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Title: The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous Lithium-Oxygen Batteries

Abstract

The oxygen reduction/evolution reaction (ORR/OER) mechanisms in nonaqueous Li-O2 batteries have been investigated by using electron paramagnetic resonance spectroscopy in this work. We identified the superoxide radical anion (O2•-) as an intermediate in the ORR process using 5,5-dimethyl-pyrroline N-oxide as a spin trap, while no O2•- in OER was detected during the charge process. These findings provide insightful understanding on the fundamental oxygen reaction mechanisms in rechargeable nonaqueous Li-O2 batteries.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1163808
Report Number(s):
PNNL-SA-101742
48164; KC0208010
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: ChemSusChem, 7(9):2436-2440
Country of Publication:
United States
Language:
English
Subject:
ELECTRON SPIN RESONANCE; OXYGEN ENHANCEMENT RATIO; ENERGY STORAGE; Li-O2 battery; EPR; ORR; OER; energy storage; Environmental Molecular Sciences Laboratory

Citation Formats

Cao, Ruiguo, Walter, Eric D., Xu, Wu, Nasybulin, Eduard N., Bhattacharya, Priyanka, Bowden, Mark E., Engelhard, Mark H., and Zhang, Jiguang. The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous Lithium-Oxygen Batteries. United States: N. p., 2014. Web. doi:10.1002/cssc.201402315.
Cao, Ruiguo, Walter, Eric D., Xu, Wu, Nasybulin, Eduard N., Bhattacharya, Priyanka, Bowden, Mark E., Engelhard, Mark H., & Zhang, Jiguang. The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous Lithium-Oxygen Batteries. United States. doi:10.1002/cssc.201402315.
Cao, Ruiguo, Walter, Eric D., Xu, Wu, Nasybulin, Eduard N., Bhattacharya, Priyanka, Bowden, Mark E., Engelhard, Mark H., and Zhang, Jiguang. Mon . "The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous Lithium-Oxygen Batteries". United States. doi:10.1002/cssc.201402315.
@article{osti_1163808,
title = {The Mechanisms of Oxygen Reduction and Evolution Reactions in Nonaqueous Lithium-Oxygen Batteries},
author = {Cao, Ruiguo and Walter, Eric D. and Xu, Wu and Nasybulin, Eduard N. and Bhattacharya, Priyanka and Bowden, Mark E. and Engelhard, Mark H. and Zhang, Jiguang},
abstractNote = {The oxygen reduction/evolution reaction (ORR/OER) mechanisms in nonaqueous Li-O2 batteries have been investigated by using electron paramagnetic resonance spectroscopy in this work. We identified the superoxide radical anion (O2•-) as an intermediate in the ORR process using 5,5-dimethyl-pyrroline N-oxide as a spin trap, while no O2•- in OER was detected during the charge process. These findings provide insightful understanding on the fundamental oxygen reaction mechanisms in rechargeable nonaqueous Li-O2 batteries.},
doi = {10.1002/cssc.201402315},
journal = {ChemSusChem, 7(9):2436-2440},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}