scholarly journals The effect of the composition of the dispersing medium of oxide sols on the electrocatalytic activity of sol-gel obtained RuO2-TiO2/Ti anodes

2001 ◽  
Vol 66 (11-12) ◽  
pp. 847-857 ◽  
Author(s):  
Dejan Mitrovic ◽  
Vladimir Panic ◽  
Aleksandar Dekanski ◽  
Slobodan Milonjic ◽  
Radoslav Atanasoski ◽  
...  
Keyword(s):  
Surface Area ◽  
Electrocatalytic Activity ◽  
Sol Gel ◽  
Active Surface ◽  
Proton Exchange ◽  
Alcohol Molecule ◽  
Active Surface Area ◽  
Electrochemically Active ◽  
Dispersing Medium ◽  
Electrochemically Active Surface

The influence of the addition of methanol, ethanol, 1-propanol and 2-propanol to the dispersing medium of amixture of RuO2 and TiO2 sols on the electrochemically active surface area for proton exchange, as well as on the electrocatalytic activity for the chlorine evolution reaction (CER) of RuO2-TiO2/Ti electrode obtained by sol-gel procedure was investigated. The electrochemically active surface area was examined by cyclic voltammetry, while the analysis of the activity for the CER was performed by polarization measurements. The stability of the obtained anode coatings was also checked by an accelerated stability test. The anode properties depend on the number of C atoms in the alcohol molecule, as well as on the elapsed time between the preparation of the sols/alcohol mixture and its application onto the titanium support. The addition of alcohol increased the activity of the anodes for the CER, compared to those prepared without the addition, but their stability was smaller.

scholarly journals An Electrocatalytic Activity of AuCeO2/Carbon Catalyst in Fuel Cell Reactions: Oxidation of Borohydride and Reduction of Oxygen

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 342
Author(s):  
Raminta Stagniūnaitė ◽  
Virginija Kepenienė ◽  
Aldona Balčiūnaitė ◽  
Audrius Drabavičius ◽  
Vidas Pakštas ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Surface Area ◽  
Sodium Borohydride ◽  
Electrocatalytic Activity ◽  
Active Surface ◽  
Reduction Reaction ◽  
Active Surface Area ◽  
Onset Potential ◽  
Electrochemically Active ◽  
Electrochemically Active Surface

This paper describes the investigation of electrocatalytic activity of the AuCeO2/C catalyst, prepared using the microwave irradiation method, towards the oxidation of sodium borohydride and oxygen reduction reactions in an alkaline medium. It was found that the obtained AuCeO2/C catalyst with Au loading and electrochemically active surface area of Au nanoparticles (AuNPs) equal to 71 µg cm−2 and 0.05 cm2, respectively, showed an enhanced electrocatalytic activity towards investigated reactions, compared with the Au/C catalyst with an Au loading and electrochemically active surface area of AuNPs equal to 78 µg cm−2 and 0.19 cm2, respectively. The AuCeO2/C catalyst demonstrated ca. 4.5 times higher current density values for the oxidation of sodium borohydride compared with those of the bare Au/C catalyst. Moreover, the onset potential of the oxygen reduction reaction (0.96 V) on the AuCeO2/C catalyst was similar to the commercial Pt/C (0.98 V).

Ag–Ni core–shell nanowires with superior electrocatalytic activity for alkaline hydrogen evolution reaction

2017 ◽  
Vol 5 (32) ◽  
pp. 16646-16652 ◽  
Author(s):  
Cong Zhang ◽  
Sijia Liu ◽  
Zhongzhang Mao ◽  
Xin Liang ◽  
Biaohua Chen
Keyword(s):  
Surface Area ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Active Surface ◽  
Core Shell ◽  
Active Surface Area ◽  
Electrochemically Active ◽  
Electrochemically Active Surface ◽  
Shell Nanowires

Ag–Ni nanowires with high electrochemically active surface area and small impedances were synthesized to show enhanced alkaline HER activity.

Microstructure and electrochemically active surface area of PtM/C electrocatalysts

2011 ◽  
Vol 47 (8) ◽  
pp. 933-939 ◽  
Author(s):  
V. E. Guterman ◽  
S. V. Belenov ◽  
T. A. Lastovina ◽  
E. P. Fokina ◽  
N. V. Prutsakova ◽  
...  
Keyword(s):  
Surface Area ◽  
Active Surface ◽  
Active Surface Area ◽  
Electrochemically Active ◽  
Electrochemically Active Surface

scholarly journals Evaluation of the Electrochemically Active Surface Area of Microelectrodes by Capacitive and Faradaic Currents

2019 ◽  
Vol 6 (17) ◽  
pp. 4411-4417 ◽  
Author(s):  
Alina N. Sekretaryova ◽  
Mikhail Yu. Vagin ◽  
Anton V. Volkov ◽  
Igor V. Zozoulenko ◽  
Mats Eriksson
Keyword(s):  
Surface Area ◽  
Active Surface ◽  
Active Surface Area ◽  
Electrochemically Active ◽  
Electrochemically Active Surface
Sign in / Sign up

Export Citation Format

Share Document