轧制温度对Pb/Al复合电极材料电化学性能的影响

Effect of rolling temperature on electrochemical properties of Pb-Al composite electrode material

采用浇铸法制备出Pb/Al复合电极材料,分别在室温和250℃下进行轧制。利用扫描电子显微镜、电化学工作站、四电子探针等,对Pb/Al复合电极材料的界面、电化学性能及导电性能进行分析。结果表明,浇铸轧制Pb/Al复合电极材料得到了界面冶金式结合,与浇铸Pb/Al复合电极材料相比,界面结合明显改善;浇铸常温轧制Pb/Al复合电极材料有着较优的电化学性能和导电性能,与浇铸250℃轧制Pb/Al复合电极材料、浇铸Pb/Al复合电极材料、传统Pb-Ag合金电极相比,极化电位分别降低2.4%、4.7%、9.8%,导电性能分别提高2.7%、6.8%、13.9%。

Pb / Al composite electrode materials were prepared by casting method,then rolled at room temperature and 250 ℃. The interface,electrochemical performance and conductivity of Pb / Al composite electrode materials were studied by SEM,electrochemical workstation and four electron probe method. The results show that casting rolling Pb / Al composite electrode materials for metallurgical interface type,interface binding improves significantly compared with casting Pb / Al composite electrode materials; polarization potential reduce by 2. 4%,4. 7% and 9. 8%,conductive performance increase by 2. 7%,6. 8% and 13. 9% respectively compared with casting250 ℃ rolling Pb / Al composite electrode materials,casting Pb / Al composite electrode materials and traditional Pb-Ag alloy electrode.