Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed
Authorized Users Only
Krstić, Jugoslav B.
Krstić, Sanja S.
Bajuk-Bogdanović, Danica V.
Kaluđerović, Branka V.
Mentus, Slavko V.
MetadataShow full item record
Activated carbon was prepared using plane tree seed as a cheap and renewable raw material. The samples were prepared by carbonization under N-2 atmosphere up to 850 degrees C, and activation in CO2 atmosphere at different both temperatures (750 and 850 degrees C) and times of activation (0.3,1 and 2 h). The influence of activation parameters on physicochemical properties was studied by XRPD, Raman spectroscopy, FTIR, N-2 physisorption, SEM and electrochemical methods. The pore structure was correlated to the specific capacitance and the amount of hydrogen stored, in alkaline, neutral and acidic electrolyte solution. The relationship of asymmetrical shape of CV curves with the porosity of samples has served to better understand some unclear issues related to the complex mechanism of charge storage. The sample activated at 850 degrees C for 2 h displayed the best behavior. At a high scan rate of 300 mV s(-1), its capacitance, amounted to similar to 26.8 mu F cm(-2) 19.69 mu F cm(-2) and ...25.8 mu Fcm(-2) in KOH, Na2SO4, and H2SO4 solutions, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
Keywords:Activated carbon / Pseudocapacitor / Aqueous neutral electrolyte / Hydrogen storage
Source:Electrochimica Acta, 2016, 222, 156-171
- Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-45012)
- Functional, Functionalized and Advanced Nanomaterials (RS-45005)
- Lithium-ion batteries and fuel cells - research and development (RS-45014)
- NATO through the Science for Peace Project [EAP.SFPP 984925-DURAPEM]