In:
Angewandte Chemie, Wiley, Vol. 129, No. 47 ( 2017-11-20), p. 15173-15177
Abstract:
A mesoporous MnCo 2 O 4 electrode material is made for bifunctional oxygen electrocatalysis. The MnCo 2 O 4 exhibits both Co 3 O 4 ‐like activity for oxygen evolution reaction (OER) and Mn 2 O 3 ‐like performance for oxygen reduction reaction (ORR). The potential difference between the ORR and OER of MnCo 2 O 4 is as low as 0.83 V. By XANES and XPS investigation, the notable activity results from the preferred Mn IV ‐ and Co II ‐rich surface. The electrode material can be obtained on large‐scale with the precise chemical control of the components at relatively low temperature. The surface state engineering may open a new avenue to optimize the electrocatalysis performance of electrode materials. The prominent bifunctional activity shows that MnCo 2 O 4 could be used in metal–air batteries and/or other energy devices.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v129.47
DOI:
10.1002/ange.201708765
Language:
English
Publisher:
Wiley
Publication Date:
2017
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