New approaches to the lithiation kinetics in reaction-limited battery electrodes through electrochemical impedance spectroscopy
comunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
comunitat-uji-handle4:
INVESTIGACIONMetadatos
Título
New approaches to the lithiation kinetics in reaction-limited battery electrodes through electrochemical impedance spectroscopyFecha de publicación
2018ISSN
1359-7345; 1364-548XCita bibliográfica
VICENTE, Nuria; HARO, Marta; GARCIA-BELMONTE, Germà. New approaches to the lithiation kinetics in reaction-limited battery electrodes through electrochemical impedance spectroscopy. Chemical Communications, 2018, vol. 54, no 9, p. 1025-1040Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.rsc.org/en/content/articlehtml/2018/cc/c7cc08373dVersión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Electrochemical impedance spectroscopy is a widely employed technique probing kinetic limitations in the charging of battery electrodes. Hindrance mechanisms locate at the interfaces between the active material and ... [+]
Electrochemical impedance spectroscopy is a widely employed technique probing kinetic limitations in the charging of battery electrodes. Hindrance mechanisms locate at the interfaces between the active material and the electrolyte, and in the bulk of the reacting compound. Rate-limiting mechanisms are viewed as resistive circuit elements and can be extracted using standard impedance analyzers. Classical impedance models consider charge transport, mainly ion diffusion as slower carrier, as the principal kinetic limitation impeding full electrode charging. This is indeed the case for many technologically relevant battery compounds. In other instances, instead of being diffusion-limited, electrodes may undergo charging limitation caused by the kinetics of the reduction reaction itself. Specific impedance models for reaction-limited mechanisms are summarized here and proved for relevant electrode compounds, in particular for conversion or alloying electrodes in which Li+ intake produces a full rearrangement of the lattice structure with significant atomic displacement. [-]
Publicado en
Chemical Communications, 2018, vol. 54, no 9Proyecto de investigación
Generalitat Valenciana: PROMETEO/2014/020 Ministerio de Economia y Competitividad (MINECO) of Spain: MAT2016-76892-C3-1-R; Universitat Jaume I: PREDOC/2015/54, UJI-B2016-35Derechos de acceso
© The Royal Society of Chemistry
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info:eu-repo/semantics/openAccess
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