Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries
<p dir="ltr">This is the first study to elucidate the aggregation mechanism and flow behavior of the dispersions of hard carbons (HCs) as a conductive matrix for semisolid sodium flow batteries. The flake–like morphology of primary particles and the surface chemistry (weakly hydrophi...
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2025
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| _version_ | 1864513531508948992 |
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| author | Hanan Dabash (22927810) |
| author2 | Mohamed Youssry (14158971) |
| author2_role | author |
| author_facet | Hanan Dabash (22927810) Mohamed Youssry (14158971) |
| author_role | author |
| dc.creator.none.fl_str_mv | Hanan Dabash (22927810) Mohamed Youssry (14158971) |
| dc.date.none.fl_str_mv | 2025-07-17T09:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1007/s10853-025-11149-1 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Investigation_of_aggregation_behavior_and_microstructure_of_hard_carbon_dispersions_for_semisolid_sodium_flow_batteries/30971032 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Materials engineering Hard carbons (HCs) Semisolid sodium flow batteries Conductive dispersions Aggregation mechanism Ballistic agglomeration |
| dc.title.none.fl_str_mv | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">This is the first study to elucidate the aggregation mechanism and flow behavior of the dispersions of hard carbons (HCs) as a conductive matrix for semisolid sodium flow batteries. The flake–like morphology of primary particles and the surface chemistry (weakly hydrophilic surface) of HCs mediate the domination of ballistic agglomeration mechanism in presence of sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) salt. As the HCs content increases, the aggregation mechanism does not alter and, instead, tenuous network turns compact due to densification of aggregates as a consequence of increased number density of unusual short bifurcations. Consequently, the dispersions show electrical percolating threshold (10 wt.% HCs) threefold higher than their rheological threshold (3 wt.%). Moreover, compact network with numerous bifurcations exhibit reversible shear thickening as a consequence of the formation of highly anisotropic flocs under shear flow. These findings endow rigorous determination for the composition and operational conditions of conductive dispersions for semisolid flow batteries.</p><h2 dir="ltr">Other Information</h2><p dir="ltr">Published in: Journal of Materials Science<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1007/s10853-025-11149-1" target="_blank">https://dx.doi.org/10.1007/s10853-025-11149-1</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_1afd057a15a5d96ddc2babcdec34c2de |
| identifier_str_mv | 10.1007/s10853-025-11149-1 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/30971032 |
| publishDate | 2025 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteriesHanan Dabash (22927810)Mohamed Youssry (14158971)EngineeringMaterials engineeringHard carbons (HCs)Semisolid sodium flow batteriesConductive dispersionsAggregation mechanismBallistic agglomeration<p dir="ltr">This is the first study to elucidate the aggregation mechanism and flow behavior of the dispersions of hard carbons (HCs) as a conductive matrix for semisolid sodium flow batteries. The flake–like morphology of primary particles and the surface chemistry (weakly hydrophilic surface) of HCs mediate the domination of ballistic agglomeration mechanism in presence of sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) salt. As the HCs content increases, the aggregation mechanism does not alter and, instead, tenuous network turns compact due to densification of aggregates as a consequence of increased number density of unusual short bifurcations. Consequently, the dispersions show electrical percolating threshold (10 wt.% HCs) threefold higher than their rheological threshold (3 wt.%). Moreover, compact network with numerous bifurcations exhibit reversible shear thickening as a consequence of the formation of highly anisotropic flocs under shear flow. These findings endow rigorous determination for the composition and operational conditions of conductive dispersions for semisolid flow batteries.</p><h2 dir="ltr">Other Information</h2><p dir="ltr">Published in: Journal of Materials Science<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1007/s10853-025-11149-1" target="_blank">https://dx.doi.org/10.1007/s10853-025-11149-1</a></p>2025-07-17T09:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1007/s10853-025-11149-1https://figshare.com/articles/journal_contribution/Investigation_of_aggregation_behavior_and_microstructure_of_hard_carbon_dispersions_for_semisolid_sodium_flow_batteries/30971032CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/309710322025-07-17T09:00:00Z |
| spellingShingle | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries Hanan Dabash (22927810) Engineering Materials engineering Hard carbons (HCs) Semisolid sodium flow batteries Conductive dispersions Aggregation mechanism Ballistic agglomeration |
| status_str | publishedVersion |
| title | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries |
| title_full | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries |
| title_fullStr | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries |
| title_full_unstemmed | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries |
| title_short | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries |
| title_sort | Investigation of aggregation behavior and microstructure of hard carbon dispersions for semisolid sodium flow batteries |
| topic | Engineering Materials engineering Hard carbons (HCs) Semisolid sodium flow batteries Conductive dispersions Aggregation mechanism Ballistic agglomeration |