Investigation on the Catalytic Performance of Reduced‐Graphene‐Oxide‐Interpolated FeS2 and FeS for Oxygen Reduction Reaction

Authors

Hengyi Fang, University of Jinan
Taizhong Huang, University of Jinan
Jianfeng Mao, University of WollongongFollow
Shuo Yao, University of Jinan
M Dinesh, University of Jinan
Yue Sun, University of Jinan
Dong Liang, University of Jinan
Lei Qi, University of Jinan
Jiemei Yu, University of Jinan
Zhankun Jiang, University of Jinan

RIS ID

130845

Publication Details

Fang, H., Huang, T., Mao, J., Yao, S., Dinesh, M. Mayilvel., Sun, Y., Liang, D., Qi, L., Yu, J. & Jiang, Z. (2018). Investigation on the Catalytic Performance of Reduced‐Graphene‐Oxide‐Interpolated FeS2 and FeS for Oxygen Reduction Reaction. ChemistrySelect, 3 (37), 10418-10427.

Abstract

The oxygen reduction reaction (ORR) plays a key role in many kinds of energy conversion and energy storage devices, especially in fuel cells. Developing low-cost, easily prepared, and high-efficiency catalysts is a crucial factor for the large-scale applications of fuel cells. Herein, we report the reduced graphene oxide (rGO) interpolated FeS2and FeS as low cost and high performance electrocatalyst for ORR in the alkaline electrolyte. Cyclic voltammetry tests indicate that the onset potential of the ORR for FeS2@rGO is −0.142 V, which is close to the state-of-the-art commercial Pt/C (-0.114 V) catalyst. A low Tafel slope of ∼ 98 mV/decade and high durability are also observed for the FeS2@rGO composite for ORR. The reaction kinetics study shows that the rGO-interpolated FeS2catalyzed ORR major happen through 4-electron pathway, but the rGO-interpolated FeS catalyzed ORR major happen through mixed 2-electron and 4-electron pathway. The S−S bond of FeS2play the major role for the happening of ORR through 4-electron pathway.