Jump to main content
Jump to site search

Issue 7, 2015

Porous perovskite calcium–manganese oxide microspheres as an efficient catalyst for rechargeable sodium–oxygen batteries

Author affiliations

Abstract

We report herein the preparation of porous CaMnO3 microspheres and their electrochemical catalytic performance as a cathode for rechargeable sodium–oxygen (Na–O2) batteries. In ether-based electrolytes, the CaMnO3/C cathode exhibits a high discharge capacity of 9560 mA h g−1 at a current density of 100 mA g−1, high rate capability (a capacity of 1940 mA h g−1 at 1000 mA g−1), and considerable cyclability up to 80 cycles. Two discharged species of NaO2 and Na2O2 are detected at the discharged state. The remarkable electrocatalytic activity of CaMnO3 both for the oxygen reduction reaction (ORR) and for the oxygen evolution reaction (OER) is attributed to the porous micro–nanostructures in stable ether-based electrolytes.

Graphical abstract: Porous perovskite calcium–manganese oxide microspheres as an efficient catalyst for rechargeable sodium–oxygen batteries

Supplementary files

Article information


Submitted
19 Nov 2014
Accepted
18 Dec 2014
First published
18 Dec 2014

J. Mater. Chem. A, 2015,3, 3320-3324
Article type
Paper
Author version available

Porous perovskite calcium–manganese oxide microspheres as an efficient catalyst for rechargeable sodium–oxygen batteries

Y. Hu, X. Han, Q. Zhao, J. Du, F. Cheng and J. Chen, J. Mater. Chem. A, 2015, 3, 3320 DOI: 10.1039/C4TA06287F

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

Search articles by author

Spotlight

Advertisements