Potential-Dependent Adsorption/Desorption Behavior of Perfluorosulfonated Ionomer on a Gold Electrode Surface Studied by Cyclic Voltammetry, Electrochemical Quartz Microbalance, and Electrochemical Atomic Force Microscopy

Langmuir ◽  
2013 ◽  
Vol 29 (7) ◽  
pp. 2420-2426 ◽  
Author(s):  
Takuya Masuda ◽  
Kota Ikeda ◽  
Kohei Uosaki
Keyword(s):  
Atomic Force Microscopy ◽  
Cyclic Voltammetry ◽  
Electrode Surface ◽  
Gold Electrode ◽  
Force Microscopy ◽  
Quartz Microbalance ◽  
Atomic Force ◽  
Perfluorosulfonated Ionomer ◽  
Adsorption Desorption

In SituObservation of the Au-Hg Alloy Formation on a Gold Electrode Surface by Atomic Force Microscopy

1994 ◽  
Vol 23 (11) ◽  
pp. 2059-2062 ◽  
Author(s):  
Xiaomin Yang ◽  
Kousuke Tonami ◽  
Larry Akio Nagahara ◽  
Kazuhito Hashimoto ◽  
Yu Wei ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Electrode Surface ◽  
Gold Electrode ◽  
Alloy Formation ◽  
Force Microscopy ◽  
Atomic Force

In Operando Detection of the Physical Properties Change of the Interfacial Electrolyte during Li-Metal Electrode Reaction by Atomic Force Microscopy

2020 ◽  
Author(s):  
Mitsunori Kitta
Keyword(s):  
Atomic Force Microscopy ◽  
Energy Dissipation ◽  
Physical Properties ◽  
Electrode Surface ◽  
Electrode Reaction ◽  
Metal Electrode ◽  
Ion Concentration ◽  
Force Microscopy ◽  
Atomic Force ◽  
Discharge Reaction

This manuscript propose the operando detection technique of the physical properties change of electrolyte during Li-metal battery operation.The physical properties of electrolyte solution such as viscosity (η) and mass densities (ρ) highly affect the feature of electrochemical Li-metal deposition on the Li-metal electrode surface. Therefore, the operando technique for detection these properties change near the electrode surface is highly needed to investigate the true reaction of Li-metal electrode. Here, this study proved that one of the atomic force microscopy based analysis, energy dissipation analysis of cantilever during force curve motion, was really promising for the direct investigation of that. The solution drag of electrolyte, which is controlled by the physical properties, is directly concern the energy dissipation of cantilever motion. In the experiment, increasing the energy dissipation was really observed during the Li-metal dissolution (discharge) reaction, understanding as the increment of η and ρ of electrolyte via increasing of Li-ion concentration. Further, the dissipation energy change was well synchronized to the charge-discharge reaction of Li-metal electrode.This study is the first report for direct observation of the physical properties change of electrolyte on Li-metal electrode reaction, and proposed technique should be widely interesting to the basic interfacial electrochemistry, fundamental researches of solid-liquid interface, as well as the battery researches.

scholarly journals Surface of Alumina Films after Prolonged Breakdowns in Galvanostatic Anodization

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Christian Girginov ◽  
Stephan Kozhukharov
Keyword(s):  
Surface Roughness ◽  
Atomic Force Microscopy ◽  
Electrode Surface ◽  
Roughness Parameters ◽  
Anodic Films ◽  
Force Microscopy ◽  
Alumina Films ◽  
Anodization Time ◽  
Atomic Force ◽  
Current Densities

Breakdown phenomena are investigated at continuous isothermal (20∘C) and galvanostatic (0.2–5 mA cm−2) anodizing of aluminum in ammonium salicylate in dimethylformamide (1 M AS/DMF) electrolyte. From the kinetic -curves, the breakdown voltage () values are estimated, as well as the frequency and amplitude of oscillations of formation voltage () at different current densities. The surface of the aluminum specimens was studied using atomic force microscopy (AFM). Data on topography and surface roughness parameters of the electrode after electric breakdowns are obtained as a function of anodization time. The electrode surface of anodic films, formed with different current densities until the same charge density has passed (2.5 C cm−2), was assessed. Results are discussed on the basis of perceptions of avalanche mechanism of the breakdown phenomena, due to the injection of electrons and their multiplication in the volume of the film.

Preparation and Characterization of Electrodes Modified with Metalloporphyrins. Application to Reduction of Nitrite

2003 ◽  
Vol 68 (9) ◽  
pp. 1723-1735 ◽  
Author(s):  
Francisco Armijo ◽  
Ejnar Trollund ◽  
Matías Reina ◽  
M. Carmen Arévalo ◽  
M. Jesús Aguirre
Keyword(s):  
Atomic Force Microscopy ◽  
Cyclic Voltammetry ◽  
Modified Electrodes ◽  
Amino Groups ◽  
Catalytic Behavior ◽  
Force Microscopy ◽  
Atomic Force ◽  
Vis Spectroscopy ◽  
Hcl Solution

Six type-modified electrodes by electropolymerization of tetrakis(x-aminophenyl)porphyrins, where x = 2, 3 or 4, and their Cu(II) and Ni(II) complexes in HCl solution were prepared and characterized by cyclic voltammetry, atomic force microscopy and UV-VIS spectroscopy. The morphology of the polymers depends on the position of the amino groups. The modified electrodes show interesting electrocatalytic activity toward reduction of nitrites. The catalytic behavior strongly depends on the nature of the metal and the position of the amino groups.

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