Electrode Potentials of Carbon in Acid Electrolytes

1947 ◽  
Vol 92 (1) ◽  
pp. 411 ◽  
Author(s):  
N. M. Winslow
Keyword(s):  
Electrode Potentials

scholarly journals H2-CO2 polymer electrolyte fuel cell that generates power while evolving CH4 at the Pt0.8Ru0.2/C cathode

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shofu Matsuda ◽  
Yuuki Niitsuma ◽  
Yuta Yoshida ◽  
Minoru Umeda
Keyword(s):  
Fuel Cell ◽  
Electric Power ◽  
Polymer Electrolyte ◽  
Carbon Capture ◽  
Polymer Electrolyte Fuel Cell ◽  
Cell Temperature ◽  
Faradaic Efficiency ◽  
Carbon Capture And Utilization ◽  
Electrode Potentials ◽  
A Cell

AbstractGenerating electric power using CO2 as a reactant is challenging because the electroreduction of CO2 usually requires a large overpotential. Herein, we report the design and development of a polymer electrolyte fuel cell driven by feeding H2 and CO2 to the anode (Pt/C) and cathode (Pt0.8Ru0.2/C), respectively, based on their theoretical electrode potentials. Pt–Ru/C is a promising electrocatalysts for CO2 reduction at a low overpotential; consequently, CH4 is continuously produced through CO2 reduction with an enhanced faradaic efficiency (18.2%) and without an overpotential (at 0.20 V vs. RHE) was achieved when dilute CO2 is fed at a cell temperature of 40 °C. Significantly, the cell generated electric power (0.14 mW cm−2) while simultaneously yielding CH4 at 86.3 μmol g−1 h−1. These results show that a H2-CO2 fuel cell is a promising technology for promoting the carbon capture and utilization (CCU) strategy.

scholarly journals AN IMPROVED METHOD OF MEASURING GLASS ELECTRODE POTENTIALS

1930 ◽  
Vol 88 (2) ◽  
pp. 605-614
Author(s):  
Russel J. Fosbinder ◽  
Janetta Schoonover
Keyword(s):  
Glass Electrode ◽  
Improved Method ◽  
Electrode Potentials

Electrode potentials of partially reduced oxygen species, from dioxygen to water

2010 ◽  
Vol 49 (3) ◽  
pp. 317-322 ◽  
Author(s):  
Willem H. Koppenol ◽  
David M. Stanbury ◽  
Patricia L. Bounds
Keyword(s):  
Oxygen Species ◽  
Electrode Potentials

Ab initio modeling of electrochemical interfaces and determination of electrode potentials

2021 ◽  
pp. 173-200
Author(s):  
Jia‐Bo Le ◽  
Xiao‐Hui Yang ◽  
Yong‐Bing Zhuang ◽  
Feng Wang ◽  
Jun Cheng
Keyword(s):  
Ab Initio ◽  
Ab Initio Modeling ◽  
Electrode Potentials ◽  
Electrochemical Interfaces

Abstract 635: The Proximal AV Bundle in the Human Heart and Related Morbidity

Circulation ◽  
2008 ◽  
Vol 118 (suppl_18) ◽  
Author(s):  
Darlene K Racker
Keyword(s):  
Human Heart ◽  
Lucifer Yellow ◽  
Ventricular Outflow Tract ◽  
Left Ventricular ◽  
Canine Heart ◽  
Sa Node ◽  
Electrode Potentials ◽  
The Right ◽  
Av Bundle

INTRODUCTION: The proximal AV bundle (PAVB) has been shown to be the only input to the AV node (AVN) in the canine heart in anatomoelectrical reports over the past 20 years. The anatomic studies utilized photographic correlations of epi- and endocardial aspects of whole hearts through blocking, and serial histologic parallel, perpendicular and transverse plane Goldner Trichrome stained sections of the flattened heart; Karnovsky’s fixative at pH 7.2 and sucrose buffer rinses; direct 3D and stereotaxic analysis. Electrical studies, under direct observation of in-vitro superfused hearts, delineated unique wire, catheter, and micropipet electrode potentials via high K, transections, Lucifer Yellow iontophoresis and photoablations during spontaneous and paced SA node rhythms and with simultaneous SA node, atrionodal bundles, PAVB, AVN and distal AV bundle recordings. HYPOTHESIS: The PAVB exists in the human heart. METHODS AND RESULTS: Explanted normal human hearts, deemed unsuitable for transplantation, processed as above with transverse sections, revealed that the AVN (Figs. A–C ) is joined by the PAVB at a 90-degree angle (Figs. B, C ). These “normal” hearts from older patients (57– 80 yr) had atrophic or absent atrial myocardium. In Figure C , most of the right medial atrial wall myocardium, but not the left atrium (LA), had been replaced by fat. CONCLUSIONS: PAVB is the only AVN input in the human heart. As in the canine heart, PAVB also runs away from the annulus and is apposed to LA. Knowledge of the PAVB should be helpful in decreasing morbidity associated with clinical procedures. Care must be taken in ablating the fast superior atrionodal bundle pathway input to the PAVB. Figures A and B are from the same 60 yr and C is from a 71 yr old heart. AVN (A) is apposed to the left ventricular outflow tract (LVOFT and dotted line) along with the PAVB ( B and C ). But as seen in C , PAVB assumes a position apposed to LA, And, as in the dog heart, thereafter (not shown here) PAVB is completely apposed to LA.

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