Dual-Atom Support Boosts Nickel-Catalyzed Urea Electrooxidation |
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| Authors: | Dr Xiaobo Zheng Jiarui Yang Dr Peng Li Zhuoli Jiang Dr Peng Zhu Dr Qishun Wang Dr Jiabin Wu Dr Erhuan Zhang Prof Wenping Sun Prof Shixue Dou Prof Dingsheng Wang Prof Yadong Li |
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| Institution: | 1. Department of Chemistry, Tsinghua University, Beijing, 100084 China;2. School of Science, Royal Melbourne Institute of Technology, Melbourne, VIC 3000 Australia;3. School of Materials Science and Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou, 310027 China;4. Institute of Energy Materials Science, University of Shanghai for Science and Technology, Shanghai, 200093 China |
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| Abstract: | Nickel-based catalysts have been regarded as one of the most promising electrocatalysts for urea oxidation reaction (UOR), however, their activity is largely limited by the inevitable self-oxidation reaction of Ni species (NSOR) during the UOR. Here, we proposed an interface chemistry modulation strategy to trigger the occurrence of UOR before the NSOR via constructing a 2D/2D heterostructure that consists of ultrathin NiO anchored Ru−Co dual-atom support (Ru-Co DAS/NiO). Operando spectroscopic characterizations confirm this unique triggering mechanism on the surface of Ru-Co DAS/NiO. Consequently, the fabricated catalyst exhibits outstanding UOR activity with a low potential of 1.288 V at 10 mA cm−2 and remarkable long-term durability for more than 330 h operation. DFT calculations and spectroscopic characterizations demonstrate that the favorable electronic structure induced by this unique heterointerface endows the catalyst energetically more favorable for the UOR than the NSOR. |
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| Keywords: | 2D Heterostructure Dual-Atom Support Electronic Coupling Interface Chemistry Urea Oxidation Reaction |
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