Porous Mn2O3: A Low‐Cost Electrocatalyst for Oxygen Reduction Reaction in Alkaline Media with Comparable Activity to Pt/C. Issue 29 (21st June 2016)

• Record Type: Journal Article
• Authors: Wang, Wenhai; Geng, Jing; Kuai, Long; Li, Min; Geng, Baoyou
• Is Part Of: Chemistry. Volume 22:Issue 29(2016)
• Page Start: 9909
• Page End: 9913
• Publication Date: 2016-06-21
• Subjects: electrocatalysis -- fuel cells -- manganese -- oxygen reduction reaction -- porous materials; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201602078
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Preparing nonprecious metal catalysts with high activity in the oxygen reduction reaction (ORR) can promote the development of energy conversion devices. Support‐free porous Mn2 O3 was synthesized by a facile aerosol‐spray‐assisted approach (ASAA) and subsequent thermal treatment, and exhibited ORR activity that is comparable to commercial Pt/C The catalyst also exhibits notably higher activity than other Mn‐based oxides, such as Mn3 O4 and MnO2 . The rotating ring disk electrode (RRDE) study indicates a typical 4‐electron ORR pathway on Mn2 O3 . Furthermore, the porous Mn2 O3 demonstrates considerable stability and a good methanol tolerance in alkaline media. In light of the low cost and high earth abundance of Mn, the highly active Mn2 O3 is a promising candidate to be used as a cathode material in metal–air batteries and alkaline fuel cells. Abstract : Low cost, high value : An Mn2 O3 catalyst with porous structure exhibits comparably activity to commercial Pt/C and notably higher activity than other Mn‐based oxides, such as Mn3 O4 and MnO2 . In light of the low cost and high earth abundance of Mn, the highly active Mn2 O3 is a promising candidate to be used as a cathode material in metal–air batteries and alkaline fuel cells.