In this work, we present the preparation and characterization of biomass-derived activatedcarbon (AC) in view of its application as electrode material for electrochemical capacitors. Porouscarbons are prepared by pyrolysis of chestnut seeds and subsequent activation of the obtainedbiochar. We investigate here two activation methods, namely, physical by CO2and chemical usingKOH. Morphology, structure and specific surface area (SSA) of synthesized activated carbons areinvestigated by Brunauer-Emmett-Teller (BET) technique and scanning electron microscopy (SEM).Electrochemical studies show a clear dependence between the activation method (influencing porosityand SSA of AC) and electric capacitance values as well as rate capability of investigated electrodes.It is shown that well-developed porosity and high surface area, achieved by the chemical activationprocess, result in outstanding electrochemical performance of the chestnut-derived porous carbons.
Authors
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.3390/ma13204658
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2020
