The anion effect on the oxygen reduction of MnX (X = O, S, and Se) catalysts

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Title:	The anion effect on the oxygen reduction of MnX (X = O, S, and Se) catalysts
Authors:	鄭芳怡;Liu, Xue;Du, Jing;Li, Chun;Han, Xiaopeng;Hu, Xiaofei;Cheng, Fangyi;Chen, Jun
Contributors:	地球科學學院大氣科學學系
Date:	2015-02-21
Issue Date:	2026-04-21 14:04:22 (UTC+8)
Publisher:	Royal Society of Chemistry
Abstract:	摘要： In this study, a series of Mn-based compounds, MnX (X = O, S, and Se), were prepared and investigated as electrocatalysts for the oxygen reduction reaction (ORR). These compounds adopt the same rock-salt-type crystal structure and present a similar morphology and close particle size. Among them, the unreported MnSe catalyst exhibits the best performance towards the ORR, in terms of onset potential, kinetic current density, and four-electron selectivity, as demonstrated by cyclic voltammetry (CV) and polarization measurements. The different activities of MnX can be ascribed to the anion, which can assist in the change of the Mn valance state. Besides, the methanol tolerance and stability of MnSe are comparable to those of commercial Pt/C. Our results would enlighten the rational design of transition metal-based ORR catalytic materials by taking advantages of the anion effect. In this study, a series of Mn-based compounds, MnX (X = O, S, and Se), were prepared and investigated as electrocatalysts for the oxygen reduction reaction (ORR). 出版日期： 2015-02-03 資源來源： Royal Society of Chemistry 識別號： ISSN: 2050-7488 識別號： EISSN: 2050-7496 識別號： DOI: 10.1039/c4ta05995f
Appears in Collections:	[Department of Atmospheric Sciences] journal & Dissertation

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