新型铝电解电容器阳极箔耐水合试剂研究  

Research on new hydration-resistant reagent for anodic foil of aluminum electrolytic capacitor

作　　者：夏英杰[1] 丁甲[1] 冯哲圣[1] 

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《电子元件与材料》2009年第7期46-49,共4页Electronic Components And Materials

基　　金：国家自然科学基金资助项目(No.60601006);四川省应用基础研究计划资助项目(No.2008JY0054)

摘　　要：基于密度泛函的第一性原理计算,采用新型膦酸盐乙二胺四甲叉膦酸钠作为耐水合试剂对化成后的铝电极箔进行耐水合处理。研究了γ-Al2O3(110)面上水分子的吸附机理以及铝电极箔的耐水合性能。计算结果显示水分子在γ-Al2O3(110)面上的Al原子上方可发生吸附,且四面体位置上的Al原子吸附活性优于八面体位置上的Al原子。红外光谱及原子力显微镜检测表明铝电极箔耐水合性能优良。新方法处理后,升压时间从15.1s缩短到7.8s。Based on the first-principles density-functional calculation, hydration-resistant treatment with EDTMPS as the hydration-resistant reagent was performed for the aluminum foil. The water adsorption mechanism of γ-Al2O3 （110） surface and the hydration resistance of treated aluminum foil were investigated. The calculation results reveal that water molecules can adsorb on the AI atoms iocating on the γ-Al2O3 （110） surface, and the AI atoms locating at the top of tetrahedral are more active than those locating at the top of octahedral. FTIR analysis shows that less amount of AIO-H bond which characterizes the water adsorption on aluminum foil surface are found on the surface of treated aluminum foil. AFM analysis shows that the surface microstructure of treated aluminum foil is still clear after high temperature hydration, indicating that the hydration resistance of treated aluminum foil is high. After treating the aluminum foil with new method, the time for voltage rise of oxide film formed on the aluminum foil surface decreases from 15.1 s to 7.8 s.

关 键 词：第一性原理 铝电极箔 耐水合 膦酸盐 

分 类 号：TM535[电气工程—电器]