CN111091921A - Positive silver auxiliary grid slurry of PERC battery and preparation method thereof - Google Patents
Positive silver auxiliary grid slurry of PERC battery and preparation method thereof Download PDFInfo
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- CN111091921A CN111091921A CN201911376745.7A CN201911376745A CN111091921A CN 111091921 A CN111091921 A CN 111091921A CN 201911376745 A CN201911376745 A CN 201911376745A CN 111091921 A CN111091921 A CN 111091921A
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000002002 slurry Substances 0.000 title claims abstract description 37
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 title claims abstract description 30
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 title claims abstract description 30
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 title claims abstract description 30
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 30
- 239000004332 silver Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000002904 solvent Substances 0.000 claims abstract description 61
- 239000002270 dispersing agent Substances 0.000 claims abstract description 38
- 239000011230 binding agent Substances 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000011521 glass Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000000654 additive Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 12
- 229920001661 Chitosan Polymers 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- -1 polyoxyethylene Polymers 0.000 claims description 7
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 7
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 7
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 6
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 6
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 6
- 108010010803 Gelatin Proteins 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000159 gelatin Polymers 0.000 claims description 5
- 239000008273 gelatin Substances 0.000 claims description 5
- 235000019322 gelatine Nutrition 0.000 claims description 5
- 235000011852 gelatine desserts Nutrition 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 4
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 4
- 229910001935 vanadium oxide Inorganic materials 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 239000002280 amphoteric surfactant Substances 0.000 claims description 3
- 239000005385 borate glass Substances 0.000 claims description 3
- 150000007942 carboxylates Chemical class 0.000 claims description 3
- 229920003086 cellulose ether Polymers 0.000 claims description 3
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 3
- 229910001947 lithium oxide Inorganic materials 0.000 claims description 3
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 3
- 239000002736 nonionic surfactant Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000005365 phosphate glass Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009766 low-temperature sintering Methods 0.000 abstract description 3
- 239000003960 organic solvent Substances 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 239000008367 deionised water Substances 0.000 description 17
- 229910021641 deionized water Inorganic materials 0.000 description 17
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 4
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 2
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229960003237 betaine Drugs 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052810 boron oxide Inorganic materials 0.000 description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 229940117986 sulfobetaine Drugs 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/14—Conductive material dispersed in non-conductive inorganic material
- H01B1/16—Conductive material dispersed in non-conductive inorganic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a PERC battery positive silver auxiliary grid slurry which is prepared from the following raw materials in percentage by mass: 70-90% of metal silver powder, 1-10% of lead-free glass powder, 5-20% of water-based solvent and 0-1% of additive. The invention adopts the water-based solvent to replace the traditional organic solvent, has environment-friendly and safe water and low price, and can reduce the consumption of the slurry and the production cost. The water-based solvent disclosed by the invention comprises the following raw materials in percentage by mass: 70-95% of water, 1-30% of binder and 0-5% of dispersant. The metal silver powder is superfine silver powder with the particle size of less than 0.5um, and the purity of the silver powder is more than 99.9 percent. When the conductive paste is prepared from the superfine silver powder, the conductive paste has excellent performance of low-temperature sintering, can form good ohmic contact with the substrate silicon, and improves the height of the secondary grid line, thereby improving the photoelectric conversion efficiency.
Description
Technical Field
The invention relates to a PERC battery positive silver auxiliary grid slurry and a preparation method thereof.
Background
The secondary grid line of the solar cell is mainly used for collecting photoproduction current generated by the solar cell, ohmic contact is required to be formed between the secondary grid line and the solar cell, the higher the height of the secondary grid line is, the lower the transmission resistance is, the photoelectric conversion efficiency is improved, but the unit consumption of slurry is increased, and the production cost is improved; the wider the width of the secondary grid line, the larger the transmission resistance can be reduced, but the problem of large slurry consumption also exists, the effective light receiving area can be reduced, and the improvement of the photoelectric conversion efficiency is limited, so that the optimization of the aspect ratio of the secondary grid line is more and more paid attention by the industry.
Disclosure of Invention
The first purpose of the invention is to provide the PERC battery positive silver auxiliary grid paste with good photoelectric conversion rate and reduced production cost.
The first object of the invention is achieved by the following technical measures: the positive silver auxiliary grid slurry for the PERC battery is characterized by comprising the following raw materials in percentage by mass:
70-90% of metal silver powder, 1-10% of lead-free glass powder, 5-20% of water-based solvent and 0-1% of additive.
