Electrochemical Properties of High Surface Area Vanadium Oxide Aerogels

2001 ◽  
Author(s):  
Winny Dong ◽  
Debra R. Rolison ◽  
Bruce Dunn
Keyword(s):  
Vanadium Oxide ◽  
Electrochemical Properties ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area

scholarly journals Electrochemical Sensor Based on Prussian Blue Electrochemically Deposited at ZrO2 Doped Carbon Nanotubes Glassy Carbon Modified Electrode

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1328 ◽  
Author(s):  
Marlon Danny Jerez-Masaquiza ◽  
Lenys Fernández ◽  
Gema González ◽  
Marjorie Montero-Jiménez ◽  
Patricio J. Espinoza-Montero
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Properties ◽  
Electrochemical Sensor ◽  
Prussian Blue ◽  
Surface Area ◽  
Glassy Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Electrochemically Deposited ◽  
Area X

In this work, a new hydrogen peroxide (H2O2) electrochemical sensor was fabricated. Prussian blue (PB) was electrodeposited on a glassy carbon (GC) electrode modified with zirconia doped functionalized carbon nanotubes (ZrO2-fCNTs), (PB/ZrO2-fCNTs/GC). The morphology and structure of the nanostructured system were characterized by scanning and transmission electron microscopy (TEM), atomic force microscopy (AFM), specific surface area, X-ray diffraction (XRD), thermogravimetric analysis (TGA), Raman and Fourier transform infrared (FTIR) spectroscopy. The electrochemical properties were studied by cyclic voltammetry (CV) and chronoamperometry (CA). Zirconia nanocrystallites (6.6 ± 1.8 nm) with cubic crystal structure were directly synthesized on the fCNTs walls, obtaining a well dispersed distribution with a high surface area. The experimental results indicate that the ZrO2-fCNTs nanostructured system exhibits good electrochemical properties and could be tunable by enhancing the modification conditions and method of synthesis. The fabricated sensor could be used to efficiently detect H2O2, presenting a good linear relationship between the H2O2 concentration and the peak current, with quantification limit (LQ) of the 10.91 μmol·L−1 and detection limit (LD) of 3.5913 μmol·L−1.

Effect of Synthesis Parameters on the Electrochemical Properties of High-Surface-Area Mesoporous Titanium Oxide with Polypyrrole Nanowires in the Pores

2014 ◽  
Vol 1 (12) ◽  
pp. 2153-2162 ◽  
Author(s):  
Luke A. C. Smith ◽  
Frederick Romer ◽  
Michel L. Trudeau ◽  
Mark E. Smith ◽  
John V. Hanna ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Surface Area ◽  
Titanium Oxide ◽  
High Surface ◽  
High Surface Area ◽  
Polypyrrole Nanowires ◽  
Synthesis Parameters

Chemical and spectroscopic study of the nature of a vanadium oxide monolayer supported on a high-surface-area TiO2anatase

Langmuir ◽  
1986 ◽  
Vol 2 (5) ◽  
pp. 568-577 ◽  
Author(s):  
Guido. Busca ◽  
Gabriele. Centi ◽  
Leonardo. Marchetti ◽  
Ferruccio. Trifiro
Keyword(s):  
Vanadium Oxide ◽  
Spectroscopic Study ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area

scholarly journals Surface Modification Effect and Electrochemical Performance of LiOH-High Surface Activated Carbon as a Cathode Material in EDLC

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2187
Author(s):  
Zambaga Otgonbayar ◽  
Sunhye Yang ◽  
Ick-Jun Kim ◽  
Won-Chun Oh
Keyword(s):  
Activated Carbon ◽  
Cathode Material ◽  
Electrochemical Properties ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Oxidizing Agent ◽  
Peak Current ◽  
X Ray ◽  
Current Value

This study aimed to improve the performance of the activated carbon-based cathode by increasing the Li content and to analyze the effect of the combination of carbon and oxidizing agent. The crystal structure and chemical structure phase of Li-high surface area activated carbon material (Li-HSAC) was analyzed by X-ray diffraction (XRD) and Raman spectroscopy, the surface state and quantitative element by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX) and the surface properties with pore-size distribution by Brunauer–Emmett–Teller (BET), Barrett–Joyner–Halenda (BJH) and t-plot methods. The specific surface area of the Li-YP80F is 1063.2 m2/g, micropore volume value is 0.511 cm3/g and mesopore volume is 0.143 cm3/g, and these all values are higher than other LiOH-treated carbon. The surface functional group was analyzed by a Boehm titration, and the higher number of acidic groups compared to the target facilitated the improved electrolyte permeability, reduced the interface resistance and increased the electrochemical properties of the cathode. The oxidizing agent of LiOH treated high surface area of activated carbon was used for the cathode material for EDLC (electric double layer capacitor) to determine its electrochemical properties and the as-prepared electrode retained excellent performance after 10 cycles and 100 cycles. The anodic and cathodic peak current value and peak segregation of Li-YP80F were better than those of the other two samples, due to the micropore-size and physical properties of the sample. The oxidation peak current value appeared at 0.0055 mA/cm2 current density and the reduction peak value at –0.0014 mA/cm2, when the Li-YP80F sample used to the Cu-foil surface. The redox peaks appeared at 0.0025 mA/cm2 and –0.0009 mA/cm2, in the case of using a Nickel foil, after 10 cycling test. The electrochemical stability of cathode materials was tested by 100 recycling tests. After 100 recycling tests, peak current drop decreased the peak profile became stable. The LiOH-treated high surface area of activated carbon had synergistically upgraded electrochemical activity and superior cycling stability that were demonstrated in EDLC.

scholarly journals Nitrogen-rich green leaves of papaya and Coccinia grandis as precursors of activated carbon and their electrochemical properties

RSC Advances ◽  
2017 ◽  
Vol 7 (67) ◽  
pp. 42064-42072 ◽  
Author(s):  
Paweena Dulyaseree ◽  
Masatsugu Fujishige ◽  
Ichiro Yoshida ◽  
Yumiko Toya ◽  
Yasuo Banba ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Electrochemical Properties ◽  
Electric Conductivity ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Coccinia Grandis ◽  
Green Leaves

Activated nitrogen-rich green leaves of papaya and Coccinia grandis show high surface area without the detriment of the electric conductivity.

scholarly journals Noble metal sensitized invasive porous bioelectrodes: advanced medical device for enhanced neuronal activity and chronic alcohol treatment

RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43514-43522
Author(s):  
Hong Soo Kim ◽  
Hansaem Choi ◽  
Monica Claire Flores ◽  
Abdul Razzaq ◽  
Young Seob Gwak ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Surface Area ◽  
Medical Device ◽  
Noble Metal ◽  
Neuronal Activity ◽  
Neural Activity ◽  
High Surface ◽  
High Surface Area ◽  
Chronic Alcohol ◽  
Alcohol Detoxification

Novel metal sensitized invasive porous bioelectrodes (x-IPB, x = Ag, Au, Pt) have high surface area and enhanced electrochemical properties, resulting in increased neural activity and alcohol detoxification.

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