CN103286320A - Method for preparing superfine silver powder used for solar cell - Google Patents
Method for preparing superfine silver powder used for solar cell Download PDFInfo
- Publication number
- CN103286320A CN103286320A CN2013102269380A CN201310226938A CN103286320A CN 103286320 A CN103286320 A CN 103286320A CN 2013102269380 A CN2013102269380 A CN 2013102269380A CN 201310226938 A CN201310226938 A CN 201310226938A CN 103286320 A CN103286320 A CN 103286320A
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- CN
- China
- Prior art keywords
- silver powder
- solar cell
- super fine
- fine silver
- reducing solution
- 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.)
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title abstract description 5
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 229960005070 ascorbic acid Drugs 0.000 claims abstract description 9
- 235000010323 ascorbic acid Nutrition 0.000 claims abstract description 9
- 239000011668 ascorbic acid Substances 0.000 claims abstract description 9
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 229910052709 silver Inorganic materials 0.000 claims abstract description 6
- 239000004332 silver Substances 0.000 claims abstract description 6
- 239000000376 reactant Substances 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000010946 fine silver Substances 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 3
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 abstract 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 3
- 229910001961 silver nitrate Inorganic materials 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 1
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention provides a method for preparing superfine silver powder used for a solar cell. The method comprises the following steps that 1, ascorbic acid solution is heated to 50-60DEG C, dispersing agents are added in the ascorbic acid solution and are stirred with the ascorbic acid solution for 3-3.5 hours to obtain reducing solution, and anhydrous alcohol and formaldehyde are added to the reducing solution, are stirred with the reducing solution for 30 minutes and are cooled to the room temperature; 2, the reducing solution and silver nitrate solution are respectively heated to the reaction temperature, and the silver nitrate solution is added to the reducing solution and is stirred with the reducing solution; 3, reactants after reactions are deposited, filtered, washed and then dried under a constant temperature; 4, dried solid is screened through a 20-micron screen to obtain the superfine silver powder; 5, the superfine silver powder is used for right side silver slurry of the solar cell. Compared with the prior art, the method is high in obtained superfine silver powder purity and can improve transfer efficiency of the solar cell.
Description
Technical field
The present invention relates to a kind of preparation method, relate in particular to a kind of preparation method of the super fine silver powder for solar cell.
Background technology
Battery has been widely used on numerous occasions and the product, and wherein the efficient of battery is that people want the target that improves always.People have carried out effort from every side, with the efficient of hope raising battery, for example from new material, new preparation process etc.The surface of solar cell can apply the silver slurry usually, and its energy conversion efficiency to solar cell has very big influence factor, therefore becomes the direction of a research from performance how to improve the silver slurry.
Summary of the invention
The technical problem that the present invention mainly solves is how to improve the purity of super fine silver powder, the corresponding conversion efficiency that improves solar cell.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses a kind of preparation method of the super fine silver powder for solar cell, may further comprise the steps:
(1), ascorbic acid solution is heated to 50-60 degree centigrade, stir when adding dispersant, add the back and continue to stir 3-3.5 hour, obtain reducing solution, in reducing solution, add absolute alcohol and formaldehyde, stirred 30 minutes, be cooled to room temperature;
(2), reducing solution and liquor argenti nitratis ophthalmicus are heated to reaction temperature respectively, liquor argenti nitratis ophthalmicus is joined in the reducing solution, stir;
(3), with reacted reactant precipitation, filtration, washing, freeze-day with constant temperature then;
(4), dried solid 20 tm screen excessively, obtain super fine silver powder;
(5), the front side silver paste that super fine silver powder is used for solar cell.
In a preferred embodiment of the present invention, the ascorbic acid solution heating-up temperature in the step (1) is 55 degrees centigrade, and continuing mixing time is 200 minutes.
In a preferred embodiment of the present invention, reaction temperature is 120 degrees centigrade in the step (2).
In a preferred embodiment of the present invention, wash with deionized water or absolute alcohol in the step (3).
In a preferred embodiment of the present invention, the constant temperature in the step (4) is 75 degrees centigrade, and be 3.2 hours drying time.
