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Preparation and electrochemical performance of nitrogen-enriched activated carbon derived from silkworm pupae waste
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Metadata
Document Title
Preparation and electrochemical performance of nitrogen-enriched activated carbon derived from silkworm pupae waste
Author
Sattayarut V., Chanthad C., Khemthong P., Kuboon S., Wanchaem T., Phonyiem M., Obata M., Fujishige M., Takeuchi K., Wongwiriyapan W., Khanchaitit P., Endo M.
Name from Authors Collection
Affiliations
College of Nanotechnology, King Mongkut's Institute of Technology, Ladkrabang Chalongkrung Rd., Ladkrabang, Bangkok, 10520, Thailand; National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand; Institute of Carbon Science and Technology, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8553, Japan
Type
Article
Source Title
RSC Advances
ISSN
20462069
Year
2019
Volume
9
Issue
18
Page
9878-9886
Open Access
Gold, Green
Publisher
Royal Society of Chemistry
DOI
10.1039/c9ra01090d
Abstract
In this study, nitrogen-enriched activated carbon from silkworm pupae waste (P-AC) was successfully prepared and its electrochemical performances in aqueous and organic electrolytes were investigated. Silkworm pupae waste is beneficial because it is a nitrogen-enriched, inexpensive, and locally available material. The preparation process includes hydrothermal treatment of the silkworm pupae waste at 200 °C, and chemical activation using zinc chloride at activation temperatures of 700, 800 and 900 °C (P700, P800, and P900, respectively). The nitrogen content in the P-ACs was approximately 3.8-6.4 at%, decreasing with activation temperature, while the surface area was approximately 1062-1267 m2 g-1, increasing with activation temperature. Compared to a commercial AC, the P-ACs show higher nitrogen content but lower surface area. Furthermore, the P800 exhibited superior specific capacitance (154.6 and 91.6 F g-1 in aqueous and organic electrolytes) compared to a commercial AC despite possessing smaller surface area. The high nitrogen content enhanced the pseudocapacitance and improved the electrical conductivity of the P-ACs. These properties were confirmed by relatively low series and charge transfer resistances, a capacity retention higher than 88% at a current density of 0.5 A g-1 and excellent cycling stability demonstrated by maintaining 97.6% of its capacitance after 3000 cycles. These results demonstrate that silkworm pupae waste is a viable source of nitrogen-enriched AC for application in supercapacitors. © 2019 The Royal Society of Chemistry.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
National Science and Technology Development Agency; National Nanotechnology Center; King Mongkut's Institute of Technology Ladkrabang; National Agriculture and Food Research Organization; Bio-oriented Technology Research Advancement Institution
License
CC BY-NC
Rights
Author
Publication Source
Scopus