| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Ojha, Manoranjan | - |
| dc.contributor.author | Le Houx, James | - |
| dc.contributor.author | Mukkabla, Radha | - |
| dc.contributor.author | Kramer, Denis | - |
| dc.contributor.author | Wills, Richard George Andrew | - |
| dc.contributor.author | Deepa, Melepurath | - |
| dc.date.accessioned | 2022-05-06T11:40:32Z | - |
| dc.date.available | 2022-05-06T11:40:32Z | - |
| dc.date.issued | 2019-06-20 | - |
| dc.identifier.issn | 0013-4686 | - |
| dc.description.abstract | A facile scalable strategy is reported for the synthesis of a hybrid of lithium titanate (Li 4 Ti 5 O 12 or LTO)and 1-pyrenecarboxylic acid decorated multiwalled carbon nanotubes (PCA@CNTs). LTO platelets comprising of quasi-spherical nanoparticles afford short diffusion paths for electrolyte ions. PCA@CNTs, enhance the electrical conductivity of the nearly insulating LTO by 3 orders of magnitude, thus maximizing the ion-uptake capability of the hybrid. Symmetric and asymmetric supercapacitors with the LTO/PCA@CNTs hybrid supported over Ni foam substrates are assembled with a novel Li + conducting alginate gel, in air without any inert conditions that are typically used for all LTO based devices. The gel shows an average ionic conductivity of ∼8.4 mS cm −1 at room temperature, and is found to be electrochemically stable over a wide operational voltage window of ∼2.5 V. Benefitting from the synergy of electrical double layer (EDL)storage afforded by PCA@CNTs, ion-storage by LTO through a redox reaction and EDL, and the ease ion-movement across the cell due to the open architecture of CNTs, the asymmetric LTO/PCA@CNTs hybrid cell outperforms the symmetric cells by a large margin. The best areal specific capacitance (SC), volumetric SC and energy density are ∼54 mF cm −2 , ∼4.3 F cm −3 (at 0.5 mA cm −2 )and ∼3.7 mWh cm −3 (at a power density of 49.6 mW cm −3 )significantly enhanced for the asymmetric LTO/PCA@CNTs hybrid cell, compared to the symmetric- PCA@CNTs and hybrid cells. The design is simple to implement and can serve as a prototype to develop a range of yet unexplored LTO/carbon nanomaterial based supercapacitors. | - |
| dc.description.sponsorship | Energy Technology Research Group, Faculty of Engineering and Physical Sciences, University of Southampton, United Kingdom | - |
| dc.language.iso | eng | - |
| dc.publisher | Elsevier | - |
| dc.relation.ispartof | Electrochimica Acta | - |
| dc.subject | Capacitance | - |
| dc.subject | Carbon nanotubes | - |
| dc.subject | Energy density | - |
| dc.subject | Lithium titanate | - |
| dc.subject | Supercapacitor | - |
| dc.title | Lithium titanate/pyrenecarboxylic acid decorated carbon nanotubes hybrid - Alginate gel supercapacitor | - |
| dc.type | Article | - |
| dc.identifier.doi | 10.1016/j.electacta.2019.03.211 | - |
| dcterms.bibliographicCitation.volume | 309 | - |
| dcterms.bibliographicCitation.issue | 20 June 2019 | - |
| dcterms.bibliographicCitation.pagestart | 253 | - |
| dcterms.bibliographicCitation.pageend | 263 | - |
| dcterms.bibliographicCitation.originalpublisherplace | New York, NY [u.a.] | - |
| local.submission.type | only-metadata | - |
| dc.type.article | Scientific Article | - |
| hsu.peerReviewed | ✅ | - |
| item.grantfulltext | none | - |
| item.languageiso639-1 | en | - |
| item.fulltext_s | No Fulltext | - |
| item.openairetype | Article | - |
| item.fulltext | No Fulltext | - |
| crisitem.author.dept | Computational Material Design | - |
| crisitem.author.parentorg | Fakultät für Maschinenbau und Bauingenieurwesen | - |
| Appears in Collections: | 6 - Publication references (without fulltext) of your publications before HSU | |
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