Nitrogen- and sulfur-enriched porous carbon from waste watermelon seeds for high-energy, high-temperature green ultracapacitors
DC Field | Value | Language |
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dc.contributor.author | Thangavel, Ranjith | - |
dc.contributor.author | Kannan, Aravindaraj G. | - |
dc.contributor.author | Ponraj, Rubha | - |
dc.contributor.author | Thangavel, Vigneysh | - |
dc.contributor.author | Kim, Dong-Won | - |
dc.contributor.author | Lee, Yun-Sung | - |
dc.date.accessioned | 2022-07-11T12:50:20Z | - |
dc.date.available | 2022-07-11T12:50:20Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2018-09 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/149452 | - |
dc.description.abstract | Electrochemical ultracapacitors exhibiting high energy output and an ultra-long cycle life, utilizing green and sustainable materials, are of paramount importance for next-generation applications. Developing an ultracapacitor that has high output energy under high power conditions in a high-voltage non-aqueous electrolyte and maintaining a long cycle life is an ongoing challenge. Herein, we utilize watermelon seeds, a bio-waste from watermelons, for use in high-voltage, high-energy, and high-power ultracapacitors in a sodium ion-based non-aqueous electrolyte. The as-synthesized hierarchically porous, high surface area carbon is surface-engineered with a large quantity of nitrogen and sulfur heteroatoms to give a high specific capacitance of similar to 252 F g(-1) at 0.5 A g(-1) and 90 F g(-1) at 30 A g(-1). An ultra-high stability of similar to 90% even after 150 000 cycles (10 A g(-1)) with 100% coulombic efficiency is achieved at room temperature (25 degrees C), equivalent to an ultra-low energy loss of similar to 0.0667% per 1000 cycles. Furthermore, the porous carbon demonstrates remarkable stability even at high temperature (55 degrees C) for 100000 cycles (10 A g(-1)), ensuring the safety of the device and enabling it to outperform graphene-based materials. A maximum energy of similar to 79 W h kg(-1) and a maximum power of 22.5 kW kg(-1) with an energy retention of similar to 28.2 W h kg(-1) was attained. The results provide new insights that will be of use in the development of high-performance, green ultracapacitors for advanced energy storage systems. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Nitrogen- and sulfur-enriched porous carbon from waste watermelon seeds for high-energy, high-temperature green ultracapacitors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Dong-Won | - |
dc.identifier.doi | 10.1039/c8ta05248d | - |
dc.identifier.scopusid | 2-s2.0-85053687541 | - |
dc.identifier.wosid | 000448147200053 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.36, pp.17751 - 17762 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 6 | - |
dc.citation.number | 36 | - |
dc.citation.startPage | 17751 | - |
dc.citation.endPage | 17762 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | DOUBLE-LAYER CAPACITORS | - |
dc.subject.keywordPlus | HIGH-POWER | - |
dc.subject.keywordPlus | DENSITY SUPERCAPACITORS | - |
dc.subject.keywordPlus | ACTIVATED CARBONS | - |
dc.subject.keywordPlus | KOH ACTIVATION | - |
dc.subject.keywordPlus | PORE STRUCTURE | - |
dc.subject.keywordPlus | SURFACE-AREA | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2018/TA/C8TA05248D | - |
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