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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
Electrochemical Behavior And Determination Of Paracetamol On Activated Glassy Carbon Electrode, Bao-Yu Tan, Fang Liao, Xiao-Ying He, Qing-Tao Zhu, Jun Hua, Xiao-Li Jiang
Electrochemical Behavior And Determination Of Paracetamol On Activated Glassy Carbon Electrode, Bao-Yu Tan, Fang Liao, Xiao-Ying He, Qing-Tao Zhu, Jun Hua, Xiao-Li Jiang
Journal of Electrochemistry
The electrochemical behavior of paracetamol(PCT) was studied at glassy carbon electrode activated by cyclic voltammetry.In HAc-NaAc buffer solution(pH=4.00),a couple of sensitive redox peaks were recorded about 0.54 V in the cyclic voltammograms.The result indicated that the process was controlled by adsorption and nearly reversible.The reaction electron and proton numbers were estimated,respectively,to be two.Excllent linearity was observed in the correlation between the oxidation peak current and the concentration of PCT in the range of 8.00×10-6～2.00×10-4 mol·L-1.The correlative coefficient was-0.999 18.The detection limit was 6.34×10-6 mol·L-1.This method can be used for the determination of PCT real samples.
Electrochemical Behavior Of Zinc Alloy Anode In Ca(Oh)_2 Solutions Of Different Ph, Peng-Ying Ren, Ji-Quan He
Electrochemical Behavior Of Zinc Alloy Anode In Ca(Oh)_2 Solutions Of Different Ph, Peng-Ying Ren, Ji-Quan He
Journal of Electrochemistry
The polarization curves of zinc alloy anodes in Ca(OH)2 solutions have been measured by potentiodynamic method,and the composition of corrosion products were examined by X-ray-diffraction(XRD).The experimental results indicated that not only the electrochemical behavior of zinc alloy anodes were absolutely different in every alkaline solutions,but also many electrochemical parameters were determined,such as zero current potential(E0),the density of corrosion current(icorr),passive current density(ip),breakdown potential(Eb),and so on.There were three zero current potential when zinc alloy anodes in some Ca(OH)2 solutions which made passive state unstable.The graphs of E-pH about zinc alloy anodes dipped in different Ca(OH)2 solutions were drawn,and compared with the potential-pH …
Selective Electroless Copper Plating Micro-Pattern On Ceramics Without Sensitisation And Activation, Zhen-Lin Xu
Selective Electroless Copper Plating Micro-Pattern On Ceramics Without Sensitisation And Activation, Zhen-Lin Xu
Journal of Electrochemistry
The purpose of this article is to provide a new technology of electroless copper plating without palladium activation steps. By combining the technology of laser micro-etching with the new copper-plating bath, copper plating on ceramics was obtained. The experimental results showed that the solution used for copper electroless plating was stable and the copper coating obtained was bright,dense with good electrical conductivity.The line definition was about 40 μm. The electroless Cu films deposited from this system were gentle and required simple operating conditions.
Studies Of The Electrode Preparation Of Electrode From Lead Carbonate For Lead Acid Battery Ⅰ The Activation Of The Pme, Zhongxu Dai, Dihua Wang, Junwei Jiang, Yunhong Zhou, Jinyun Zou
Studies Of The Electrode Preparation Of Electrode From Lead Carbonate For Lead Acid Battery Ⅰ The Activation Of The Pme, Zhongxu Dai, Dihua Wang, Junwei Jiang, Yunhong Zhou, Jinyun Zou
Journal of Electrochemistry
Lead carbonate which was an intermediate product in lead hydrometallurgy without pollution of lead vapor and sulfur dioxide was selected as electrode material of lead_acid batteries. In the present work,the performances of PbO 2/PbSO 4 or PbSO 4/Pb electrode transformed from PbCO 3 have been investigated by powder microelectrode technique combined with cyclic voltammetry.The results show that the CV characteristics of either negative or positive electrode prepared from PbCO 3 is as good as that of both electrodes made from lead oxide produced by mill machine,when a powder microelectrode with PbCO 3 transformed into PbSO 4 in 1.0 mol/L H …
Studies Of Surface Treatment Methods And Their Operating Mechanisms For Activation Of Hydrogen Storage Electrode, Ronghui Hu, Hanxi Yang, Shigang Lu, Shengxian Li, Jingcheng Liu, Chongzhi Yang
Studies Of Surface Treatment Methods And Their Operating Mechanisms For Activation Of Hydrogen Storage Electrode, Ronghui Hu, Hanxi Yang, Shigang Lu, Shengxian Li, Jingcheng Liu, Chongzhi Yang
Journal of Electrochemistry
Surface treatment methods by use of charge discharge cycling, KBH 4 reduction and KOH etching were parallely investigated for the rapid activation of Mn(NiCoMnAl) 5 electrode. It is found that the MH electrode treated with hot and concentrated KOH solution exhibits rapid and full activation, and also gives lower discharge overvoltage, higher stable capacity and improved cycleability. It is also revealed from SEM, EDAX and ICP analysis that the KOH activation of the electrode proceeds mainly through the enrichment of mischmetal and nickel in surface to form electrocatalytically active surface for hydrogen absorption reaction, but the surface modification with KBH …
Effect Of Symmetric Alternating Current On Cathode Surface Before Iron Deposition, Xintan Hu
Effect Of Symmetric Alternating Current On Cathode Surface Before Iron Deposition, Xintan Hu
Journal of Electrochemistry
The composition and thickness of active film formed on the surface of cathodemade of low carbon steel after treated by symmetric alternating current(SAC)in ferris chloride bathis studied,and the interfacial morphology of the iron deposit and the substrate is also examined.Theresults show that the active film,which a thickness of 20～25nm can be obtained under SAC densityof about 7A dm￣(-2) ,so that the adherent iron deposit can be achieved on the active film. The effect ofSAC on cathode surface is discussed in detail.