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Dense porous monolithic carbon from Indonesian daikon leaf waste via NaOH–CO2 physicochemical activation for binder-free volumetric supercapacitors

Communications in Science and Technology · Vol. 11 No. 1 (2026) · hlm. 150–161

DOI
10.21924/cst.11.1.2026.2000
ISSN
2502-9266, 2502-9258
Terbit
2026-07-02
Penerbit
Komunitas Ilmuwan dan Profesional Muslim Indonesia
Bahasa
eng
Lisensi
creativecommons.org/licenses/by/4.0

Abstrak

High-performance volumetric supercapacitors are often limited by the trade-off between porosity and electrode density in biomass-derived carbon. Herein, binder-free monolithic carbon electrodes were produced from Indonesian daikon leaf waste through 0.5 M NaOH pretreatment followed by integrated N2–CO2 thermal processing. NaOH activation increased the surface area from 236 to 570 m2 g−1, increasing carbon purity from 88.34 to 95.45 wt% while retaining 4–5 wt% oxygen functionalities. The activated monolithic carbon electrode (VSAC) delivered a volumetric capacitance of 169 F cm−3 at 1 mV s−1 and 185 F cm−3 at 10 mA cm−2 in a symmetric two-electrode configuration without binders or conductive additives. VSAC also retained 83.2% capacitance at high scan rates and achieved 16.01 Wh L−1 at 838 W L−1. The improved performance arises from interconnected ion pathways, preserved electrode density, and surface oxygen functionalities, demonstrating a sustainable strategy for practical volumetric supercapacitors.

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  • Sultan Idris Education University
  • Universitas Nahdlatul Ulama Blitar
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Rekan penulisOrganisasiArtikel bersama
Apriwandi ApriwandiAfiliasi tidak diketahui7
Novi YantiAfiliasi tidak diketahui7
Agustino AgustinoAfiliasi tidak diketahui3
Awaludin MartinAfiliasi tidak diketahui3
Fainida HasanahAfiliasi tidak diketahui3
Ebigail Nur Tabita TambunanAfiliasi tidak diketahui3
NursyafniAfiliasi tidak diketahui3
Lini PratiwiAfiliasi tidak diketahui2
Widya Sinta MustikaAfiliasi tidak diketahui2
Wan Mery NursyaputriAfiliasi tidak diketahui2
Zeeva Khalilah FairuzyAfiliasi tidak diketahui2
Zahra KhumairahAfiliasi tidak diketahui2
Nursyafni NursyafniAfiliasi tidak diketahui2
Rahma Lia PutriAfiliasi tidak diketahui2
Julnaidi JulnaidiAfiliasi tidak diketahui2
Nidya ChitraningrumAfiliasi tidak diketahui2
Lazuardi UmarAfiliasi tidak diketahui1
Khairul IhsanAfiliasi tidak diketahui1
Rahmondia Nanda SetiadiAfiliasi tidak diketahui1
Faridah Lisa SupianSultan Idris Education University1
Yanuar HamzahAfiliasi tidak diketahui1
Niloofar MozaffariAfiliasi tidak diketahui1
Nastaran MozaffariAfiliasi tidak diketahui1
Akrajas Ali UmarAfiliasi tidak diketahui1
Ari Sulistyo RiniAfiliasi tidak diketahui1
Yolanda RatiAfiliasi tidak diketahui1
Afrida Helena SitorusAfiliasi tidak diketahui1
Zulkarnain UsmanAfiliasi tidak diketahui1
JasrilAfiliasi tidak diketahui1
Sugianto SugiantoUniversitas Nahdlatul Ulama Blitar1
Mukhlis MukhlisAfiliasi tidak diketahui1
R. TaslimAfiliasi tidak diketahui1
M. PaiszalAfiliasi tidak diketahui1
W. S. MustikaAfiliasi tidak diketahui1

Afiliasi berasal dari OpenAlex; metadata OAI-PMH jurnal tidak memuatnya. Penulis tanpa ID OpenAlex dicocokkan berdasarkan nama, sehingga dua orang bisa tergabung atau satu orang bisa terpisah.

Sumber metadata: OAI-PMH (metadata jurnal) https://cst.kipmi.or.id/oai, pertama di-harvest 8 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Dense porous monolithic carbon from Indonesian daikon leaf waste via NaOH–CO2 physicochemical activation for binder-free volumetric  supercapacitors</dc:title>
	<dc:creator>Apriwandi</dc:creator>
	<dc:creator>Sinta Mustika, Widya</dc:creator>
	<dc:creator>Julnaidi</dc:creator>
	<dc:creator>Puspita, Della</dc:creator>
	<dc:creator>Taslim, Rika</dc:creator>
	<dc:creator>Taer, Erman</dc:creator>
	<dc:subject xml:lang="en-US">Monolith</dc:subject>
	<dc:subject xml:lang="en-US">volumetric</dc:subject>
	<dc:subject xml:lang="en-US">carbon</dc:subject>
	<dc:subject xml:lang="en-US">electrode</dc:subject>
	<dc:subject xml:lang="en-US">supercapacitor</dc:subject>
	<dc:description xml:lang="en-US">High-performance volumetric supercapacitors are often limited by the trade-off between porosity and electrode density in biomass-derived carbon. Herein, binder-free monolithic carbon electrodes were produced from Indonesian daikon leaf waste through 0.5 M NaOH pretreatment followed by integrated N2–CO2 thermal processing. NaOH activation increased the surface area from 236 to 570 m2 g−1, increasing carbon purity from 88.34 to 95.45 wt% while retaining 4–5 wt% oxygen functionalities. The activated monolithic carbon electrode (VSAC) delivered a volumetric capacitance of 169 F cm−3 at 1 mV s−1 and 185 F cm−3 at 10 mA cm−2 in a symmetric two-electrode configuration without binders or conductive additives. VSAC also retained 83.2% capacitance at high scan rates and achieved 16.01 Wh L−1 at 838 W L−1. The improved performance arises from interconnected ion pathways, preserved electrode density, and surface oxygen functionalities, demonstrating a sustainable strategy for practical volumetric supercapacitors.</dc:description>
	<dc:publisher xml:lang="en-US">Komunitas Ilmuwan dan Profesional Muslim Indonesia</dc:publisher>
	<dc:date>2026-07-02</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://cst.kipmi.or.id/journal/article/view/2000</dc:identifier>
	<dc:identifier>10.21924/cst.11.1.2026.2000</dc:identifier>
	<dc:source xml:lang="en-US">Communications in Science and Technology; Vol. 11 No. 1 (2026); 150-161</dc:source>
	<dc:source xml:lang="id-ID">Communications in Science and Technology; Vol 11 No 1 (2026); 150-161</dc:source>
	<dc:source>2502-9266</dc:source>
	<dc:source>2502-9258</dc:source>
	<dc:source>10.21924/cst.11.1.2026</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://cst.kipmi.or.id/journal/article/view/2000/269</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2026 Communications in Science and Technology</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by/4.0</dc:rights>
</oai_dc:dc>