The invention adopts the water-based solvent to replace the traditional organic solvent, has environment-friendly and safe water and low price, and can reduce the consumption of the slurry and the production cost.
The water-based solvent disclosed by the invention comprises the following raw materials in percentage by mass: 70-95% of water, 1-30% of binder and 0-5% of dispersant.
The metal silver powder is superfine silver powder with the particle size of less than 0.5um, and the purity of the silver powder is more than 99.9 percent. When the conductive paste is prepared from the superfine silver powder, the conductive paste has excellent performance of low-temperature sintering, can form good ohmic contact with the substrate silicon, and improves the height of the secondary grid line, thereby improving the photoelectric conversion efficiency.
The lead-free glass powder is a phosphate glass system or a borate glass system containing any one or combination of any two or more of aluminum oxide, zinc oxide, lithium oxide, vanadium oxide, bismuth oxide, barium oxide, tungsten oxide, sodium oxide and silicon oxide.
The binder is any one or the combination of any two or more than two of epoxy resin, gelatin, cellulose ether, polyoxyethylene ether, chitosan and chitosan derivatives.
The dispersant is any one or the combination of any two or more than two of carboxylate type, sulfonate type, sulfate type and phosphate type amphoteric surfactants.
The dispersant of the invention is any one or the combination of any two or more of polyoxyethylene type, polyhydric alcohol type, alkanolamide type and polyether type nonionic surfactants.
The second purpose of the invention is to provide a preparation method of the positive silver auxiliary grid paste of the PERC battery.
The second object of the invention is achieved by the following technical measures: the preparation method of the positive silver auxiliary grid paste of the PERC battery is characterized by comprising the following steps of:
step 1, respectively weighing 70-95% of water, 1-30% of binder and 0-5% of dispersant by mass percent, and mixing to prepare a water-based solvent for later use;
step 2, weighing 70-90% of metal silver powder, 1-10% of lead-free glass powder, 5-20% of water-based solvent and 0-1% of additive according to mass percentage, wherein the water-based solvent is prepared in the step 1;
and 3, stirring and mixing the metal silver powder, the lead-free glass powder, the water-based solvent and the additive to prepare the positive silver main grid slurry of the PERC battery.
In the step 3, the water-based solvent is added step by step.
Compared with the prior art, the invention has the following remarkable effects:
⑴ the invention adopts water-based solvent to replace traditional organic solvent, has environment-friendly and safe water, low cost, and can reduce the consumption of slurry and production cost.
⑵ the metal silver powder of the invention is the superfine silver powder with the grain diameter less than 0.5um and the purity more than 99.9 percent, when the superfine silver powder is made into the conductive paste, the conductive paste has the excellent performance of low temperature sintering, can form good ohmic contact with the substrate silicon, and improves the height of the secondary grid line, thereby improving the photoelectric conversion efficiency.
⑶ the paste can solve the problems of large paste consumption and limitation on improvement of photoelectric conversion efficiency caused by optimizing the aspect ratio of the secondary grid line in the prior art, and is suitable for wide popularization and application.
Detailed Description
Example 1
The positive silver main grid slurry of the PERC battery is composed of the following raw materials in percentage by mass: 76% of metal silver powder, 8% of lead-free glass powder, 16% of water-based solvent and 0% of additive. Wherein the metal silver powder is superfine silver powder with the particle size less than 0.5um, and the purity of the silver powder is more than 99.9 percent.
The lead-free glass powder consists of 5.2 percent of bismuth oxide, 0.8 percent of boron oxide, 1.2 percent of aluminum oxide, 0.56 percent of zinc oxide and 0.24 percent of sodium oxide.
The water-based solvent consists of deionized water, a binder and a dispersant, and the water-based solvent accounts for 12.2% of the mass of the slurry, 3.42% of the mass of the binder and 0.38% of the mass of the dispersant. Namely, the deionized water accounts for 76.25 percent of the mass of the water-based solvent, the binder accounts for 21.38 percent of the mass of the water-based solvent, and the dispersant accounts for 2.38 percent of the mass of the water-based solvent. The binder consists of 2.56 percent of methyl allyl polyoxyethylene ether and 0.86 percent of hydroxyethyl cellulose which account for the mass percent of the slurry; the dispersant is composed of amido sulfobetaine 0.23% and sulfate betaine 0.15% in mass percentage of the slurry.
