文献类型：期刊文献

中文题名：电极银浆用微纳米银粉的制备与性能研究

英文题名：Preparation and performance of silver micro-nanoparticles for electrode silver paste

作者：黎应芬 童子文 陈雷 朱义祥

机构：[1]贵州理工学院材料与能源工程学院,贵阳550003

第一机构：贵州理工学院材料与能源工程学院

年份：2020

卷号：38

期号：4

起止页码：275-282

中文期刊名：粉末冶金技术

外文期刊名：Powder Metallurgy Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

基金：国家自然科学基金资助项目(51802050);贵州省教育厅青年科技人才成长项目(黔教合KY字[2017]223);贵州省科技计划资助项目(黔科合平台人才[2017]5789–04);贵州理工学院大学生创新创业训练计划资助项目(0417181,201814440085)。

语种：中文

中文关键词：银颗粒;微纳米尺寸;振实密度;电极;化学还原法

外文关键词：silver particles;micro-nanometer size;tap density;electrode;chemical reduction method

摘要：以硝酸银为前驱体,抗坏血酸为还原剂,单宁为分散剂,采用液相化学还原法制备了微纳米超细银颗粒。通过X射线衍射仪、扫描电子显微镜、激光粒度分析仪、振实密度仪及太阳能性能测试仪等设备研究了反应物浓度、分散剂剂量、pH值等工艺参数对银颗粒形貌、平均粒径及振实密度的影响。结果表明,当硝酸银浓度为0.1 mol·L^-1,抗坏血酸浓度为0.1 mol·L^-1,单宁浓度为0.01 mol·L^-1,pH值为1,反应温度为25℃时,能够获得分散性良好的球状银颗粒;将平均粒径为1.16μm和0.66μm的两种银粉按照一定质量比进行混合,制备得到的混合银粉最高振实密度可达到6.1 g·mL^-1;通过研究基于不同振实密度银粉的银电极表面形貌和电池性能,可以得出基于振实密度6.1 g·mL^-1混合银粉所制的银电极相对密度最好,太阳能电池的光电转换效率最高,达到17.16%。
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 1.16μm and 0.66μm.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%.