The Activated Carbon Electrode: A New, Experimentally‐Verified Mathematical Model for the Potential Distribution

1990 ◽  
Vol 137 (9) ◽  
pp. 2736-2745 ◽  
Author(s):  
John C. Card ◽  
Gérard Valentin ◽  
Alain Storck
Keyword(s):  
Mathematical Model ◽  
Activated Carbon ◽  
Potential Distribution ◽  
Carbon Electrode

scholarly journals Investigation of Imbalanced Activated Carbon Electrode Supercapacitors

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Tieshi He ◽  
Xue Ren ◽  
Junping Nie ◽  
Jun Ying ◽  
Kedi Cai
Keyword(s):  
Activated Carbon ◽  
Life Cycle ◽  
Electrode Potential ◽  
Potential Distribution ◽  
Weight Ratio ◽  
Negative Electrode ◽  
Carbon Electrode ◽  
Average Potential ◽  
Discharge Efficiency ◽  
Charge Discharge

Imbalanced supercapacitor was constructed by using various ratio of activated carbon (AC) of positive to negative electrode. The electrochemical behavior of imbalanced supercapacitor was investigated using 1.0 M spiro-(1,1′)-bipyrrolidinium tetrafluoroborate electrolyte in propylene carbonate. The results showed that there are some factors that influenced the imbalanced supercapacitor with different AC ratio of positive to negative electrode, the utilization of AC, electrode potential distribution, and life cycle. The imbalanced supercapacitor with an AC weight ratio of 80 : 120 of positive to negative electrode has an average potential distribution in each electrode, and it revealed the best electrochemical performance: specific capacitor was 39.6 F·g−1, while the charge-discharge efficiency was 97.2% after 2000 life cycle tests.

High Performance Hybrid Capacitive Deionization with Ag-coated Activated Carbon Electrode

2021 ◽  
Author(s):  
Hongsik Yoon ◽  
Jiho Lee ◽  
Taijin Min ◽  
Gunhee Lee ◽  
Minsub Oh
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Industrial Application ◽  
High Performance ◽  
Treatment System ◽  
Carbon Electrode ◽  
Capacitive Deionization ◽  
Water Treatment System

Capacitive deionization (CDI) has been highlighted as a promising electrochemical water treatment system. However, the low deionization capacity of CDI electrodes has been a major limitation for its industrial application,...

Surface Oxidation Modification and Performance of Activated Carbon Electrode Material

2011 ◽  
Vol 347-353 ◽  
pp. 3456-3458
Author(s):  
Ren Qing Wang ◽  
Mei Gen Deng
Keyword(s):  
Activated Carbon ◽  
Specific Capacitance ◽  
Functional Groups ◽  
Photoelectron Spectroscopy ◽  
Surface Oxidation ◽  
Constant Current ◽  
Carbon Electrode ◽  
Constant Current Charge ◽  
And Performance ◽  
Double Layer Capacitors

Superscript text Commercial activated carbon was modified by surface treatment using nitric acid, The modified carbons were characterized by X-ray photoelectron spectroscopy (XPS).The resultant carbon electrode-based electric double-layer capacitors (EDLCs)were assembled with 1 mol/L （NH4）2SO4 as the electrolyte. The influence of introduced functional groups, such as hydroxyl and carbonyl, on the performance of EDLCs was studied by Constant current charge-discharge. These functional groups significantly improved the wettability of AC. As a result, the specific capacitance of the carbon modified with 40wt.%HNO3 achieved a specific capacitance of 223.45 F/g at a current density of 5mA/cm2, which is 100.9% higher than that of original AC.

Sign in / Sign up

Export Citation Format

Share Document