Bimetallic Doped RuO<sub>2</sub> with Manganese and Iron as Electrocatalysts for Favorable Oxygen Evolution Reaction Performance

Published on 2020-03-26T02:43:19Z (GMT) by
Synthesizing oxygen evolution reaction (OER) catalysts with enhanced activity by codoping has been proven to be a feasible approach for the efficient use of noble metals via renewing their basic intrinsic properties. In continuation of the research in codoping, we prepare a ruthenium-based bimetallic doped catalyst Mn<i><sub>x</sub></i>Fe<i><sub>y</sub></i>Ru<sub>1–<i>x</i>–<i>y</i></sub>O<sub>2</sub> with an outstanding OER activity as compared to pure RuO<sub>2</sub>, one of the state-of-the-art OER catalysts. The synthesized codoped RuO<sub>2</sub> with a Mn/Fe molar ratio of 1 reflected a Tafel slope of only 41 mV dec<sup>–1</sup>, which is appreciably lower than 64 mV dec<sup>–1</sup> for pure RuO<sub>2</sub>. The X-ray photoelectron spectroscopy (XPS) performed reveals that oxygen vacancy and manganese valency are the key factors of the OER activity for codoped catalysts.

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Wu, Yiyi; Tariq, Muhammad; Zaman, Waqas Qamar; Sun, Wei; Zhou, Zhenhua; Yang, Ji (2020): Bimetallic Doped RuO2 with Manganese and

Iron as Electrocatalysts for Favorable Oxygen Evolution Reaction Performance. ACS Publications. Collection. https://doi.org/10.1021/acsomega.9b04237