高分散性纳米炭材料乳浊液对AGM阀控式铅酸蓄电池负极性能的影响研究

Study on the infl uences of highly dispersed nano-carbon emulsion on the performances of negative electrodes of AGM VRLA batteries

负极活性物质利用率和充电接受能力是AGM阀控式铅酸蓄电池最重要的性能参数之一。本文采用一种高分散性的纳米炭材料乳浊液加入到负极活性物质中,能显著性提高负极20小时率活性物质的利用率、充电接受能力,其提高幅度分别达到15%、78%。通过X射线衍射(XRD)技术、循环伏安扫描测试和阴极极化曲线测试对添加纳米炭材料乳浊液后负极活性物质进行了研究。最后运用双样本T检验对添加高分散性纳米炭材料乳浊液前后负极活性物质的性能的显著性影响进行了统计学评价。

The negative active material utilization and charge acceptance are the most important performance parameters of valve regulated lead-acid battery. In this paper, a highly dispersed nanocarbon emulsion added to negative active material can significantly improve the utilization of negative active material, charge acceptance by 15 % and 78 % respectively. Crystalline morphology and structure of negative active material with highly dispersed nano-carbon emulsion were studied by using X-ray diffraction （XRD）. In addition, the electrochemical properties were studied by using cyclic voltammetry and cathodic polarization after highly dispersed nano-carbon emulsion was added into negative electrode active material. Finally, an effective evaluation for the obvious influences on the performances of negative active material with highly dispersed nano-carbon emulsion was studied by using two sample T-test statistical methods.