| 泡沫铅对VRLA电池负极活性物质结构及性能影响 |
| Effects of Lead Foam on Structure and Characteristic of Negative Active Materials in VRLA Batteries |
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| 摘要: |
| 关键词: 铅酸电池 负极活性物质 板栅材料 泡沫铅 |
| 基金项目: |
| Abstract: The surface morphology and composition of negative active material (NAM) both on the cast grid and on lead foam grid at the state of charge and discharge, in valve-regulated lead acid (VRLA) battery, were characterized by SEM and XRD, respectively. Moreover, the specific surface area and electrochemical impedance of the negative active material for both negative electrode grids were studied by chronoamperometry and EIS. The result indicates that after lots of cycles, compared with the cast grid, the sponge lead of the lead foam negative plate is smaller; the specific surface area increases by about 16%; the residual PbSO4 on the surface of the electrode is less at the state of charge. At the state of discharge, PbSO4 crystals on the surface of the negative plate of lead foam are smaller, and the specific surface area increases to 209%. EIS analysis shows that compared with the negative plate of cast grid, no matter what state the negative plate of lead foam is at, the electrochemical impedance of the material is lower. |
| Keywords: lead acid battery negative active material grid material lead foam |
| 投稿时间：2005-04-25 修订日期：2005-07-07 |
| 摘要点击次数: 1729 |
| 全文下载次数: 1942 |
| 戴长松,王殿龙,伊廷锋,胡信国,姜兆华.泡沫铅对VRLA电池负极活性物质结构及性能影响[J].无机化学学报,2005,21(12):1875-1879. |
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