Issue 4, 2014

Ultra-low overpotential and high rate capability in Li–O2 batteries through surface atom arrangement of PdCu nanocatalysts

Abstract

PdCu bimetallic nanoparticles (NPs) having mixed disordered face-centered cubic (fcc) and ordered body-centered cubic (B2-type) phases enhance the kinetics of oxygen reduction/evolution reaction by significant reduction of overpotentials, which leads to the superb round-trip efficiency of ∼80%. In addition, the PdCu catalyst demonstrates a remarkable cyclic enhancement in stability and an outstanding rate capability even at a high current density of 5000 mA gcarbon−1. Our first-principles calculations demonstrate that the low overpotentials of the PdCu catalyst are strongly correlated with the weak LiO2 adsorption strength, caused by electron transfer from Cu to the top-layer Pd atoms on the surface.

Graphical abstract: Ultra-low overpotential and high rate capability in Li–O2 batteries through surface atom arrangement of PdCu nanocatalysts

Supplementary files

Article information

Article type
Communication
Submitted
16 Oct 2013
Accepted
09 Jan 2014
First published
09 Jan 2014

Energy Environ. Sci., 2014,7, 1362-1368

Ultra-low overpotential and high rate capability in Li–O2 batteries through surface atom arrangement of PdCu nanocatalysts

R. Choi, J. Jung, G. Kim, K. Song, Y. Kim, S. C. Jung, Y. Han, H. Song and Y. Kang, Energy Environ. Sci., 2014, 7, 1362 DOI: 10.1039/C3EE43437K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements