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http://hdl.handle.net/1942/41930
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DC Field | Value | Language |
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dc.contributor.author | ULU, Fulya | - |
dc.contributor.author | Batuk, Maria | - |
dc.contributor.author | Hadermann, Joke | - |
dc.contributor.author | SAFARI, Momo | - |
dc.contributor.author | DE SLOOVERE, Dries | - |
dc.contributor.author | MYLAVARAPU, Satish Kumar | - |
dc.contributor.author | D'HAEN, Jan | - |
dc.contributor.author | JOOS, Bjorn | - |
dc.contributor.author | VAN BAEL, Marlies | - |
dc.contributor.author | HARDY, An | - |
dc.date.accessioned | 2023-12-11T10:36:00Z | - |
dc.date.available | 2023-12-11T10:36:00Z | - |
dc.date.issued | 2023 | - |
dc.date.submitted | 2023-12-11T09:31:42Z | - |
dc.identifier.citation | RSC Advances, 13 (47) , p. 33146 -33158 | - |
dc.identifier.uri | http://hdl.handle.net/1942/41930 | - |
dc.description.abstract | LNMO (LiNi0.5Mn1.5O4-delta) is a high-energy density positive electrode material for lithium ion batteries. Unfortunately, it suffers from capacity loss and impedance rise during cycling due to electrolyte oxidation and electrode/electrolyte interface instabilities at high operating voltages. Here, a solution-gel synthesis route was used to coat 0.5-2.5 mu m LNMO particles with amorphous Li-Ti-O (LTO) for improved Li conduction, surface structural stability and cyclability. High-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) analysis coupled with energy dispersive X-ray (EDX) showed Ti-rich amorphous coatings/islands or Ti-rich spinel layers on many of the LTO-modified LNMO facets, with a thickness varying from about 1 to 10 nm. The surface modification in the form of amorphous islands was mostly possible on high-energy crystal facets. Physicochemical observations were used to propose a molecular mechanism for the surface modification, combining insights from metalorganic chemistry with the crystallographic properties of LNMO. The improvements in functional properties were investigated in half cells. The cell impedance increased faster for the bare LNMO compared to amorphous LTO modified LNMO, resulting in R-ct values as high as 1247 Omega (after 1000 cycles) for bare LNMO, against 216 Omega for the modified material. At 10C, the modified material boosted a 15% increase in average discharge capacity. The improvements in electrochemical performance were attributed to the increase in electrochemically active surface area, as well as to improved HF-scavenging, resulting in the formation of protective byproducts, generating a more stable interface during prolonged cycling. | - |
dc.description.sponsorship | The authors acknowledge the Research Foundation Flanders (FWO Vlaanderen, grant numbers G040116N and G053519N), SBO XL-Lion, the European Regional Development Fund ERDF, Flanders Innovation & Entrepreneurship and the Province of Limburg (project 936). The authors also thank Elsy Thijssen and An-Sofie Kelchtermans for the ICP-AES measurements, Bart Ruttens for the XRD measurements, Derese Deste and Ragha Thiruvallur Eachambadi for the C-AFM measurements, Hilde Pellaers for the SEM sample preparation, Sébastien Sallard and Ahmed Shafique for the electrical conductivity measurements. | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.rights | Open Access Article. Published on 09 November 2023. Downloaded on 12/11/2023 10:27:07 AM. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. | - |
