Operando Local pH Mapping of Electrochemical and Bioelectrochemical Reactions Occurring at an Electrode Surface: Effect of the Buffer Concentration

2021 ◽  
Vol 8 (20) ◽  
pp. 3923-3935
Author(s):  
Paolo Bollella ◽  
Artem Melman ◽  
Evgeny Katz
Keyword(s):  
Electrode Surface ◽  
Surface Effect ◽  
Buffer Concentration ◽  
Local Ph

scholarly journals Operando surface science methodology reveals surface effect in charge storage electrodes

2020 ◽  
Author(s):  
Chao Wang ◽  
Yanxiao Ning ◽  
Haibo Huang ◽  
Shiwen Li ◽  
Chuanhai Xiao ◽  
...  
Keyword(s):  
Surface Science ◽  
Electrode Surface ◽  
Surface Effect ◽  
Specific Capacity ◽  
Surface Region ◽  
Charge Storage ◽  
Energy Storage Devices ◽  
Graphite Cathode ◽  
Surface And Interface ◽  
Science Methodology

Abstract Surface and interface play critical roles in energy storage devices, calling for operando characterization techniques to probe the electrified surfaces/interfaces. In this work, surface science methodology including electron spectroscopy and scanning probe microscopy has been successfully applied to visualize electrochemical processes at operating electrode surfaces in an Al/graphite model battery. Intercalation of anions together with cations is directly observed in surface region of the graphite electrode with tens of nanometers thickness, whose concentration is amazingly one order higher than that in bulk. An intercalation pseudocapacitance mechanism and a double specific capacity in the electrode surface region are expected based on the super-dense intercalants and anion/cation co-intercalation, which are in sharp contrast with the battery-like mechanism in the electrode bulk. The distinct electrochemical mechanism at electrode surface is well verified by performance tests of real battery devices, showing that surface-dominant nanometer thick graphite cathode outperforms bulk-dominant micrometer thick graphite cathode. Our findings highlight the important surface effect of working electrodes in charge storage systems.

Experimental and theoretical investigation of γ-butyrolactone decomposition on lithium electrode surface. Effect of Li3N layer

2010 ◽  
Vol 59 (3) ◽  
pp. 510-516 ◽  
Author(s):  
O. V. Yarmolenko ◽  
G. Z. Tulibaeva ◽  
G. N. Petrova ◽  
A. F. Shestakov ◽  
N. I. Shuvalova ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Electrode Surface ◽  
Surface Effect ◽  
Lithium Electrode

Kinetics of compact layer formation and growth of 1,10-phenanthroline at the electrode surface

1990 ◽  
Vol 87 ◽  
pp. 1597-1607 ◽  
Author(s):  
L Benedetti ◽  
M Borsari ◽  
C Fontanesi ◽  
G Battistuzzi Gavioli
Keyword(s):  
Electrode Surface ◽  
Layer Formation ◽  
Compact Layer ◽  
Kinetics Of

The Effect of Pentosan Polysulphate (SP54) on the Fibrinolytic Enzyme System - A Human Volunteer and Experimental Animal Study

1985 ◽  
Vol 54 (04) ◽  
pp. 833-837 ◽  
Author(s):  
N A Marsh ◽  
P M Peyser ◽  
L J Creighton ◽  
M Mahmoud ◽  
P J Gaffney
Keyword(s):  
Plasminogen Activator ◽  
Surface Effect ◽  
Ex Vivo ◽  
Vena Cava ◽  
Tissue Type ◽  
Similar Response ◽  
Small Contribution ◽  
Thrombosis Model ◽  
Pentosan Polysulphate

SummaryPentosan polysulphate causes an increase in plasminogen activator activity in plasma both after oral ingestion and after subcutaneous injection. The effect is greatest after 3 h and has disappeared by 6 h. Repeat doses by mouth over 5 days elicit a similar response. The recorded increase in activity is due largely to the release of tissue-type plasminogen activator (tPA) from the endothelium according to the antigen assay although there could be a small contribution from Factor XH-related “intrinsic” fibrinolysis induced in vitro. SP54 enhances activity ex vivo by a non-specific surface effect, and this phenomenon may contribute the increased levels of activity seen in vitro. Administration of SP54 to animals elicits a similar increase in activator activity, the intramuscular route being slightly more effective. Results with an inferior vena cava thrombosis model in the rat suggest that pentosan polysulphate may induce a thrombolytic effect.

A Photo-ionization VOCs Sensor Developed the Resistance to Contamination of Electrode Surface

2011 ◽  
Vol 131 (2) ◽  
pp. 88-89
Author(s):  
Yasuyuki Hirano ◽  
Elito Kazawa ◽  
Yoshiaki Haramoto ◽  
Hiromichi Yoshida
Keyword(s):  
Electrode Surface ◽  
Photo Ionization
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