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characteristics of a single bubble on horizontal microelectrode surface, a constant-current chronopotentiometry water electrolysis experiment system was built. The bubble growth process was captured......
普通低碳钢与细晶粒钢钝化膜在碱性介质中的耐蚀性施锦杰1,孙伟1,耿国庆1(1.江苏省南京市东南大学材料科学与工程学院江苏省土木工程材料重点实验室)摘 要:应用循环伏安与动电位极化曲线确定普通低碳钢与细晶粒钢在碱性介质(模拟混凝上孔隙液)中的钝化区域.利用计时电流法在选取的阳极极化电位下使钢筋生成稳定的钝化膜,并通过电化学阻抗谱,Mott-Schottky曲线比较了钢筋在不同阳极电位下形成的钝化膜的优劣性;其次,循环极化曲线对比分析了在有无Cl~-存在时普通低碳钢与细晶粒钢钝化膜的耐蚀性.结果表明,2种钢筋的公共......
. Anhydrous PbCl2 (analytical grade) was directly introduced into the melts as the resource of Pb(II). Cyclic voltammetry, square wave voltammetry, linear sweep voltammogram, chronopotentiometry... voltammograms of Pb(II) on tungsten electrode in eutectic NaCl-KCl melts with different contents of PbCl2 at 700 °C and scan rate of 0.10 V/s Chronopotentiometry was also executed to further verify......
Chronopotentiometry experiment Potential-time curve of chronopotentiometry at I=80 μA is shown in Fig.3. It is evident that two parallel charge transfer processes corresponding to two transition times take place before hydrogen evolution largely, the transition times are τ1=24 s and τ2=12 s, which indicate that zinc ions discharge by two steps[14]. Fig.3 V-t curve of chronopotentiometry 4.3.2......
by chronopotentiometry, and the thickness of Zn-Fe alloy coating was controlled to be larger than 5 μm to assure the veracity of measurement. The content of Fe in Zn-Fe alloy coating was measured... capacitance of electrode/electrolyte interface double layer, such as chronopotentiometry, and chrono- amperometry. In this study, chronoamperometry was adopted. The condition should be controlled under......
not give a satisfactory explication. Fig.1 Polarization curves for OR on carbon electrode with Mn2O3 as catalyst (DE-CM) 3.2 Chronopotentiometry (CP) The chronopotentiometric technique......
also investigated by cyclic voltammetry and chronopotentiometry. 2 Experimental 2.1 Preparation of electrode materials The electrode materials were synthesized by reduction of KMnO4 with manganese......
有较好的电池性能,最大功率密度及相应的电流密度分别为56.8 mW/cm2和70 mA/cm2. 图5 Au/C,Au2Pd1/C,Au1Pd1/C,Au1Pd2/C及Pd/C的计时电位曲线 Fig.5 Chronopotentiometry curves of Au/C, Au2Pd1/C, Au1Pd1/C, Au1Pd2/C and Pd/C 图6......
on the Tafel slop b. In equation (4), the apparent transfer coefficient α is 0.62 that is obtained from chronopotentiometry. Moreover, the exchange current density JΘ is 0.082 A/cm2 using extrapolation......
) 3. 2 Chronopotentiometry A chronopotentiometric experiment was carried out to further study the formation of Mg-Zn-Li-Ca alloys. Figure 2 presents chronopotentiograms measured on a molybdenum......