In a preferred embodiment of the present invention, dispersant is carboxymethyl cellulose in the step (1).
Compared to prior art, the purity of the super fine silver powder that preparation method of the present invention obtains is higher, can improve the conversion efficiency of solar cell.
The specific embodiment
To the technical scheme in the embodiment of the invention be clearly and completely described below, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtain under the creative work prerequisite.
The embodiment of the invention discloses a kind of preparation method of the super fine silver powder for solar cell, may further comprise the steps:
In order to solve the problems of the technologies described above, the embodiment of the invention discloses a kind of preparation method of the super fine silver powder for solar cell, may further comprise the steps:
(1), ascorbic acid solution is heated to 50-60 degree centigrade, stir when adding dispersant, add the back and continue to stir 3-3.5 hour, obtain reducing solution, in reducing solution, add absolute alcohol and formaldehyde, stirred 30 minutes, be cooled to room temperature;
(2), reducing solution and liquor argenti nitratis ophthalmicus are heated to reaction temperature respectively, liquor argenti nitratis ophthalmicus is joined in the reducing solution, stir;
(3), with reacted reactant precipitation, filtration, washing, freeze-day with constant temperature then;
(4), dried solid 20 tm screen excessively, obtain super fine silver powder;
(5), the front side silver paste that super fine silver powder is used for solar cell.
In a preferred embodiment of the present invention, the ascorbic acid solution heating-up temperature in the step (1) is 55 degrees centigrade, and continuing mixing time is 200 minutes.
In a preferred embodiment of the present invention, reaction temperature is 120 degrees centigrade in the step (2).
In a preferred embodiment of the present invention, wash with deionized water or absolute alcohol in the step (3).
In a preferred embodiment of the present invention, the constant temperature in the step (4) is 75 degrees centigrade, and be 3.2 hours drying time.
In a preferred embodiment of the present invention, dispersant is carboxymethyl cellulose in the step (1).
Compared to prior art, the purity of the super fine silver powder that preparation method of the present invention obtains is higher, can improve the conversion efficiency of solar cell.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (6)
1. a preparation method who is used for the super fine silver powder of solar cell is characterized in that, may further comprise the steps:
(1), ascorbic acid solution is heated to 50-60 degree centigrade, stir when adding dispersant, add the back and continue to stir 3-3.5 hour, obtain reducing solution, in reducing solution, add absolute alcohol and formaldehyde, stirred 30 minutes, be cooled to room temperature;
(2), reducing solution and liquor argenti nitratis ophthalmicus are heated to reaction temperature respectively, liquor argenti nitratis ophthalmicus is joined in the reducing solution, stir;
(3), with reacted reactant precipitation, filtration, washing, freeze-day with constant temperature then;
(4), dried solid 20 tm screen excessively, obtain super fine silver powder;
(5), the front side silver paste that super fine silver powder is used for solar cell.
2. the preparation method of the super fine silver powder for solar cell according to claim 1 is characterized in that the ascorbic acid solution heating-up temperature in the step (1) is 55 degrees centigrade, and continuing mixing time is 200 minutes.
3. the preparation method of the super fine silver powder for solar cell according to claim 1 is characterized in that, reaction temperature is 120 degrees centigrade in the step (2).
4. the preparation method of the super fine silver powder for solar cell according to claim 1 is characterized in that, washing is with deionized water or absolute alcohol in the step (3).
5. the preparation method of the super fine silver powder for solar cell according to claim 1 is characterized in that the constant temperature in the step (4) is 75 degrees centigrade, and be 3.2 hours drying time.