The preparation method of the positive silver main grid paste of the PERC battery in the embodiment comprises the following steps:
step 1, weighing 12.2% of deionized water, 3.42% of binder and 0.38% of dispersant according to mass percentage. Wherein, the binder consists of 2.56 percent of methyl allyl polyoxyethylene ether and 0.86 percent of hydroxyethyl cellulose; the dispersant consists of 0.23 percent of amido sulfobetaine and 0.15 percent of sulfate betaine; mixing and dissolving, so that the dispersing agent and the binder are completely dissolved in deionized water to prepare a water-based solvent for later use;
step 2, weighing 76% of metal silver powder (the metal silver powder is superfine silver powder with the particle size of less than 0.5um, the purity of the silver powder is more than 99.9%), 8% of lead-free glass powder and 16% of water-based solvent according to the mass percentage, wherein the water-based solvent is prepared in the step 1;
and 3, stirring and mixing the metal silver powder, the lead-free glass powder and the water-based solvent to prepare the positive silver main grid slurry of the PERC battery.
Example 2
The positive silver main grid slurry of the PERC battery in the embodiment is composed of the following raw materials in percentage by mass: 80% of metal silver powder, 6.3% of lead-free glass powder, 13.8% of water-based solvent and 0.2% of additive. Wherein the metal silver powder is superfine silver powder with the particle size less than 0.5um, and the purity of the silver powder is more than 99.9 percent.
The lead-free glass powder consists of 3.56 percent of bismuth oxide, 0.6 percent of phosphorus pentoxide and 2.14 percent of silicon oxide.
The water-based solvent consists of 11.07 percent of deionized water, 2.39 percent of binder and 0.34 percent of dispersant by mass percent. Namely, the deionized water accounts for 80.22 percent of the mass of the water-based solvent, the binder accounts for 17.32 percent of the mass of the water-based solvent, and the dispersant accounts for 2.46 percent of the mass of the water-based solvent. The adhesive is 2.39 percent of gelatin which accounts for the mass percent of the slurry; the dispersant is 0.34% glycerol by mass of the slurry.
The preparation method of the positive silver main grid paste of the PERC battery in the embodiment comprises the following steps:
step 1, weighing 11.07% of deionized water, 2.39% of binder and 0.34% of dispersant according to mass percentage. Wherein, the binder is 2.39% of gelatin; the dispersant is 0.34% glycerol; mixing and dissolving, so that the dispersing agent and the binder are completely dissolved in deionized water to prepare a water-based solvent for later use;
step 2, respectively weighing 80% of metal silver powder (the metal silver powder is superfine silver powder with the particle size of less than 0.5um, and the purity of the silver powder is more than 99.9%), 6.3% of lead-free glass powder, 13.8% of water-based solvent and 0.2% of additive according to the mass percentage; wherein the water-based solvent is prepared in the step 1;
and 3, stirring and mixing the metal silver powder, the lead-free glass powder, the two-thirds mass of water-based solvent and the additive, adding the rest water-based solvent, and stirring and mixing to obtain the positive silver main grid slurry of the PERC battery.
Example 3
The positive silver main grid slurry of the PERC battery in the embodiment is composed of the following raw materials in percentage by mass: 84% of metal silver powder, 4% of lead-free glass powder, 11.5% of water-based solvent and 0.5% of additive. Wherein the metal silver powder is superfine silver powder with the particle size less than 0.5um, and the purity of the silver powder is more than 99.9 percent.
The lead-free glass powder consists of 2.8 percent of bismuth oxide, 0.6 percent of phosphorus pentoxide and 0.6 percent of vanadium oxide.
The water-based solvent consists of deionized water, a binder and a dispersant, and the water-based solvent accounts for 10.11% of the mass of the slurry, 1.14% of the mass of the binder and 0.25% of the mass of the dispersant. Namely, the mass percent of the deionized water in the water-based solvent is 87.91%, the mass percent of the binder in the water-based solvent is 9.91%, and the mass percent of the dispersant in the water-based solvent is 2.17%. The adhesive consists of 0.76 percent of epoxy resin and 0.38 percent of chitosan which account for the mass percent of the slurry; the dispersant is 0.25% of alkanolamide phosphate ester in mass percentage of the slurry.
