In the as-cast Ti-55 alloy, the intragranular rare earth-rich phase particles are about 1. 0～14 μm in diameter, elliptical, and rich in Nd, Sn, and O. The contents of Nd and Sn on the grain boundaries are higher th...In the as-cast Ti-55 alloy, the intragranular rare earth-rich phase particles are about 1. 0～14 μm in diameter, elliptical, and rich in Nd, Sn, and O. The contents of Nd and Sn on the grain boundaries are higher than those at other sites. The intragranular phases grow preferably at the region on the grain boundaries, which causes the formation of the elliptical morphology of the intragranular phases.展开更多
采用恒电压电沉积法制备铜钴钼氧化物。利用场发射电子显微镜、X射线衍射、X射线光电子能谱对催化剂形貌和组成进行了表征,并通过线性扫描伏安曲线、计时电压分析对其电催化析氢/析氧性能进行了研究。结果表明,在1 mol/LKOH电解液中,该...采用恒电压电沉积法制备铜钴钼氧化物。利用场发射电子显微镜、X射线衍射、X射线光电子能谱对催化剂形貌和组成进行了表征,并通过线性扫描伏安曲线、计时电压分析对其电催化析氢/析氧性能进行了研究。结果表明,在1 mol/LKOH电解液中,该电极表现出优异HER和OER催化性能,HER与OER在电流密度10 m A/cm2过电位分别为46 m V与236 m V,塔菲尔斜率分别为132 m V/dec和115 m V/dec。检测Cu-Co-Mo-O复合物电极作为全电解水双功能催化剂的实用性,在两电极体系中,同时以该电极作为正负极,以1mol/LKOH溶液为电解液进行测试,得到Cu-Co-Mo-O复合物电极对在达到体系10 m A/cm2时所需过电位仅为1.57 m V,在电流密度10下极化24h后,电流密度10 m A/cm2下全水解电压增加到1.58 V。展开更多
文摘In the as-cast Ti-55 alloy, the intragranular rare earth-rich phase particles are about 1. 0～14 μm in diameter, elliptical, and rich in Nd, Sn, and O. The contents of Nd and Sn on the grain boundaries are higher than those at other sites. The intragranular phases grow preferably at the region on the grain boundaries, which causes the formation of the elliptical morphology of the intragranular phases.
文摘采用恒电压电沉积法制备铜钴钼氧化物。利用场发射电子显微镜、X射线衍射、X射线光电子能谱对催化剂形貌和组成进行了表征,并通过线性扫描伏安曲线、计时电压分析对其电催化析氢/析氧性能进行了研究。结果表明,在1 mol/LKOH电解液中,该电极表现出优异HER和OER催化性能,HER与OER在电流密度10 m A/cm2过电位分别为46 m V与236 m V,塔菲尔斜率分别为132 m V/dec和115 m V/dec。检测Cu-Co-Mo-O复合物电极作为全电解水双功能催化剂的实用性,在两电极体系中,同时以该电极作为正负极,以1mol/LKOH溶液为电解液进行测试,得到Cu-Co-Mo-O复合物电极对在达到体系10 m A/cm2时所需过电位仅为1.57 m V,在电流密度10下极化24h后,电流密度10 m A/cm2下全水解电压增加到1.58 V。
