Biomass-Based Fuels and Activated Carbon Electrode Materials: An Integrated Approach to Green Energy Systems

2017 ◽  
Vol 5 (4) ◽  
pp. 3046-3054 ◽  
Author(s):  
Jillian L. Goldfarb ◽  
Guolan Dou ◽  
Maryam Salari ◽  
Mark W. Grinstaff
Keyword(s):  
Activated Carbon ◽  
Electrode Materials ◽  
Energy Systems ◽  
Integrated Approach ◽  
Green Energy ◽  
Carbon Electrode

Electronically conducting polymers and activated carbon: Electrode materials in supercapacitor technology

1996 ◽  
Vol 8 (4) ◽  
pp. 331-334 ◽  
Author(s):  
Marina Mastragostino ◽  
Catia Arbizzani ◽  
Luca Meneghello ◽  
Ruggero Paraventi
Keyword(s):  
Activated Carbon ◽  
Conducting Polymers ◽  
Electrode Materials ◽  
Carbon Electrode ◽  
Electronically Conducting Polymers

Fabrication of Co3O4 nanoparticles decorated porous activated carbon electrode for the electrochemical detection of 4-nitrophenol

2021 ◽  
Author(s):  
Benadict Joseph Xavier ◽  
Christy Ezhilarasi J ◽  
Sea-Fue Wang ◽  
Elanthamilan Elaiyappillai ◽  
Sriram Balasubramanian ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Activated Carbon ◽  
Electrochemical Detection ◽  
Transition Metal Oxides ◽  
Electrode Materials ◽  
Activated Carbons ◽  
State Of The Art ◽  
Co3o4 Nanoparticles ◽  
Carbon Electrode ◽  
Porous Activated Carbon

State-of-the-art, electrochemical applications recently employ various activated carbons combined with transition metal oxides as electrode materials; exhibit superior conductivity and tailored porosity to offer both rapid electron transfer. In this...

Electrochemical Characteristics and Microstructures of Activated Carbon Powder Supercapacitors for Energy Storage

2018 ◽  
Vol 930 ◽  
pp. 597-602 ◽  
Author(s):  
Tayara Correia Gonsalves ◽  
Franks Martins Silva ◽  
Ligia Silverio Vieira ◽  
Julio Cesar Serafim Casini ◽  
Rubens Nunes de Faria
Keyword(s):  
Activated Carbon ◽  
Energy Storage ◽  
Room Temperature ◽  
Electrode Materials ◽  
Freezing Point ◽  
Storage Period ◽  
Carbon Powder ◽  
Electrochemical Characteristics ◽  
Carbon Electrode ◽  
Discharge Characteristics

In recent years, extensive investigations have focused on the study and improvement of supercapacitor electrode materials. The electric devices produced with these materials are used to store energy over time periods ranging from seconds to several days. The main factor that determines the energy storage period of a supercapacitor is its self-discharge rate, i.e., the gradual decrease in electric potential that occurs when the supercapacitor terminals are not connected to either a charging circuit or electric load. Self-discharge is attenuated at lower temperatures, resulting in an increased energy storage period. This paper addresses the temperature-dependence of self-discharge via a systematic study of supercapacitors with nominal capacitances of 1.0 and 10.0 F at DC potentials of 5.5 and 2.7 V, respectively. The specific capacitances, internal resistances, and self-discharge characteristics of commercial activated carbon electrode supercapacitors were investigated. Using cyclic voltammetry, the specific capacitances were determined to be 44.4 and 66.7 Fg−1 for distinct carbon electrode supercapacitors. The self-discharge characteristics were investigated at both room temperature and close to the freezing point. The internal resistances of the supercapacitors were calculated using the discharge curves at room temperature. The microstructures of the electrode materials were determined using scanning electron microscopy.

scholarly journals Study on the Aqueous Hybrid Supercapacitor Based on Carbon-coated NaTi2(PO4)3 and Activated Carbon Electrode Materials

2017 ◽  
Vol 75 (2) ◽  
pp. 241 ◽  
Author(s):  
Chaoqiang Wang ◽  
Feilong Qiu ◽  
Han Deng ◽  
Xiaoyu Zhang ◽  
Ping He ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Electrode Materials ◽  
Carbon Electrode ◽  
Hybrid Supercapacitor ◽  
Carbon Coated

scholarly journals Electrochemical Properties of Manganese Oxide Surface-Modified Activated Carbon Electrode Materials

