Related Experiment Video
Updated: Apr 26, 2026

Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery
Published on: July 12, 2016
The mechanisms of oxygen reduction and evolution reactions in nonaqueous lithium-oxygen batteries
Ruiguo Cao1, Eric D Walter, Wu Xu
1Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA 99354 (USA).
Abstract:
A fundamental understanding of the mechanisms of both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) in nonaqueous lithium-oxygen (Li-O2) batteries is essential for the further development of these batteries. In this work, we systematically investigate the mechanisms of the ORR/OER reactions in nonaqueous Li-O2 batteries by using electron paramagnetic resonance (EPR) spectroscopy, using 5,5-dimethyl-pyrroline N-oxide as a spin trap. The study provides direct verification of the formation of the superoxide radical anion (O2(˙-)) as an intermediate in the ORR during the discharge process, while no O2(˙-) was detected in the OER during the charge process. These findings provide insight into, and an understanding of, the fundamental reaction mechanisms involving oxygen and guide the further development of this field.
More Related Videos
11:25Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway
Published on: March 7, 2022
07:55Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
Published on: April 17, 2018
Related Concept Videos
Oxidation-Reduction Reactions
Balancing Redox Equations
Redox Equilibria: Overview
Redox Reactions
Redox Reactions
Oxidation and Reduction of Organic Molecules
The removal of an electron from a molecule, results in a...