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Chitosan based solid electrolyte doped with new azo-azomethine additive for electric double-layer capacitor (EDLCs)

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cris.virtual.department Universiti Malaysia Perlis
cris.virtual.department Universiti Malaysia Perlis
cris.virtualsource.department 60b8b0d0-dbbe-4e6f-9214-784f9b50f290
cris.virtualsource.department 0ee4e8a6-6bb1-4bc3-8346-41b252a84740
dc.contributor.author Tuan Siti Fatimah Tuan Mohd Pauzi
dc.contributor.author Rafizah Rahamathullah
dc.contributor.author M.N. Hafiza
dc.contributor.author Qian Yee Ang
dc.contributor.author Wan M. Khairul
dc.contributor.author Artiqah Khairudin
dc.contributor.author M.I. Rosli
dc.contributor.author Fatin Saiha Omar
dc.date.accessioned 2026-01-21T01:24:12Z
dc.date.available 2026-01-21T01:24:12Z
dc.date.issued 2025-06-10
dc.description.abstract Biopolymer-based solid electrolytes are gaining attention for their potential in electric double-layer capacitors (EDLCs). However, their practical application is limited by drawbacks such as low electrical performance and increased corrosive reactivity due to excessive amount of plasticizers. This present study investigates the effect of an azo-azomethine (AI) additive featuring hybrid (-N=N-) and (-CH=N-) groups, incorporated into a chitosan biopolymer matrix as a novel electrolyte for enhancing EDLC performance. Simulated results of the molecular electrostatic potential (MEP) and frontier molecular orbitals (FMO) suggest that the nitrogen (N) and oxygen (O) atoms from the azo and alkoxy substituents modulate the energy level of AI by reducing the HOMO-LUMO gap to 2.17 eV. The interaction between AI additive and chitosan was assessed using FTIR and powder-XRD analyses. The ionic conductivity of the prepared SBEs also increased by eight orders of magnitude from 7.38 × 10−10 S/cm to 1.27 × 10−2 S/cm with the contribution of 8 wt% of the additive. The EDLC cell was constructed by placing the prepared SBE within carbon-based electrodes, resulting in a specific capacitance 2.05 × 10−5 F/g. Thus, these findings demonstrate promising potential for electrochemical device applications.
dc.identifier.doi 10.1016/j.ijhydene.2025.02.368
dc.identifier.uri https://www.sciencedirect.com/journal/international-journal-of-hydrogen-energy
dc.identifier.uri https://www.sciencedirect.com/
dc.identifier.uri https://hdl.handle.net/20.500.14170/15811
dc.language.iso en
dc.publisher Elsevier Ltd
dc.relation.ispartof International Journal of Hydrogen Energy
dc.relation.issn 0360-3199
dc.subject Additive
dc.subject Azo-azomethine
dc.subject Capacitor
dc.subject Conductivity
dc.subject DFT
dc.subject Electrolyte
dc.title Chitosan based solid electrolyte doped with new azo-azomethine additive for electric double-layer capacitor (EDLCs)
dc.type journal-article
dspace.entity.type Publication
oaire.citation.endPage 1141
oaire.citation.startPage 1131
oaire.citation.volume 136
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Terengganu
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Terengganu
oairecerif.author.affiliation Universiti Kebangsaan Malaysia
oairecerif.author.affiliation Universiti Kebangsaan Malaysia
oairecerif.author.affiliation Universiti Kebangsaan Malaysia
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