EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte

The oxygen reduction reaction (ORR) in DMSO containing LiPF6 has been studied with the electrochemical quartz crystal microbalance (EQCM) during galvanostatic cathodic and anodic pulses, chronoamperometry and cyclic voltammetry experiments. We disclose here for the first time gravimetric evidence wi...

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Detalles Bibliográficos
Autor principal:	Calvo, Ernesto Julio
Publicado:	2016
Materias:	Battery DMSO EQCM Lithium Oxygen Chronoamperometry Cyclic voltammetry Electrolytes Electrolytic reduction Quartz crystal microbalances Electrochemical quartz crystal microbalance High current densities Low current density Mechanistic models Oxygen reduction reaction Deposition
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v765_n_p45_Torres http://hdl.handle.net/20.500.12110/paper_15726657_v765_n_p45_Torres
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_15726657_v765_n_p45_Torres
record_format	dspace
spelling	paper:paper_15726657_v765_n_p45_Torres2025-07-30T19:00:26Z EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte Calvo, Ernesto Julio Battery DMSO EQCM Lithium Oxygen Chronoamperometry Cyclic voltammetry Electrolytes Electrolytic reduction Lithium Oxygen Quartz crystal microbalances Battery DMSO Electrochemical quartz crystal microbalance EQCM High current densities Low current density Mechanistic models Oxygen reduction reaction Deposition The oxygen reduction reaction (ORR) in DMSO containing LiPF6 has been studied with the electrochemical quartz crystal microbalance (EQCM) during galvanostatic cathodic and anodic pulses, chronoamperometry and cyclic voltammetry experiments. We disclose here for the first time gravimetric evidence with the EQCM of the different mechanistic models that apply to the ORR in LiPF6/DMSO electrolyte: (i) Surface electrochemical/chemical deposition of Li2O2(s) and (ii) solution phase disproportion of LiO2(soln) yields large Li2O2 particles. The mass per electron detected with the EQCM depends on the respective current rates and thus on the mechanisms, i.e. 23 g/F for the formation of Li2O2 thin film at high current density and much larger values for low current density due to solvent co-deposition and further degradation. © 2015 Elsevier B.V. All rights reserved. Fil:Calvo, E.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v765_n_p45_Torres http://hdl.handle.net/20.500.12110/paper_15726657_v765_n_p45_Torres
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Battery DMSO EQCM Lithium Oxygen Chronoamperometry Cyclic voltammetry Electrolytes Electrolytic reduction Lithium Oxygen Quartz crystal microbalances Battery DMSO Electrochemical quartz crystal microbalance EQCM High current densities Low current density Mechanistic models Oxygen reduction reaction Deposition
spellingShingle	Battery DMSO EQCM Lithium Oxygen Chronoamperometry Cyclic voltammetry Electrolytes Electrolytic reduction Lithium Oxygen Quartz crystal microbalances Battery DMSO Electrochemical quartz crystal microbalance EQCM High current densities Low current density Mechanistic models Oxygen reduction reaction Deposition Calvo, Ernesto Julio EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte
topic_facet	Battery DMSO EQCM Lithium Oxygen Chronoamperometry Cyclic voltammetry Electrolytes Electrolytic reduction Lithium Oxygen Quartz crystal microbalances Battery DMSO Electrochemical quartz crystal microbalance EQCM High current densities Low current density Mechanistic models Oxygen reduction reaction Deposition
description	The oxygen reduction reaction (ORR) in DMSO containing LiPF6 has been studied with the electrochemical quartz crystal microbalance (EQCM) during galvanostatic cathodic and anodic pulses, chronoamperometry and cyclic voltammetry experiments. We disclose here for the first time gravimetric evidence with the EQCM of the different mechanistic models that apply to the ORR in LiPF6/DMSO electrolyte: (i) Surface electrochemical/chemical deposition of Li2O2(s) and (ii) solution phase disproportion of LiO2(soln) yields large Li2O2 particles. The mass per electron detected with the EQCM depends on the respective current rates and thus on the mechanisms, i.e. 23 g/F for the formation of Li2O2 thin film at high current density and much larger values for low current density due to solvent co-deposition and further degradation. © 2015 Elsevier B.V. All rights reserved.
author	Calvo, Ernesto Julio
author_facet	Calvo, Ernesto Julio
author_sort	Calvo, Ernesto Julio
title	EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte
title_short	EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte
title_full	EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte
title_fullStr	EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte
title_full_unstemmed	EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte
title_sort	eqcm study of oxygen cathodes in dmso lipf6 electrolyte
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15726657_v765_n_p45_Torres http://hdl.handle.net/20.500.12110/paper_15726657_v765_n_p45_Torres
work_keys_str_mv	AT calvoernestojulio eqcmstudyofoxygencathodesindmsolipf6electrolyte
_version_	1840322919102676992

EQCM study of oxygen cathodes in DMSO LiPF6 electrolyte

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