INQUIMAE   12526
INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
artículos
Título:
Soluble TTF catalyst for the oxidation of cathode products in Li-Oxygen battery: A chemical scavenger
Autor/es:
WALTER RAMÓN TORRES; SANTIAGO ESTEBAN HERRERA; ALVARO YAMIL TESIO; MARÍA DEL POZO; ERNESTO JULIO CALVO
Revista:
ELECTROCHIMICA ACTA
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2015 vol. 182 p. 1118 - 1118
ISSN:
0013-4686
Resumen:
One of the challenges for the success of electric vehicles is to achieve a non aqueous Li-O2 battery efficientin the oxidation of solid Li2O2 during battery charging. Bruce et al. have proposed that solubletetrathiofulvalene (TTF) in the electrolyte, makes it possible to recharge the battery at high currentdensities and low over-potential. We disclose here a detailed study of Li2O2 and solvent degradationproducts oxidation on gold electrode in 0.1 M LiPF6 DMSO electrolyte with soluble TTF using a variety oftechniques: rotating ring disk electrode (RRDE), scanning electrochemical microscopy (SECM),electrochemical quartz crystal microbalance (EQCM) and atomic force microscopy (AFM). Theexperimental evidence demonstrates that it is possible recover a clean Au surface using TTF as asoluble catalyst that titrates the surface products formed during the O2 reduction