C 60-90 part, add gum arabic powder 0.3-0.5 part, dilute sulfuric acid 15-17.5 part, obtain reaction system B;
(3) under stirring, above-mentioned reaction system A is slowly poured in B, reaction 30-40 minute, the product obtained is cleaned, suction filtration, dry, again the powder obtained is sieved under vibration of ultrasonic wave sieve, obtain solar cell front side silver paste class spherical super fine silver powder.
2. the preparation method of a kind of solar cell front side silver paste class spherical super fine silver powder according to claim 1, is characterized in that, the concentration of the dilute sulfuric acid described in step (2) is 2.0mol/L.
3. the preparation method of a kind of solar cell front side silver paste class spherical super fine silver powder according to claim 1, is characterized in that, the cleaning described in step (3) is siphon pure water cleaning 6-8 time.
4. the preparation method of a kind of solar cell front side silver paste class spherical super fine silver powder according to claim 1, it is characterized in that, the bake out temperature described in step (3) is 55-60 DEG C.
5. the preparation method of a kind of solar cell front side silver paste class spherical super fine silver powder according to claim 1, is characterized in that, the sieve number of being sieved by vibration of ultrasonic wave described in step (3) is 400-500 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839222.2A CN104475755A (en) | 2014-12-30 | 2014-12-30 | Preparation method of spheroidal ultrafine silver powder for front surface of solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839222.2A CN104475755A (en) | 2014-12-30 | 2014-12-30 | Preparation method of spheroidal ultrafine silver powder for front surface of solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104475755A true CN104475755A (en) | 2015-04-01 |
Family
ID=52750432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839222.2A Pending CN104475755A (en) | 2014-12-30 | 2014-12-30 | Preparation method of spheroidal ultrafine silver powder for front surface of solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104475755A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127445A (en) * | 2015-09-15 | 2015-12-09 | 无锡英特派金属制品有限公司 | Preparing method for superfine silver powder used for solar energy front face silver paste |
| CN105710387A (en) * | 2016-03-03 | 2016-06-29 | 中国振华集团云科电子有限公司 | Process for producing silver powder through liquid phase reduction method |
| TWI593634B (en) * | 2015-12-15 | 2017-08-01 | 國家中山科學研究院 | A process to synthesize silver nano particles |
| CN108941609A (en) * | 2018-09-10 | 2018-12-07 | 河南金渠银通金属材料有限公司 | Solar cell conductive silver paste high performance spherical super fine silver powder and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011071885A2 (en) * | 2009-12-07 | 2011-06-16 | Duke University | Compositions and methods for growing copper nanowires |
| CN102407342A (en) * | 2011-10-31 | 2012-04-11 | 山东大学 | Preparation method of nano silver powder with accurately controllable particle size |
| CN102554264A (en) * | 2012-02-28 | 2012-07-11 | 东北大学 | Preparation method of palladium-silver alloy powder for conductive paste |
| CN102699344A (en) * | 2012-05-18 | 2012-10-03 | 西北稀有金属材料研究院 | Method for preparing micron-scale high-crystallinity spherical silver powder |
| CN102756131A (en) * | 2012-07-31 | 2012-10-31 | 中南大学 | Preparation method for micro-order platy silver powder |
-
2014
- 2014-12-30 CN CN201410839222.2A patent/CN104475755A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011071885A2 (en) * | 2009-12-07 | 2011-06-16 | Duke University | Compositions and methods for growing copper nanowires |
| CN102407342A (en) * | 2011-10-31 | 2012-04-11 | 山东大学 | Preparation method of nano silver powder with accurately controllable particle size |
| CN102554264A (en) * | 2012-02-28 | 2012-07-11 | 东北大学 | Preparation method of palladium-silver alloy powder for conductive paste |
| CN102699344A (en) * | 2012-05-18 | 2012-10-03 | 西北稀有金属材料研究院 | Method for preparing micron-scale high-crystallinity spherical silver powder |
| CN102756131A (en) * | 2012-07-31 | 2012-10-31 | 中南大学 | Preparation method for micro-order platy silver powder |
Non-Patent Citations (2)
| Title |
|---|
| 赖耀斌等: "单分散微米球形银粉的制备工艺", 《材料科学与工程学报》 * |
| 郭桂全: "太阳能电池用高振实密度银粉的制备和表征", 《稀有金属》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127445A (en) * | 2015-09-15 | 2015-12-09 | 无锡英特派金属制品有限公司 | Preparing method for superfine silver powder used for solar energy front face silver paste |
| TWI593634B (en) * | 2015-12-15 | 2017-08-01 | 國家中山科學研究院 | A process to synthesize silver nano particles |
| CN105710387A (en) * | 2016-03-03 | 2016-06-29 | 中国振华集团云科电子有限公司 | Process for producing silver powder through liquid phase reduction method |
| CN108941609A (en) * | 2018-09-10 | 2018-12-07 | 河南金渠银通金属材料有限公司 | Solar cell conductive silver paste high performance spherical super fine silver powder and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104475755A (en) | Preparation method of spheroidal ultrafine silver powder for front surface of solar cell | |
| CN107146883B (en) | A kind of pyrophosphoric acid cobalt sodium/carbon anode composite material, preparation and its application of nucleocapsid structure | |
| CN103289653A (en) | High-thermal-conductivity heat-storing nanometer-particle-mixed molten salt and preparation method thereof | |
| CN103413977B (en) | A kind of production technology of accumulator | |
| CN102881871A (en) | Method for preparing graphite/silicone composite material for negative electrode of lithium ion battery | |
| CN105742505B (en) | A kind of high performance calcium titanium ore solar cell and preparation method thereof | |
| CN103199243A (en) | Positive lead paste of lead-acid storage battery | |
| CN103682331B (en) | Positive lead paste of storage battery and preparation method thereof | |
| CN103996829B (en) | A kind of nano and micron composite structure lithium iron phosphate positive material and co-precipitation preparation method thereof | |
| CN103441308A (en) | Electrolyte of lead-acid storage battery, method for preparing electrolyte, and lead-acid storage battery | |
| CN104577056A (en) | Positive plate of lead-acid storage battery and manufacturing method of positive plate | |
| CN103394701B (en) | The preparation method of the super fine silver powder that a kind of epigranular is concentrated | |
| CN104993110A (en) | Preparation method of composite negative electrode material for lithium ion battery | |
| CN113270577A (en) | Aqueous zinc ion battery and positive electrode material | |
| CN103482690A (en) | Method for synthesizing tetrabasic lead sulfate by utilizing positive electrode waste lead plaster and application thereof | |
| CN109850955B (en) | Negative electrode material ZnCo of lithium ion battery2O4Method for preparing nano-rod | |
| CN105529447A (en) | Preparation method and application of carbon nanotube-carbon-porous silicon composite material | |
| CN114573033A (en) | Cluster MnO 2 Preparation method of the positive electrode material, secondary zinc-manganese battery and secondary zinc-manganese battery | |
| CN108946825B (en) | Preparation method of small-particle-size cobaltosic oxide | |
| CN105428599B (en) | A kind of production method of the long-life lead carbon battery pole plate of modified activated carbon | |
| CN105428600B (en) | A kind of preparation method of lead carbon battery electrode | |
| CN105449176B (en) | A kind of long-life lead carbon battery pole plate of modified activated carbon | |
| CN1404173A (en) | Positive pole lead plaster formula of aluminic acid accumulator | |
| CN103633331A (en) | Positive active material for lead-acid power battery and preparation method of positive active material | |
| CN103151182A (en) | Nano nickel oxide electrode material and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |