Electrochemical investigation of covalently post-synthetic modified SURGEL coatings

2014 ◽  
Vol 50 (76) ◽  
pp. 11129-11131 ◽  
Author(s):  
V. Mugnaini ◽  
M. Tsotsalas ◽  
F. Bebensee ◽  
S. Grosjean ◽  
A. Shahnas ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Click Chemistry ◽  
Polymer Coating ◽  
Porous Polymer ◽  
Electrochemical Investigation ◽  
High Permeability ◽  
Diffusion Limited ◽  
Post Synthesis ◽  
Limited Process

Thiol–yne click chemistry post synthesis modification (PSM) is used to further functionalize a fully organic porous polymer coating (SURGEL). By cyclic voltammetry the resulting electrochemical properties are addressed. The Nernstian diffusion limited process observed in the presence of ferrocene as electrolyte is explained in terms of a high permeability of the SURGELs for ferrocene after PSM.

Correlation of Electrochemical Properties and Pore Structure for Carbon Nanoarchitectures with Ultrathin, Conformal Poly(o-Methoxyaniline) Coatings

2006 ◽  
Vol 45 ◽  
pp. 1885-1889
Author(s):  
Jeffrey W. Long
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Impedance Spectroscopy ◽  
Pore Structure ◽  
Electrochemical Properties ◽  
Polymer Coating ◽  
Electrochemical Impedance ◽  
Electroactive Polymer ◽  
Carbon Aerogels ◽  
Electrode Structure ◽  
Before And After

We use carbon aerogels and nanofoams as conductive, ultraporous platforms onto which ultrathin (<5-nm thick) conformal poly(o-methoxyaniline) coatings are applied using self-limiting electrodeposition. The electroactive polymer coating is incorporated to increase the overall chargestorage capacity of the resulting hybrid electrode structure. Nitrogen-sorption techniques are used to characterize the carbon nanoarchitecture pore structure before and after application of the polymer coating. The subtle modifications of the carbon nanoarchitecture with the polymer coating are correlated with the resulting electrochemical properties, as determined by cyclic voltammetry and electrochemical impedance spectroscopy.

scholarly journals Effect of Deposition Parameters on Electrochemical Properties of Polypyrrole-Graphene Oxide Films

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 624 ◽  
Author(s):  
Alina Iuliana Pruna ◽  
Nelly Ma. Rosas-Laverde ◽  
David Busquets Mataix
Keyword(s):  
Cyclic Voltammetry ◽  
Graphene Oxide ◽  
Electrochemical Properties ◽  
Sodium Dodecyl ◽  
Hybrid Coatings ◽  
Deposition Parameters ◽  
Structure Morphology ◽  
Energy Storage Applications ◽  
Improved Performance ◽  
Sds Surfactant

Graphene oxide (GO)-modified polypyrrole (PPy) coatings were obtained by electrochemical methods in the presence of the anionic surfactant, sodium dodecyl sulfate (SDS). The structure, morphology, and electrochemical properties of the coatings were assessed by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM) and cyclic voltammetry at varying scan rates, respectively. The properties of the obtained coatings were analyzed with the GO and PPy loadings and electrodeposition mode. The hybrid coatings obtained galvanostatically showed a coarser appearance than those deposited by cyclic voltammetry CV mode and improved performance, respectively, which was further enhanced by GO and PPy loading. The capacitance enhancement can be attributed to the SDS surfactant that well dispersed the GO sheets, thus allowing the use of lower GO content for improved contribution, while the choice of suitable electrodeposition parameters is highly important for improving the applicability of GO-modified PPy coatings in energy storage applications.

Preparation and Electrochemical Properties of LaMnO3 Powder as a Supercapacitor Electrode Material

2017 ◽  
Vol 727 ◽  
pp. 698-704 ◽  
Author(s):  
Xian Wei Wang ◽  
Xiao Er Wang ◽  
Hui Chao Zhang ◽  
Qian Qian Zhu ◽  
Dong Li Zheng ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Electrode Material ◽  
Raw Materials ◽  
Sol Gel ◽  
Galvanostatic Charge ◽  
Supercapacitor Electrode ◽  
Lanthanum Manganate ◽  
Pure Phase ◽  
Charge Discharge

The structural and electrochemical properties of lanthanum manganate (LaMnO3) powder prepared by the sol-gel method are researched in this article. The powder calcined at 600 °C showed amorphous, and the powder calcined at 700-800 °C showed the pure phase of the LaMnO3. The grains with the size of about 80-120 nm were agglomerating together. Cyclic voltammetry and galvanostatic charge-discharge were used to characterize the electrochemical properties in alkaline environment. The electrochemical properties calcined at 700 °C showed a specific capacitance of 73 F/g at the current density of 0.5 A/g. The raw materials for preparing the LaMnO3 powder are cheap, and the operation method is simple.

Sulfur in Hyper-cross-linked Porous Polymer as Cathode in Lithium–Sulfur Batteries with Enhanced Electrochemical Properties

2017 ◽  
Vol 9 (40) ◽  
pp. 34783-34792 ◽  
Author(s):  
Jing Hui Zeng ◽  
Ye Feng Wang ◽  
Si Qiong Gou ◽  
Lu Ping Zhang ◽  
Yu Chen ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Porous Polymer ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

scholarly journals An Electrochemical Sensor Based On Graphite Electrode Modified With Silica Containing 1-N-Propyl-3-Methylimidazolium Species For Determination Of Ascorbic Acid

2019 ◽  
Vol Vol. 14, No.1 ◽  
pp. 5-14 ◽  
Author(s):  
Anastasiya Tkachenko ◽  
Mykyta Onizhuk ◽  
Oleg Tkachenko ◽  
Leliz T. Arenas ◽  
Edilson V. Benvenutt ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Cyclic Voltammetry ◽  
Electrochemical Sensor ◽  
Electrochemical Impedance ◽  
Limit Of Detection ◽  
Pharmaceutical Formulations ◽  
Differential Pulse ◽  
Long Term Stability ◽  
Diffusion Limited

In the present study, an electrochemical sensor based on the electrode (SiMImCl/C) consisting of graphite and silica, grafted with 1-n-propyl-3-methylimidazolium chloride was used for ascorbic acid (AA) quantification in pharmaceuticals and food formulations. Cyclic voltammetry and electrochemical impedance spectroscopy were applied for electrochemical characterization of the SiMImCl/C electrode. The cyclic voltammetry study revealed that the oxidation of AA on this electrode is an irreversible process, realized by adsorption and diffusion limited step. The differential pulse voltammetry was applied to develop a procedure for the AA determination. The linear range was found to be 0.3–170 μmol L-1 and the limit of detection – 0.1 μmol L-1. The proposed SiMImCl/C electrode has long term stability and does not show electrochemical activity towards the analytes, which commonly coexist with AA. The sensor was successfully used for quantification of AA in food and pharmaceutical formulations.

Coordination polymers of 5-substituted 1,2,3,4-tetracyanocyclopentadienides: structural and electrochemical properties of complex compounds of 5-amino- and 5-nitro-tetracyanocyclopentadienide

2021 ◽  
Author(s):  
Patrick Nimax ◽  
Nils Rotthowe ◽  
Florian Zoller ◽  
Tobias Blockhaus ◽  
Friedrich Ernst Wagner ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Mössbauer Spectroscopy ◽  
Electrochemical Properties ◽  
Coordination Polymers ◽  
Mossbauer Spectroscopy ◽  
Complex Compounds ◽  
Electrochemical Methods ◽  
Mößbauer Spectroscopy

Compounds of the 5-amino- (ATCC) and 5-nitro-1,2,3,4-tetracyanocyclopentadienide (NTCC) ligand with iron(II) and iron(III), silver(I) and potassium(I) were prepared and characterized by electrochemical methods using EPR, cyclic voltammetry and Mößbauer spectroscopy...

scholarly journals Electrochemical investigation of adsorption of graphene oxide at an interface between two immiscible electrolyte solutions

RSC Advances ◽  
2020 ◽  
Vol 10 (43) ◽  
pp. 25817-25827
Author(s):  
Haiyan Qiu ◽  
Tao Jiang ◽  
Xiaoyuan Wang ◽  
Lin Zhu ◽  
Qingwei Wang ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Graphene Oxide ◽  
Electrolyte Solutions ◽  
Alternating Current ◽  
Adsorption Behavior ◽  
Electrochemical Investigation ◽  
Alternating Current Voltammetry

The adsorption behavior of graphene oxide (GO) nanosheets at an interface between two immiscible electrolyte solutions (ITIES) was electrochemically investigated firstly by using cyclic voltammetry (CV) and alternating current voltammetry (ACV).

scholarly journals Systematic ligand variation to modulate the electrochemical properties of iron and manganese complexes

2019 ◽  
Vol 48 (35) ◽  
pp. 13205-13211 ◽  
Author(s):  
Stefan S. Rohner ◽  
Niklas W. Kinzel ◽  
Christophe Werlé ◽  
Walter Leitner
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Electronic Properties ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Manganese Complexes ◽  
Catalytic Current ◽  
Water Oxidation Catalysis ◽  
Iron And Manganese

Systematic series of iron(+iii) and manganese(+ii) complexes are investigated by cyclic voltammetry to elucidate how the electronic properties of the ligands influence overpotential and catalytic current in the context of water oxidation catalysis.

Porous Polymer Coatings Based on Nitrocellulose

2019 ◽  
Vol 968 ◽  
pp. 68-75
Author(s):  
Valeriy Vyrovoy ◽  
Viacheslav Bachynckyi ◽  
Nadia Antoniuk
Keyword(s):  
Porous Structure ◽  
Cellular Structure ◽  
Polymer Coating ◽  
Experimental Studies ◽  
Polymer Coatings ◽  
Porous Polymer ◽  
Polymeric Coatings ◽  
New Approach ◽  
Porous Coatings

The paper presents the development of optimum structures and the production of polymeric coatings technology which can absorb aggressive substances. The studies of coatings penetrating into the film are presented due to the organization of their capillary-cellular structure by introducing special fillers. A new approach to solve the problem of protecting the environment, people, buildings and structures from the effects of aggressive substances has been proposed. The essence of the method consists in the preventive deposition on the surfaces of construction objects of porous coatings that can irreversibly absorb aggressive substances. Based on theoretical and experimental studies, porous coatings have been developed that are capable of accumulating in their volume aggressive substances, as well as certain principles of providing the coating with the necessary capillary-porous structure. The mechanism of creating a capillary-cellular structure of a polymer coating based on nitrocellulose are substantiated.

A further electrochemical investigation on solutions to high energetical power sources: isomerous compound 0.75Li1.2Ni0.2Mn0.6O2·0.25LiNi0.5Mn1.5O4

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37330-37339 ◽  
Author(s):  
Zhuo Zheng ◽  
Zhen-Guo Wu ◽  
Yan-Jun Zhong ◽  
Chong-Heng Shen ◽  
Wei-Bo Hua ◽  
...  
Keyword(s):  
Cathode Material ◽  
Electrochemical Properties ◽  
Molar Ratio ◽  
Electrochemical Investigation ◽  
Power Sources

A 0.75Li1.2Ni0.2Mn0.6O2·0.25LiNi0.5Mn1.5O4 cathode material with outstanding electrochemical properties has been synthesized by introducing spinel LiNi0.5Mn1.5O4 material to fill the surface gaps in pristine lithium-rich layered Li1.2Ni0.2Mn0.6O2 in a molar ratio of 25 : 75.

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