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dc.contributor.author
Mercer, Michael  
dc.contributor.author
Nagarathinam, Mangayarkarasi  
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Gavilán Arriazu, Edgardo Maximiliano  
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Binjrajka, Anshika  
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Panda, Swoyam  
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Au, Heather  
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Crespo Ribadeneyra, Maria  
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Titirici, Maria Magdalena  
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Leiva, Ezequiel Pedro M.  
dc.contributor.author
Hoster, Harry Ernst  
dc.date.available
2024-02-08T13:23:29Z  
dc.date.issued
2023-02  
dc.identifier.citation
Mercer, Michael; Nagarathinam, Mangayarkarasi; Gavilán Arriazu, Edgardo Maximiliano; Binjrajka, Anshika; Panda, Swoyam; et al.; Sodiation energetics in pore size controlled hard carbons determined via entropy profiling; Royal Society of Chemistry; Journal of Materials Chemistry A; 11; 12; 2-2023; 6543-6555  
dc.identifier.issn
2050-7488  
dc.identifier.uri
http://hdl.handle.net/11336/226408  
dc.description.abstract
Hard carbons show considerable potential as anode materials in emerging sodium-ion battery technologies. Recent work suggests sodiation of hard carbon proceeds by insertion of sodium at defects, within the interlayers and inside the nanopores. The energetics of these processes dictate the characteristic sloping region and plateau when hard carbon is charged/discharged with sodium. However, the driving forces affecting these processes, and particularly sodium filling into nanopores, are under debate and are holding back controlled material optimisation. We apply entropy profiling (EP), where the cell temperature is changed under open circuit conditions, to yield additional insights into sodium insertion in hard carbons of systematically controlled pore size. Features from EP vary with the pore size, allowing us to precisely determine the onset of nanopore filling. Comparing the system entropy and enthalpy data to models, we can quantify the energetics of sodium inside the nanopores. The average binding energy of sodium in the pores is found to be inversely proportional to the pore radius of curvature, which is attributed to the scaling of the surface area to volume inside the pores. This simple structure-property relationship provides a rational framework to tune the cell cut-off voltage of sodium-ion cells based on hard carbon, potentially enabling future materials of improved safety and longevity.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Royal Society of Chemistry  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/  
dc.subject
SODIATION  
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ENTROPY PROFILING  
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PORE SIZE  
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HARD CARBON  
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Físico-Química, Ciencia de los Polímeros, Electroquímica  
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Ciencias Químicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Sodiation energetics in pore size controlled hard carbons determined via entropy profiling  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2024-02-08T10:56:07Z  
dc.identifier.eissn
2050-7496  
dc.journal.volume
11  
dc.journal.number
12  
dc.journal.pagination
6543-6555  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Mercer, Michael. Lancaster University; Reino Unido. The Faraday Institution; Reino Unido. Helmut-Schmidt University; Alemania  
dc.description.fil
Fil: Nagarathinam, Mangayarkarasi. Lancaster University; Reino Unido. The Faraday Institution; Reino Unido  
dc.description.fil
Fil: Gavilán Arriazu, Edgardo Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Departamento de Química Teórica y Computacional; Argentina  
dc.description.fil
Fil: Binjrajka, Anshika. Lancaster University; Reino Unido  
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Fil: Panda, Swoyam. Lancaster University; Reino Unido  
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Fil: Au, Heather. Imperial College London; Reino Unido  
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Fil: Crespo Ribadeneyra, Maria. Imperial College London; Reino Unido. Queen Mary University of London; Reino Unido  
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Fil: Titirici, Maria Magdalena. Imperial College London; Reino Unido  
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Fil: Leiva, Ezequiel Pedro M.. Universidad Nacional de Córdoba. Facultad de Cs.químicas. Departamento de Química Teórica y Computacional; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina  
dc.description.fil
Fil: Hoster, Harry Ernst. Lancaster University; Reino Unido. The Faraday Institution; Reino Unido. Universitat Essen; Alemania  
dc.journal.title
Journal of Materials Chemistry A  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2023/ta/d2ta09406a  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/D2TA09406A