The preparation method of the positive silver main grid paste of the PERC battery in the embodiment comprises the following steps:
step 1, weighing 10.11% of deionized water, 1.14% of binder and 0.25% of dispersant according to mass percentage. Wherein the binder consists of 0.76 percent of epoxy resin and 0.38 percent of chitosan which account for the mass percent of the slurry; the dispersant is 0.25 percent of alkanolamide phosphate ester which accounts for the mass percent of the slurry; mixing and dissolving, so that the dispersing agent and the binder are completely dissolved in deionized water to prepare a water-based solvent for later use;
step 2, weighing 84% of metal silver powder (the metal silver powder is superfine silver powder with the particle size of less than 0.5um, the purity of the silver powder is more than 99.9%), 4% of lead-free glass powder, 11.5% of water-based solvent and 0.5% of additive according to mass percentage; wherein the water-based solvent is prepared in the step 1;
and 3, stirring and mixing the metal silver powder, the lead-free glass powder, half of the water-based solvent and the additive, adding the rest water-based solvent, and stirring and mixing to obtain the positive silver main grid slurry of the PERC battery.
Example 4
The positive silver main grid slurry of the PERC battery in the embodiment is composed of the following raw materials in percentage by mass: 90% of metal silver powder, 1.5% of lead-free glass powder, 9% of water-based solvent and 1% of additive. Wherein the metal silver powder is superfine silver powder with the particle size less than 0.5um, and the purity of the silver powder is more than 99.9 percent.
The lead-free glass powder consists of 1.25 percent of silicon oxide and 0.25 percent of boron oxide.
The water-based solvent consists of deionized water, a binder and a dispersant, and the mass percentages of the deionized water, the binder and the dispersant in the slurry are respectively 8.13%, 0.67% and 0.2%. Namely, the deionized water accounts for 90.33 percent of the mass of the water-based solvent, the binder accounts for 7.44 percent of the mass of the water-based solvent, and the dispersant accounts for 2.22 percent of the mass of the water-based solvent. The binder is 0.67 percent of methyl allyl polyoxyethylene ether which accounts for the mass percent of the slurry; the dispersant is 0.2% of sulfosuccinate in mass percent of the slurry.
The preparation method of the positive silver main grid paste of the PERC battery in the embodiment comprises the following steps:
step 1, weighing 8.13% of deionized water, 0.67% of binder and 0.2% of dispersant according to mass percentage. Wherein, the binder is 0.67 percent of methyl allyl polyoxyethylene ether in mass percentage of the slurry; the dispersant is 0.2 percent of sulfosuccinate accounting for the mass percent of the slurry; mixing and dissolving, so that the dispersing agent and the binder are completely dissolved in deionized water to prepare a water-based solvent for later use;
step 2, respectively weighing 90% of metal silver powder (the metal silver powder is superfine silver powder with the particle size of less than 0.5um, and the purity of the silver powder is more than 99.9%), 1.5% of lead-free glass powder, 9% of water-based solvent and 1% of additive according to the mass percentage; wherein the water-based solvent is prepared in the step 1;
and 3, stirring and mixing the metal silver powder, the lead-free glass powder, the water-based solvent and the additive to prepare the positive silver main grid slurry of the PERC battery.
In other embodiments, the slurry of the present invention comprises the following raw materials in percentage by mass: 70-90% of metal silver powder, 1-10% of lead-free glass powder, 5-20% of water-based solvent and 0-1% of additive. The water-based solvent comprises the following raw materials in percentage by mass: 70-95% of water, 1-30% of binder and 0-5% of dispersant. The metal silver powder is superfine silver powder with the particle size less than 0.5um, and the purity of the silver powder is more than 99.9 percent. The lead-free glass powder is a phosphate glass system or a borate glass system containing any one or a combination of any two or more of aluminum oxide, zinc oxide, lithium oxide, vanadium oxide, bismuth oxide, barium oxide, tungsten oxide, sodium oxide, and silicon oxide. The binder is any one or the combination of any two or more than two of epoxy resin, gelatin, cellulose ether, polyoxyethylene ether, chitosan and chitosan derivatives. The dispersant is any one or any combination of two or more of carboxylate type, sulfonate type, sulfate type and phosphate type amphoteric surfactants, or any one or any combination of two or more of polyoxyethylene type, polyhydric alcohol type, alkanolamide type and polyether type nonionic surfactants.
The present invention is not limited to the above embodiments, and various modifications, substitutions and alterations can be made without departing from the basic technical concept of the present invention as described above.
Claims (9)
1. The positive silver auxiliary grid slurry for the PERC battery is characterized by comprising the following raw materials in percentage by mass:
70-90% of metal silver powder, 1-10% of lead-free glass powder, 5-20% of water-based solvent and 0-1% of additive.
