The effect of N precursors in Fe-N/C type catalysts based on activated silicon carbide derived carbon for oxygen reduction activity at various pH values

被引：19

作者：

Jaeger, R. ^{[1
]}

Kasatkin, P. E. ^{[1
]}

Haerk, E. ^{[2
]}

Teppor, P. ^{[1
]}

Romann, T. ^{[1
]}

Haermas, R. ^{[1
]}

Tallo, I. ^{[1
]}

Maeeorg, U. ^{[1
]}

Joost, U. ^{[3
]}

Paiste, P. ^{[4
]}

Kirsimaee, K. ^{[4
]}

Lust, E. ^{[1
]}

机构：

[1] Univ Tartu, Inst Chem, 14a Ravila Str, EE-50411 Tartu, Estonia

[2] Helmholtz Zentrum Berlin, Soft Matter & Funct Mat, Hahn Meitner Pl 1, D-14109 Berlin, Germany

[3] Univ Tartu, Inst Phys, 1 W Ostwaldi Str, EE-50411 Tartu, Estonia

[4] Univ Tartu, Inst Ecol & Earth Sci, 14a Ravila Str, EE-50411 Tartu, Estonia

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2018年 / 823卷

关键词：

Fe-N/C catalysts; Oxygen reduction reaction; Durability; Alkaline media; Acidic media; 1,3-di(1H-imidazol-1-yl)-2-propanol; NONPRECIOUS METAL-CATALYSTS; HYDROGEN EVOLUTION REACTION; METHANOL FUEL-CELL; TRANSITION-METALS; ELECTROCATALYSTS; PERFORMANCE; PLATINUM; SYSTEMS; SITES; CO;

D O I：

10.1016/j.jelechem.2018.06.040

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Simple and modified synthesis route for preparation of Fe-N/C type oxygen reduction reaction (ORR) catalysts has been worked out and discussed. The significant effect of the N precursor chemical composition on the ORR activity in 0.1 M KOH and 0.1 M HClO4 electrolyte solutions has been demonstrated. The half-wave potential values increased in the following order: C(SiC) < Fe + Urea/C < Fe + EDTA/C < Fe + DIPO/ C <= Fe + Phen/C <= Fe + Bipyr/C in both electrolyte solutions studied. Molar ratio of Fe:N precursor and Fe content change in the Fe + Bipyr/C catalyst was found to be negligible. Noticeable change in ORR activity has been observed after acid treatment step of Fe + Bipyr/C. The 150-h durability tests demonstrated that in terms of the activity/stability ratio the Fe + Phen/C is the best ORR catalyst.

引用

页码：593 / 600

页数：8

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