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dc.contributor.authorSun, Na
dc.contributor.authorLi, Zeyang
dc.contributor.authorZhang, Xian
dc.contributor.authorQin, Wenxiu
dc.contributor.authorZhao, Cuijiao
dc.contributor.authorZhang, Haimin
dc.contributor.authorNg, Dickon HL
dc.contributor.authorKang, Shenghong
dc.contributor.authorZhao, Huijun
dc.contributor.authorWang, Guozhong
dc.date.accessioned2019-09-10T02:23:00Z
dc.date.available2019-09-10T02:23:00Z
dc.date.issued2019
dc.identifier.issn2168-0485
dc.identifier.doi10.1021/acssuschemeng.9b00635
dc.identifier.urihttp://hdl.handle.net/10072/387152
dc.description.abstractThe lack of high-performance electrode materials is the main factor restricting the breakthrough of capacitive applications. Recently, integrating the advantages of different pore structures to optimize the material’s performance has led to great interest in the design of hierarchical porous carbon (HPC). Renewable, economical, and widely available kelp was selected as the carbon source to obtain a mesoporous structure using its naturally contained salts (Ca, Na, and so on) as template in this work. Subsequent chemical activation was used to get multimodal pores, and enrich the micropore structure. The micropores increase the specific surface area and provided abundant available adsorption sites, while mesopores improve not only the ionic conductivity but also the wettability of the material which is crucial in electrochemically related applications. When assembled in a pouch cell (capacitor), HPC showed a high specific capacitance of 190 F g–1 (1 A g–1, 1 mol L−1 TEABF4/AN) with a broad operation voltage range (0–2.7 V). Further applied to electric double-layer based capacitive deionization (CDI), it exhibited excellent salt removing capacity (27.2 mg g–1) with rapid response and efficient circularity. These excellent properties mainly result from its high surface area (2613.7 m2 g–1) and unique multimodal porous structure. We also verified the superior performance of a HPC material assembled CDI device driven by a pouch cell for energy-integrated applications.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherAmerican Chemical Society
dc.relation.ispartofpagefrom8735
dc.relation.ispartofpageto8743
dc.relation.ispartofissue9
dc.relation.ispartofjournalACS Sustainable Chemistry and Engineering
dc.relation.ispartofvolume7
dc.subject.fieldofresearchAnalytical Chemistry
dc.subject.fieldofresearchOther Chemical Sciences
dc.subject.fieldofresearchcode0301
dc.subject.fieldofresearchcode0399
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsTechnology
dc.subject.keywordsChemistry, Multidisciplinary
dc.subject.keywordsGreen & Sustainable Science & Technology
dc.titleHierarchical Porous Carbon Materials Derived from Kelp for Superior Capacitive Applications
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationSun, N; Li, Z; Zhang, X; Qin, W; Zhao, C; Zhang, H; Ng, DHL; Kang, S; Zhao, H; Wang, G, Hierarchical Porous Carbon Materials Derived from Kelp for Superior Capacitive Applications, ACS Sustainable Chemistry and Engineering, 2019, 7 (9), pp. 8735-8743
dc.date.updated2019-09-10T02:20:56Z
gro.hasfulltextNo Full Text
gro.griffith.authorZhao, Huijun
gro.griffith.authorZhang, Haimin


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