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- W3204653418 abstract "Abstract Rhenium (Re) metal has been well known for the high corrosion resistance in strong acid and alkaline electrolyte, which makes it a potential electrocatalyst toward hydrogen evolution reaction (HER). However, the low HER activity (>100 mV @ 10 mA/cm 2 ) is a fatal flaw and the reason Re metal does not receive much attention comparing to other noble metal such as Platinum (Pt), Iridium (Ir) and Ruthenium (Ru). To improve the HER activity of Re metal, in this work, we have incorporated a small amount of Zr atoms into Re lattice to form Re based intermetallic Zr 5 Re 24 . The large Zr atoms can expand the subunits of the structure and increase the Re−Re bond lengths while the low electronegativity of Zr atoms will donate electrons to Re atoms and fill more antibonding state of Re−Re bond. Both crystal‐structural and electronic‐structural factors will reduce the bond strength of Re−Re bond and thus weaken the corresponding hydrogen adsorption energy (ΔGH ad ). This can adjust the ΔGH ad of Zr 5 Re 24 to an optimal position and enhance the HER activity from Re metal ( η 10 ∼125 mV) to Zr 5 Re 24 ( η 10 ∼90 mV). Moreover, it was realized that OH molecule on the surface of Zr 5 Re 24 and Re metal will not occupy the most active site (i. e. poison effect) nor significantly influence the ΔGH ad to the optimized position (i. e. 0 eV), which well elucidate the similar HER activity in acid or alkaline electrolyte." @default.
- W3204653418 created "2021-10-11" @default.
- W3204653418 creator A5001470354 @default.
- W3204653418 creator A5056795848 @default.
- W3204653418 date "2021-09-29" @default.
- W3204653418 modified "2023-10-17" @default.
- W3204653418 title "Electrocatalytic Hydrogen Evolution Reaction of Rhenium Metal and Rhenium‐Based Intermetallic in Acid and Alkaline Media" @default.
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- W3204653418 doi "https://doi.org/10.1002/ejic.202100666" @default.
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