2009 ◽  
Vol 25 (02) ◽  
pp. 229-236 ◽  
Author(s):  
GAO Qiang ◽  
◽  
LIU Ya-Fei ◽  
HU Zhong-Hua ◽  
ZHENG Xiang-Wei ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Electrochemical Properties ◽  
Manganese Oxide ◽  
Electrode Materials ◽  
Oxide Surface ◽  
Carbon Electrode ◽  
Modified Activated Carbon ◽  
Surface Modified

scholarly journals High Electrochemical Performance from Oxygen Functional Groups Containing Porous Activated Carbon Electrode of Supercapacitors

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2455 ◽  
Author(s):  
Wen Yang ◽  
Yanjie Li ◽  
Yanyan Feng
Keyword(s):  
Activated Carbon ◽  
Specific Surface ◽  
Surface Area ◽  
Functional Groups ◽  
Oxygen Content ◽  
Specific Surface Area ◽  
Electrode Materials ◽  
Critical Role ◽  
Carbon Electrode ◽  
Oxygen Functional Groups

Carbon electrode materials for double layer capacitors have attracted much attention, due to their low cost and abundant sources. Their low specific capacitance, however, hinders the development of carbon electrode materials. In this paper, the large specific surface area commercial activated carbons, rich in micropores, were initially oxygen-functionalized by treatment using concentrated H2SO4, saturated (NH4)2S2O8, and H2SO4/(NH4)2S2O4 mixed oxidants, respectively. The as-prepared samples were analyzed using N2 adsorption/desorption isotherms, X-ray photoelectron spectroscopy, and Boehm titration, and used as electrode materials for supercapacitors. Characterization results displayed that the oxidation treatment decreased the specific surface area along with increasing oxygen content. The electrode test showed that the electrochemical activity increased as oxygen content increased. The result that oxygen-functionalized activated carbon, even with a lower specific surface area but much more oxygen content, had higher capacity than pristine activated carbon, tells of the critical role of oxygen functional groups. The excellent capacitive performance suggests a good potential for oxygen functional carbon material to be a highly promising electrode material for supercapacitors.

Optimization of Nanostructures of Activated Carbon by Mechanical Methods

2010 ◽  
Vol 148-149 ◽  
pp. 1277-1280
Author(s):  
Sheng Juan Li ◽  
Shu Lin Wang ◽  
Lai Qiang Li ◽  
Bo Xu
Keyword(s):  
Activated Carbon ◽  
Pore Size ◽  
Active Carbon ◽  
Milling Time ◽  
Electrode Materials ◽  
Carbon Electrode ◽  
Preparation Technique ◽  
Mechanical Methods ◽  
Exciting Frequency ◽  
Vibration Milling

The activated carbons(AC) with high specific area were used widely as the electrode materials for the supercapacitors. Here we report the synthesis of nano-activated carbon electrode materials with different pore size distributions by vibration milling at room temperature. The size of the active carbon particles decreased from 20 to 30~50nm depended on the experimental conditions, and the particle distribution became more reasonable. The influence of important preparation technique condition(milling time， exciting frequency， vibration additive) on the nm-AC microstructure were found. Based on SEM, AFM, XRD and BET tests, we experienced the microstructure (crystalline, surface area, pore volume, pore size) of the nm-AC materials. It is found that manganese oxide as milling additive has more notable influence on improvement of material microstructure. Active carbon samples can gain more mesopores in shorter milling time and higher exciting frequency is useful to sample microstructure improvement. In short time，we can gain mesopore structure suitable nano-activated carbon electrode materials through vibration milling method.

High performance aqueous supercapacitor based on nitrogen-doped coal-based activated carbon electrode materials

2020 ◽  
Vol 580 ◽  
pp. 77-87 ◽  
Author(s):  
Duo Dong ◽  
Yongsheng Zhang ◽  
Yi Xiao ◽  
Tao Wang ◽  
Jiawei Wang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Electrode ◽  
Nitrogen Doped
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