Jump to main content
Jump to site search

Issue 7, 2015
Previous Article Next Article

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

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Nov 2014, accepted on 18 Dec 2014 and first published on 18 Dec 2014


Article type: Paper
DOI: 10.1039/C4TA06287F
Author version
available:
Download author version (PDF)
J. Mater. Chem. A, 2015,3, 3320-3324

  •   Request permissions

    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

Search articles by author

Spotlight

Advertisements