An insight into the improved capacitive deionization performance of activated carbon treated by sulfuric acid

2015 ◽  
Vol 176 ◽  
pp. 755-762 ◽  
Author(s):  
Rui Niu ◽  
Haibo Li ◽  
Yulong Ma ◽  
Lijun He ◽  
Jin Li
Keyword(s):  
Activated Carbon ◽  
Sulfuric Acid ◽  
Capacitive Deionization ◽  
Insight Into

Comparative insight into the capacitive deionization behavior of the activated carbon electrodes by two electrochemical techniques

Desalination ◽  
2016 ◽  
Vol 379 ◽  
pp. 34-41 ◽  
Author(s):  
Po-I Liu ◽  
Li-Ching Chung ◽  
Chia-Hua Ho ◽  
Hsin Shao ◽  
Teh-Ming Liang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Electrochemical Techniques ◽  
Carbon Electrodes ◽  
Capacitive Deionization ◽  
Insight Into

scholarly journals 1.8 V Aqueous Symmetric Carbon-Based Supercapacitors with Agarose-Bound Activated Carbons in an Acidic Electrolyte

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1731
Author(s):  
Chih-Chung Lai ◽  
Feng-Hao Hsu ◽  
Su-Yang Hsu ◽  
Ming-Jay Deng ◽  
Kueih-Tzu Lu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Sulfuric Acid ◽  
Energy Density ◽  
Activated Carbons ◽  
High Energy ◽  
Aqueous Electrolytes ◽  
Alternative Material ◽  
Aqueous Cells ◽  
Acidic Electrolyte ◽  
Cycling Behavior

The specific energy of an aqueous carbon supercapacitor is generally small, resulting mainly from a narrow potential window of aqueous electrolytes. Here, we introduced agarose, an ecologically compatible polymer, as a novel binder to fabricate an activated carbon supercapacitor, enabling a wider potential window attributed to a high overpotential of the hydrogen-evolution reaction (HER) of agarose-bound activated carbons in sulfuric acid. Assembled symmetric aqueous cells can be galvanostatically cycled up to 1.8 V, attaining an enhanced energy density of 13.5 W h/kg (9.5 µW h/cm2) at 450 W/kg (315 µW/cm2). Furthermore, a great cycling behavior was obtained, with a 94.2% retention of capacitance after 10,000 cycles at 2 A/g. This work might guide the design of an alternative material for high-energy aqueous supercapacitors.

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,...

Roles of Sulfuric Acid in Elemental Mercury Removal by Activated Carbon and Sulfur-Impregnated Activated Carbon

2012 ◽  
Vol 46 (14) ◽  
pp. 7905-7912 ◽  
Author(s):  
Eric A. Morris ◽  
Donald W. Kirk ◽  
Charles Q. Jia ◽  
Kazuki Morita
Keyword(s):  
Activated Carbon ◽  
Sulfuric Acid ◽  
Elemental Mercury ◽  
Mercury Removal
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