2. The PERC cell positive silver secondary grid paste of claim 1, wherein: the metal silver powder is superfine silver powder with the particle size less than 0.5um, and the purity of the silver powder is more than 99.9 percent.
3. The PERC cell positive silver secondary grid paste of claim 1 or 2, wherein: the water-based solvent comprises the following raw materials in percentage by mass: 70-95% of water, 1-30% of binder and 0-5% of dispersant.
4. The PERC battery positive silver secondary grid paste of claim 3, wherein: the lead-free glass powder is a phosphate glass system or a borate glass system containing any one or combination of any two or more of aluminum oxide, zinc oxide, lithium oxide, vanadium oxide, bismuth oxide, barium oxide, tungsten oxide, sodium oxide and silicon oxide.
5. The PERC battery positive silver secondary grid paste of claim 4, wherein: the binder is any one or the combination of any two or more than two of epoxy resin, gelatin, cellulose ether, polyoxyethylene ether, chitosan and chitosan derivatives.
6. The PERC battery positive silver secondary grid paste of claim 5, wherein: the dispersant is any one or the combination of any two or more than two of carboxylate type, sulfonate type, sulfate type and phosphate type amphoteric surfactants.
7. The PERC battery positive silver secondary grid paste of claim 5, wherein: the dispersing agent is any one or the combination of any two or more of polyoxyethylene type, polyhydric alcohol type, alkanolamide type and polyether type nonionic surfactants.
8. A method for preparing the silver-positive secondary grid paste of the PERC cell of claim 1, comprising the steps of:
step 1, respectively weighing 70-95% of water, 1-30% of binder and 0-5% of dispersant by mass percent, and mixing to prepare a water-based solvent for later use;
step 2, weighing 70-90% of metal silver powder, 1-10% of lead-free glass powder, 5-20% of water-based solvent and 0-1% of additive according to mass percentage, wherein the water-based solvent is prepared in the step 1;
and 3, stirring and mixing the metal silver powder, the lead-free glass powder, the water-based solvent and the additive to prepare the positive silver main grid slurry of the PERC battery.
9. The method of claim 8, wherein: in said step 3, the aqueous-based solvent is added stepwise.
Priority Applications (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112980351A (en) * | 2021-02-26 | 2021-06-18 | 上海日御新材料科技有限公司 | Binder for back electrode silver paste and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964219A (en) * | 2010-08-10 | 2011-02-02 | 上海九晶电子材料股份有限公司 | Silver paste for positive of crystalline silicon solar cell and preparation method thereof |
| CN102592705A (en) * | 2012-03-15 | 2012-07-18 | 上海交通大学 | Environment-friendly water-based positive silver paste for solar cell, and preparation method thereof |
| US20170117422A1 (en) * | 2015-10-26 | 2017-04-27 | Kang Zhun Electronical Technology (Kunshan) Co., Ltd. | Silver paste for solar cell and method for making same |
| CN107331438A (en) * | 2017-08-30 | 2017-11-07 | 合肥敏喆信息科技有限公司 | A kind of environment protection solar cell front electrode conductor paste and preparation method thereof |
| CN107658045A (en) * | 2017-08-30 | 2018-02-02 | 南通天盛新能源股份有限公司 | A kind of unleaded PERC batteries back electrode silver paste and preparation method |
-
2019
- 2019-12-27 CN CN201911376745.7A patent/CN111091921A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964219A (en) * | 2010-08-10 | 2011-02-02 | 上海九晶电子材料股份有限公司 | Silver paste for positive of crystalline silicon solar cell and preparation method thereof |
| CN102592705A (en) * | 2012-03-15 | 2012-07-18 | 上海交通大学 | Environment-friendly water-based positive silver paste for solar cell, and preparation method thereof |
| US20170117422A1 (en) * | 2015-10-26 | 2017-04-27 | Kang Zhun Electronical Technology (Kunshan) Co., Ltd. | Silver paste for solar cell and method for making same |
| CN107331438A (en) * | 2017-08-30 | 2017-11-07 | 合肥敏喆信息科技有限公司 | A kind of environment protection solar cell front electrode conductor paste and preparation method thereof |
| CN107658045A (en) * | 2017-08-30 | 2018-02-02 | 南通天盛新能源股份有限公司 | A kind of unleaded PERC batteries back electrode silver paste and preparation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980351A (en) * | 2021-02-26 | 2021-06-18 | 上海日御新材料科技有限公司 | Binder for back electrode silver paste and preparation method thereof |
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