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Facile one-step synthesis of Ru doped NiCoP nanoparticles as highly efficient electrocatalysts for oxygen evolution reaction |
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| Authors: | Dr. Jun Kim Byeong Jo Min Dr. Taehyun Kwon Dr. Taekyung Kim Ho Chang Song Prof. Hyung Chul Ham Dr. Hionsuck Baik Prof. Kwangyeol Lee Dr. Jin Young Kim |
| Affiliation: | 1. Hydrogen⋅Fuel Cell Research Center, Korea Institute for Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea;2. Hydrogen⋅Fuel Cell Research Center, Korea Institute for Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea Division of Energy-Environment Engineering, KIST School, University of Science and Technology (UST), 217, Gajeong-ro, Yuseong-gu, Daejeon, 34113 Republic of Korea These authors contributed equally.;3. Department of Chemistry and Research Institute for Natural Sciences, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul, 02841 Republic of Korea;4. Department of Chemical Engineering, Inha University, Inha-ro 100, Michuhol-gu, Incheon, 22212 Republic of Korea;5. Korea Basic Science Institute, 145, Anam-ro, Seongbuk-gu, Seoul, 02841 Republic of Korea |
| Abstract: | Transition metal phosphides (TMPs) as ever-evolving electrocatalytic materials have attracted increasing attention in water splitting reactions owing to their cost-effective, highly active and stable catalytic properties. This work presents a facile synthetic route to NiCoP nanoparticles with Ru dopants which function as highly efficient electrocatalysts for oxygen evolution reaction (OER) in alkaline media. The Ru dopants induced a high content of Ni and Co vacancies in NiCoP nanoparticles, and the more defective Ru doped NiCoP phase than undoped NiCoP ones led to a greater number of catalytically active sites and improved electrical conductivity after undergoing electrochemical activation. The Ru doped NiCoP catalyst exhibited high OER catalytic performance in alkaline media with a low overpotential of 281 mV at 10 mA cm−2 and a Tafel slope of 42.7 mV dec−1. |
| Keywords: | Ru doping phosphide pre-catalyst oxygen evolution reaction cation vacancy |