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Article Abstract
The dinuclear Ru diazadiene olefin complex, [Ru(OTf)(μ-H)(Medad)(dbcot)], is an active catalyst for hydrogen evolution in a Polymer Exchange Membrane (PEM) water electrolyser. When supported on high surface area carbon black and at 80 °C, [Ru(OTf)(μ-H)(Medad)(dbcot)]@C evolves hydrogen at the cathode of a PEM electrolysis cell (400 mA cm, 1.9 V). A remarkable turn over frequency (TOF) of 7800 mol mol h is maintained over 7 days of operation. A series of model reactions in homogeneous media and in electrochemical half cells, combined with DFT calculations, are used to rationalize the hydrogen evolution mechanism promoted by [Ru(OTf)(μ-H)(Medad)(dbcot)].
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| http://dx.doi.org/10.1039/d1sc07234j | DOI Listing |
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