Cathodic polarization curves for iron in hydrochloric acid solution of different concentrations (0.05,0.2,1 mol/L) at differeat temperstures (25,40,60℃) were measured in the presence of magnetic field of 0.4T (tesla).
In this paper, electroplating, electrolessplating and composite electroplating methods have been used to prepare the Ni-based binary alloy deposits such as Ni-S, Ni-P, Ni-Mo, Ni-W, Ni-Co, Ni-WC and Ni-ZrO2. The cathodic polarization curves of these deposits are compared with that of Watt-Ni to screen out the preliminary electrode with outstanding properties.
Ni-based binary alloy coatings and composite coatings, such as Ni-S, Ni-P, Ni-Mo, Ni-W, Ni-Co, Ni-WC and Ni-ZrO_2 were prepared by electroplating, electroless plating and composite electroplating methods. Hydrogen evolution property of these coatings were compared through cathodic polarization curves test.
Then, study the functions of compositions and the effect of the compositions on coating during charging reaction by i~t curve meanwhile during reduction by Taffel curve and Cathodic Polarization curve.
The properties of hydrogen evolution reaction were studied by measuring cathodic polarization curve in the chlor-alkali industry electrolyte. Results show that at a current density of (0.10) A/cm~2,the overpotential of hydrogen evolution is(350 mV) lower than that on Ni-plated electrode.
Nickel-cobalt-tungsten-phosphorus alloy was prepared by electroless plating on ferrous electrode,and its electrocatalytic behavior of hydrogen evolution was studied by cathodic polarization curve in 1 mol/L NaOH solution.
用化学镀方法制备出Ni Co W P合金电极 ,测量了其在 1mol/LNaOH溶液中的阴极极化曲线并研究了其析氢电催化活性。
The Co(Ⅱ) Schiff base complex as oxygen-enriched material was added into the air electrode through immerging and directly blending methods. The effect of different adding ways on air electrode properties was investigated by measuring the cathode polarization curves.
The cathode polarization curves show that the deposits of CoMo alloys on titaium and steel substrate under electrolysis of 300 g/L NaCl at J K=30 mA/cm2 and at 60 can reduce H2 overpotential 520 mV and 180 mV respectively.
The effect of rare metal lanthanum on cathode polarization curves,depositing speed,chemical composition and crystal structure of the electroless Co-Fe-B alloy plating was studied using potentiostat, plasma transmitting spectrograph, electron energy spectrometer, X-ray diffractometer and transmission electron microscopy.
利用恒电位仪、等离子发射光谱仪、电子能谱仪、X射线衍射仪、透射电子显微镜等考察和分析了引入稀土金属La时化学镀Co Fe B合金的阴极极化曲线、沉积速度、化学成分和晶体结构。
The current efficiency of this system is a little higher than that of overseas kindred product as current density is 7 A/dm~2.The cathode polarization curves reveal that the polarization of the system is stronger than that of the overseas kindred product.
In order to gain better catalyze performance of air electrode on low polarization range,air electrode with catalyze of carbon based manganese dioxide was prepared,the effect of catalyze and preparation process on air electrode was investigated by measuring cathode polarization curve.
Cathodic polarization curves exhibited one current peak corresponding to the electrostripping of a compound formed by arsenate ions with silver.
The inflection points in the cathodic polarization curves originate seemingly from the change in the surface charge of the electrode on passing the zero potential.
The effect of the dilution factor of the supporting electrolyte on the run of cathodic polarization curves, pH value, and solution resistivity was analyzed.
Experimental cathodic polarization curves, obtained on a mercury electrode in 0.33 mM K3[Fe(CN)6] + 0-1.5 mM KCl solutions, are analyzed quantitatively.
Symmetrical anodic and cathodic polarization curves for a lithium electrode in the temperature range -35 to 80°C include a portion of ohmic current johm caused by intrinsic ionic conductivity of the passive layer.