info:eu-repo/semantics/article
Sustainable selective extraction of lithium chloride from natural brine using a Li1-xMn2O4 ion pump
Fecha
2018-10Registro en:
Marchini, Florencia; Williams, Federico José; Calvo, Ernesto Julio; Sustainable selective extraction of lithium chloride from natural brine using a Li1-xMn2O4 ion pump; Electrochemical Society; Journal of the Electrochemical Society; 165; 14; 10-2018; A3292-A3298
0013-4651
CONICET Digital
CONICET
Autor
Marchini, Florencia
Williams, Federico José
Calvo, Ernesto Julio
Resumen
The spontaneous electrochemical extraction of lithium chloride from natural brine of high altitude salt flats in Northwest Argentina and recovery in a dilute electrolyte is demonstrated in two experiments: i) a highly selective LiMn2O4 insertion cathode and polypyrrole anion selective anode (salt capturing) and ii) an LiMn2O4 anode and lithium deficient Li1-xMn2O4 cathode separated by anion selective membrane (selective ion exchange). The entropy driven transfer of LiCl from concentrated brine to a dilute recovery electrolyte has been experimentally studied by ion pumping and the LiCl activity measured in natural brine.