[1]University of Queensland, Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering,Brisbane,Australia
[2]Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials,Tianjin,China
[3]Nankai University, Key Laboratory of Advanced Energy Materials Chemistry,Tianjin,China
[4]China-Japan Union Hospital, Department of Neurology,Changchun,China
[5]University of Wollongong, Innovation Campus,Wollongong,Australia
[6]Nankai University, College of Chemistry,Tianjin,China
We report herein that the particle size of Li2O2, which is the discharged product of a Li-O2 battery, remarkably influences the charging performance. As the particle size decreases, the average voltage of charge plateaus is lowered due to reduced electrode polarization and enhanced kinetics of the oxidation reaction of Li2O2. ? 2014 The Royal Society of Chemistry.