# Performance of Candlenut Shell (Alleuretus moluccana) Based Supercapacitor Electrode with Acid Electrolytes and Their Salts
> Zakir M.

URL kanonis: https://discover.unhas.ac.id/publications/performance-of-candlenut-shell-alleuretus-moluccana-based-supercapacitor-electro
Jurnal / Konferensi: Iop Conference Series Materials Science and Engineering
Tahun terbit: 2019
DOI: https://doi.org/10.1088/1757-899X/619/1/012042
ISSN: 17578981
Citations: 4

## Authors
- Zakir M.

## Abstract
Abstract Candlenut shell was used as the precursor for activated carbon-based electrodes which prepared through two stages, namely carbonization and activation. The surface of the activated carbon was modified with HNO 3 . Characterization of carbons and activated carbon was performed by SEM, BET, FT-IR test and capacitance analysis using Cyclic Voltammetry. The result of SEM analysis shows that carbon pore formation has occurred after activation with H 3 PO 4 . The surface area of carbon and activated carbon determined by the BET method is 125,828 m 2 /g and 142,435 m 2 /g, respectively. The results of FTIR and Boehm titration analysis showed an increase in oxygen-containing functional groups after modification with HNO 3 . Based on the results of the analysis using Cyclic Voltammetry obtained the highest specific capacitance of unmodified activated carbon is 145.49 mF/g in H2SO4 0.5M electrolyte. In addition, the highest specific capacitance of activated carbon modified with HNO 3 is 155.92 mF/g obtained in HCl 0.1 M electrolyte. In the same condition, the contribution of salt electrolyte (Na 2 SO 4 0.5 M and 0.1 M) in the specific capacitance of candlenut shell based supercapacitor electrodes is a little bit lower compared to the acid electrolytes.

## Keywords
- Activated carbon
- Supercapacitor
- Electrolyte
- Cyclic voltammetry
- Carbonization
- Carbon fibers
- Titration
- Specific surface area
- Chemistry
- Capacitance
- Inorganic chemistry
- Nitric acid
- BET theory
- Fourier transform infrared spectroscopy
- Electrochemistry
- Electrode
- Materials science
- Nuclear chemistry
- Chemical engineering
- Adsorption
- Organic chemistry
- Catalysis
- Composite material
- Engineering
- Composite number
- Physical chemistry

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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