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Abstract:

The LiMn2O4-Polypyrrole electrochemical cell has been shown to extract LiCl from natural brine at low voltage with high selectivity, low energy consumption (5–10 Wh·mol− 1) and good stability. The intercalation/de-intercalation of Li+ ions in LixMn2O4 (0 ≤ x ≤ 1) has been studied by electrochemical impedance spectroscopy (EIS) at different potentials and lithium ion concentrations using a modified Randles equivalent electrical circuit for the interface of LixMn2O4 in natural brine from Salar de Olaroz (Jujuy, Argentina). The RCT exhibits two minima at potentials which correspond to x = 0.25 and x = 0.75 (half filled adsorption sites) respectively and a linear lithium ion concentration dependence of (Li+)− 0.5 consistent with a lithium ion transfer adsorption model proposed by Bruce. © 2017 Elsevier B.V.

Registro:

Documento: Artículo
Título:Electrochemical impedance spectroscopy study of the LixMn2O4 interface with natural brine
Autor:Marchini, F.; Williams, F.J.; Calvo, E.J.
Filiación:INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, Buenos Aires, AR-1428, Argentina
Palabras clave:Brine; Extraction; Impedance; LiMn2O4; Lithium; Brines; Chlorine compounds; Electric impedance; Electrochemical impedance spectroscopy; Energy utilization; Extraction; Ions; Lithium; Manganese compounds; Polypyrroles; Spectroscopy; Adsorption model; Adsorption site; Equivalent electrical circuits; Good stability; High selectivity; LiMn2O4; Lithium-ion transfer; Low energy consumption; Lithium compounds
Año:2018
Volumen:819
Página de inicio:428
Página de fin:434
DOI: http://dx.doi.org/10.1016/j.jelechem.2017.11.071
Título revista:Journal of Electroanalytical Chemistry
ISSN:15726657
CODEN:JECHE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v819_n_p428_Marchini

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Citas:

---------- APA ----------
Marchini, F., Williams, F.J. & Calvo, E.J. (2018) . Electrochemical impedance spectroscopy study of the LixMn2O4 interface with natural brine. Journal of Electroanalytical Chemistry, 819, 428-434.
http://dx.doi.org/10.1016/j.jelechem.2017.11.071
---------- CHICAGO ----------
Marchini, F., Williams, F.J., Calvo, E.J. "Electrochemical impedance spectroscopy study of the LixMn2O4 interface with natural brine" . Journal of Electroanalytical Chemistry 819 (2018) : 428-434.
http://dx.doi.org/10.1016/j.jelechem.2017.11.071
---------- MLA ----------
Marchini, F., Williams, F.J., Calvo, E.J. "Electrochemical impedance spectroscopy study of the LixMn2O4 interface with natural brine" . Journal of Electroanalytical Chemistry, vol. 819, 2018, pp. 428-434.
http://dx.doi.org/10.1016/j.jelechem.2017.11.071
---------- VANCOUVER ----------
Marchini, F., Williams, F.J., Calvo, E.J. Electrochemical impedance spectroscopy study of the LixMn2O4 interface with natural brine. 2018;819:428-434.
http://dx.doi.org/10.1016/j.jelechem.2017.11.071