The origin of Li-O2 battery performance enhancement using fluorocarbon additive

Olivia Wijaya; Ali Rinaldi; Reza Younesi; Rachid Yazami

doi:10.1149/2.0671613jes

The origin of Li-O₂ battery performance enhancement using fluorocarbon additive

Olivia Wijaya, Ali Rinaldi, Reza Younesi, Rachid Yazami

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Perfluorocarbon compounds (PFC) are known for their high O₂ dissolution capability and have been investigated as additives/electrolyte solvents to improve Li-O₂ batteries performance. Nevertheless, systematic studies that go beyond the proof of concept that fluorocarbon additives enhance the performance of Li-O₂ batteries have not been carried out yet. In this work, we investigate 1-methoxyheptafluoropropane additive (1-PFC), a fluorocarbon with an ether functional group that has been considered as one of the candidates as additives in the Li-O₂ battery. Using electrochemical methods and physical characterization of discharge products, we found that the enhancement of the discharge capacity of Li-O₂ cells with 1-PFC additive is most likely correlated with instability of the 1-PFC additive against superoxide radicals, rather than the improvement in O₂ solubility.

Original language	English
Pages (from-to)	A2660-A2664
Journal	Journal of the Electrochemical Society
Volume	163
Issue number	13
DOIs	https://doi.org/10.1149/2.0671613jes
State	Published - 2016

Bibliographical note

Publisher Copyright:
© 2016 The Electrochemical Society. All rights reserved.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Condensed Matter Physics
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1149/2.0671613jes

Cite this

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abstract = "Perfluorocarbon compounds (PFC) are known for their high O2 dissolution capability and have been investigated as additives/electrolyte solvents to improve Li-O2 batteries performance. Nevertheless, systematic studies that go beyond the proof of concept that fluorocarbon additives enhance the performance of Li-O2 batteries have not been carried out yet. In this work, we investigate 1-methoxyheptafluoropropane additive (1-PFC), a fluorocarbon with an ether functional group that has been considered as one of the candidates as additives in the Li-O2 battery. Using electrochemical methods and physical characterization of discharge products, we found that the enhancement of the discharge capacity of Li-O2 cells with 1-PFC additive is most likely correlated with instability of the 1-PFC additive against superoxide radicals, rather than the improvement in O2 solubility.",

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AU - Younesi, Reza

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AB - Perfluorocarbon compounds (PFC) are known for their high O2 dissolution capability and have been investigated as additives/electrolyte solvents to improve Li-O2 batteries performance. Nevertheless, systematic studies that go beyond the proof of concept that fluorocarbon additives enhance the performance of Li-O2 batteries have not been carried out yet. In this work, we investigate 1-methoxyheptafluoropropane additive (1-PFC), a fluorocarbon with an ether functional group that has been considered as one of the candidates as additives in the Li-O2 battery. Using electrochemical methods and physical characterization of discharge products, we found that the enhancement of the discharge capacity of Li-O2 cells with 1-PFC additive is most likely correlated with instability of the 1-PFC additive against superoxide radicals, rather than the improvement in O2 solubility.

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