One-step synthesis of atomic Ru doped ultra-thin Co(OH)2 nanosheets for oxygen evolution reaction in different pH values |
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Authors: | Yinhai Zhu Dong Cao Ning Liu Daojian Cheng |
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Affiliation: | State Key Laboratory of Organic-Inorganic Composites and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People''s Republic of China |
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Abstract: | Herein, atomic Ru doped ultra-thin Co(OH)2 nanosheet arrays are firstly synthesized by a one-step electrochemical deposition method. Importantly, the obtained electrocatalyst can display excellent activity for oxygen evolution reaction, which only needs 305 mV at 50 mA cm?2 in 1 M KOH and 261 mV at 10 mA cm?2 in 0.1 M KOH. Further mechanism studies disclose that the doping of Ru could reduce the thickness of nanosheets and contribute to the generation of active Co3+ sites by donating electrons from Co to Ru atoms via the Co–O–Ru bonds. This work paves a simple method to fabricate Co based nanosheet catalyst, which may be extended to the preparation of other highly active electrocatalysts. |
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Keywords: | Atomic Ru Electrochemical deposition method Oxygen evolution reaction Electronic structure |
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