Logo image
Electrochemical Characterization of SEI-Type Passivating Films Using Redox Shuttles
Journal article   Open access   Peer reviewed

Electrochemical Characterization of SEI-Type Passivating Films Using Redox Shuttles

Maureen Tang and John Newman
Journal of the Electrochemical Society, v 158(5), pp A530-A536
01 Jan 2011
url
https://doi.org/10.1149/1.3567765View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze) Open

Abstract

Electrochemistry Materials Science Materials Science, Coatings & Films Physical Sciences Science & Technology Technology
Although redox shuttles have been demonstrated to provide overcharge protection for up to 200 cycles, the existence of the solid-electrolyte-interphase (SEI), a passivating film on the negative electrode, seems to be inherently incompatible with a successful shuttle reaction. In this work, the kinetics of ferrocene is measured in the presence and absence of passivating films using rotating-disk-electrode voltammetry. The steady-state current-voltage curve is described by a simple model of Butler-Volmer kinetics and a through-film limiting current. The presence of a passivating film decreases both the limiting current and the effective rate constant. Both parameters decrease with increased passivation time; a decreasing porosity is a possible explanation for the latter observation. The characterization method developed in this work allows direct measurements of the effect of passivating films, thus contributing to understanding of passivation phenomena in nonaqueous electrolytes. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3567765] All rights reserved.

Metrics

9 Record Views
64 citations in Scopus

Details

UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#11 Sustainable Cities and Communities

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Collaboration types
Domestic collaboration
Web of Science research areas
Electrochemistry
Materials Science, Coatings & Films
Logo image