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Volume 38 Issue 4
Aug.  2020
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LI Ying-fen, TONG Zi-wen, CHEN Lei, ZHU Yi-xiang. Preparation and performance of silver micro-nanoparticles for electrode silver paste[J]. Powder Metallurgy Technology, 2020, 38(4): 275-282. DOI: 10.19591/j.cnki.cn11-1974/tf.2019030009
Citation: LI Ying-fen, TONG Zi-wen, CHEN Lei, ZHU Yi-xiang. Preparation and performance of silver micro-nanoparticles for electrode silver paste[J]. Powder Metallurgy Technology, 2020, 38(4): 275-282. DOI: 10.19591/j.cnki.cn11-1974/tf.2019030009
shu

Preparation and performance of silver micro-nanoparticles for electrode silver paste

  • School of Materials and Energy Engineering, Guizhou Institute of Technology, Guiyang 550003, China

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    • Abstract
  • The silver particles in micro-nanometer size were prepared by solution chemical reduction method using AgNO3 as the precursor, C6H8O6 as the reducing agent, and tannin as the dispersant. The effects of reactant concentration, dispersant dosage, and pH value on the morphology, average particle size, and tap density of the silver powders were studied by X-ray diffractometer, scanning electron microscope, laser particle size analyzer, tapping apparatus, and solar energy performance tester. The results show that, the well-dispersed silver powders with spherical shape are synthesized under the optimal conditions as the pH value of 1, the AgNO3 concentration of 0.1 mol·L-1, the C6H8O6 concentration of 0.1 mol·L-1, the tannin concentration of 0.01 mol·L-1, and the reaction temperature of 25℃. The silver powders with the maximum tap density of 6.1 g·mL-1 can be obtained by mixing the silver powders in an average particle size of 1.16 μm and 0.66 μm. According to the surface morphology and battery performance of silver electrode, the silver electrode based on the mixed silver powders in the tap density of 6.1 g·mL-1 shows the best relative density, and the photoelectric conversion efficiency of the solar cell is the highest, reaching 17.16%.
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