6. the preparation method of the super fine silver powder for solar cell according to claim 1 is characterized in that, dispersant is carboxymethyl cellulose in the step (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102269380A CN103286320A (en) | 2013-06-08 | 2013-06-08 | Method for preparing superfine silver powder used for solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102269380A CN103286320A (en) | 2013-06-08 | 2013-06-08 | Method for preparing superfine silver powder used for solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103286320A true CN103286320A (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102269380A Pending CN103286320A (en) | 2013-06-08 | 2013-06-08 | Method for preparing superfine silver powder used for solar cell |
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| Country | Link |
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| CN (1) | CN103286320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070180A (en) * | 2014-07-30 | 2014-10-01 | 天津市职业大学 | Production method for high-density silver powder for solar cell conductive silver paste |
| CN104282394A (en) * | 2014-09-28 | 2015-01-14 | 苏州长盛机电有限公司 | Method for preparing silver paste for front electrode of polycrystalline silicon solar cell |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345158A (en) * | 1964-08-10 | 1967-10-03 | Ibm | Electrical conductor material and method of making same |
| CN1387968A (en) * | 2001-05-26 | 2003-01-01 | 西北稀有金属材料研究院 | Prepn of superfine spherical silver powder |
| JP2005105376A (en) * | 2003-09-30 | 2005-04-21 | Sumitomo Osaka Cement Co Ltd | Silver fine particle and its production method |
| CN101554664A (en) * | 2009-05-20 | 2009-10-14 | 广东风华高新科技股份有限公司 | Method for preparing nano-scale silver powder |
| JP2010024533A (en) * | 2008-07-24 | 2010-02-04 | Sumitomo Metal Mining Co Ltd | Method for producing silver powder |
| CN102000835A (en) * | 2010-12-20 | 2011-04-06 | 昆明理工大学 | Method for preparing micron spherical silver powder |
| CN102528069A (en) * | 2010-12-10 | 2012-07-04 | 比亚迪股份有限公司 | Preparation method for silver powder |
-
2013
- 2013-06-08 CN CN2013102269380A patent/CN103286320A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3345158A (en) * | 1964-08-10 | 1967-10-03 | Ibm | Electrical conductor material and method of making same |
| CN1387968A (en) * | 2001-05-26 | 2003-01-01 | 西北稀有金属材料研究院 | Prepn of superfine spherical silver powder |
| JP2005105376A (en) * | 2003-09-30 | 2005-04-21 | Sumitomo Osaka Cement Co Ltd | Silver fine particle and its production method |
| JP2010024533A (en) * | 2008-07-24 | 2010-02-04 | Sumitomo Metal Mining Co Ltd | Method for producing silver powder |
| CN101554664A (en) * | 2009-05-20 | 2009-10-14 | 广东风华高新科技股份有限公司 | Method for preparing nano-scale silver powder |
| CN102528069A (en) * | 2010-12-10 | 2012-07-04 | 比亚迪股份有限公司 | Preparation method for silver powder |
| CN102000835A (en) * | 2010-12-20 | 2011-04-06 | 昆明理工大学 | Method for preparing micron spherical silver powder |
Non-Patent Citations (1)
| Title |
|---|
| 甘卫平等: "化学还原制备太阳能电池正极浆料用超细银粉", 《粉末冶金材料科学与工程》, vol. 14, no. 06, 31 December 2009 (2009-12-31), pages 412 - 416 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070180A (en) * | 2014-07-30 | 2014-10-01 | 天津市职业大学 | Production method for high-density silver powder for solar cell conductive silver paste |
| CN104282394A (en) * | 2014-09-28 | 2015-01-14 | 苏州长盛机电有限公司 | Method for preparing silver paste for front electrode of polycrystalline silicon solar cell |
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Owner name: ZHENG YULIN Free format text: FORMER OWNER: SUZHOU NUOXIN INNOVATION ENERGY CO., LTD. Effective date: 20140403 |
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Free format text: CORRECT: ADDRESS; FROM: 215121 SUZHOU, JIANGSU PROVINCE TO: 518052 SHENZHEN, GUANGDONG PROVINCE |
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Effective date of registration: 20140403 Address after: 518052 room 217, West Tower, Nanshan digital culture industry base, Shenzhen, Nanshan District, Guangdong Applicant after: Zheng Yulin Address before: 215121, No. 3, Jinling West Road, 288 Town, Suzhou Industrial Park, Jiangsu Province, 309 Applicant before: Suzhou Nuoxin Innovation Energy Co., Ltd. |
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Application publication date: 20130911 |