dc.title | Solution-gel-based surface modification of LiNi0.5Mn1.5O4−δ with amorphous Li–Ti–O coating | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 33158 | - |
dc.identifier.issue | 47 | - |
dc.identifier.spage | 33146 | - |
dc.identifier.volume | 13 | - |
local.format.pages | 13 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Okudur, FU (corresponding author), Hasselt Univ, Inst Mat Res Imo Imomec, EnergyVille 2,Thor Pk 8320,3590 Diepenbeek, B-3600 Diepenbeek, Belgium.; Okudur, FU (corresponding author), Imec Div Imomec, Design & Synth Inorgan Mat, Agoralaan,EnergyVille 2,Thor Pk 8320,3590 Diepenbe, B-3600 Diepenbeek, Belgium. | - |
dc.description.notes | fulya.uluokudur@imec.be; maria.batuk@uantwerpen.be; | - |
dc.description.notes | joke.hadermann@uantwerpen.be; momo.safari@uhasselt.be; | - |
dc.description.notes | dries.desloovere@uhasselt.be; bjorn.joos@uhasselt.be; | - |
dc.description.notes | jan.dhaen@uhasselt.be; an.hardy@uhasselt.be | - |
local.publisher.place | THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.identifier.doi | 10.1039/d3ra05599j | - |
dc.identifier.pmid | 37954421 | - |
dc.identifier.isi | 001102666700001 | - |
local.provider.type | wosris | - |
local.description.affiliation | [Ulu Okudur, Fulya; De Sloovere, Dries; Kumar Mylavarapu, Satish; Joos, Bjorn; Van Bael, Marlies K.; Hardy, An] Hasselt Univ, Inst Mat Res Imo Imomec, EnergyVille 2,Thor Pk 8320,3590 Diepenbeek, B-3600 Diepenbeek, Belgium. | - |
local.description.affiliation | [Ulu Okudur, Fulya; De Sloovere, Dries; Kumar Mylavarapu, Satish; Joos, Bjorn; Van Bael, Marlies K.; Hardy, An] Imec Div Imomec, Design & Synth Inorgan Mat, Agoralaan,EnergyVille 2,Thor Pk 8320,3590 Diepenbe, B-3600 Diepenbeek, Belgium. | - |
local.description.affiliation | [Batuk, Maria; Hadermann, Joke] Univ Antwerp, EMAT, Groenenborgerlaan 171, B-2020 Antwerp, Belgium. | - |
local.description.affiliation | [Safari, Mohammadhosein] Hasselt Univ, Inst Mat Res IMO IMOMEC, Agoralaan,EnergyVille 2,Thor Pk 8320,3600 Genk, B-3590 Diepenbeek, Belgium. | - |
local.description.affiliation | [Safari, Mohammadhosein] Imec Div Imomec, Agoralaan,EnergyVille 2,Thor Pk 8320,3590 Diepenbe, B-3600 Diepenbeek, Belgium. | - |
local.description.affiliation | [D'Haen, Jan] Hasselt Univ, Inst Mat Res Imo Imomec, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. | - |
local.description.affiliation | [D'Haen, Jan] Imec Div Imomec, Mat Phys, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. | - |
local.uhasselt.international | no | - |
item.fulltext | With Fulltext | - |
item.fullcitation | ULU, Fulya; Batuk, Maria; Hadermann, Joke; SAFARI, Momo; DE SLOOVERE, Dries; MYLAVARAPU, Satish Kumar; D'HAEN, Jan; JOOS, Bjorn; VAN BAEL, Marlies & HARDY, An (2023) Solution-gel-based surface modification of LiNi0.5Mn1.5O4−δ with amorphous Li–Ti–O coating. In: RSC Advances, 13 (47) , p. 33146 -33158. | - |
item.accessRights | Open Access | - |
item.contributor | ULU, Fulya | - |
item.contributor | Batuk, Maria | - |
item.contributor | Hadermann, Joke | - |
item.contributor | SAFARI, Momo | - |
item.contributor | DE SLOOVERE, Dries | - |
item.contributor | MYLAVARAPU, Satish Kumar | - |
item.contributor | D'HAEN, Jan | - |
item.contributor | JOOS, Bjorn | - |
item.contributor | VAN BAEL, Marlies | - |
item.contributor | HARDY, An | - |
crisitem.journal.eissn | 2046-2069 | - |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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Solution-gel-based surface modification of LiNi0.5Mn1.5O4−δ with amorphous Li–Ti–O coating.pdf | Published version | 4.29 MB | Adobe PDF | View/Open |
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