Re–Ni cathodes obtained by electrodeposition as a promising electrode material for hydrogen evolution reaction in alkaline solutions

Kuznetsov, V. V.; Gamburg, Yu. D.; Zhulikov, V. V.; Batalov, Roman S.; Филатова, Е. В.

doi:10.1016/j.electacta.2019.05.156

Cited by 16 publications

(7 citation statements)

References 30 publications

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“…Gamburg et al explored various alloy catalysts of CoMo, NiMo and ReNi by an electrodeposition method. 68,69 The experimental results indicate that the ReNi alloy displays the best activity and stability in alkaline electrolytes, which is regarded as a good candidate for HER catalysts. Then the effect of Re content on HER activity in the ReNi alloy was studied in detail.…”

Section: Re Alloysmentioning

confidence: 99%

Advanced progress of rhenium (Re)-based electrode materials in electrocatalytic hydrogen evolution: a review

et al. 2023

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Section: Re Alloysmentioning

confidence: 99%

Advanced progress of rhenium (Re)-based electrode materials in electrocatalytic hydrogen evolution: a review

et al. 2023

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“…In order to further clarify the influences of reduction temperatures on an ammonium perrhenate hydrogen reduction, X-ray photoelectron spectroscopy was used for the rhenium atomic quantitative analysis in different valence states. According to the references [30][31][32], a rhenium atom has a split energy level (f), where the spin-orbit splitting was 2.4 eV, and the spin orbital split intensity ratio of Re 4f 7/2 and Re 4f 5/2 was 4:3. The background was a mixed Shirley background (Shirley + straight line) [33], and the slope of the line was eight.…”

Section: Reduction Mechanism Analysismentioning

confidence: 99%

Reaction Mechanism and Process Control of Hydrogen Reduction of Ammonium Perrhenate

Tang

Sun

Zhang

et al. 2020

Metals

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The preparation of rhenium powder by a hydrogen reduction of ammonium perrhenate is the only industrial production method. However, due to the uneven particle size distribution and large particle size of rhenium powder, it is difficult to prepare high-density rhenium ingot. Moreover, the existing process requires a secondary high-temperature reduction and the deoxidization process is complex and requires a high-temperature resistance of the equipment. Attempting to tackle the difficulties, this paper described a novel process to improve the particle size distribution uniformity and reduce the particle size of rhenium powder, aiming to produce a high-density rhenium ingot, and ammonium perrhenate is completely reduced by hydrogen at a low temperature. When the particle size of the rhenium powder was 19.74 µm, the density of the pressed rhenium ingot was 20.106 g/cm3, which was close to the theoretical density of rhenium. In addition, the hydrogen reduction mechanism of ammonium perrhenate was investigated in this paper. The results showed that the disproportionation of ReO3 decreased the rate of the reduction reaction, and the XRD and XPS patterns showed that the increase in the reduction temperature was conducive to increasing the reduction reaction rate and reducing the influence of disproportionation on the reduction process. At the same reduction temperature, reducing the particle sizes of ammonium perrhenate was conducive to increasing the hydrogen reduction rate and reducing the influence of the disproportionation.

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“…Posteriorly, in sweeps in the anodic direction these deposited materials formed oxides of high oxidation state, such as Re(VI) or Re(VII) oxides. Rhenium metal is electrodeposited at potentials more negative than 0 V (9)(10)12,15,20,22,(26)(27). However, it is widely accepted that the surface contains Re(0) and oxides of the metal with high oxidation states (22,30).…”

Section: Introductionmentioning

confidence: 99%

“…Rhenium metal is electrodeposited at potentials more negative than 0 V (9)(10)12,15,20,22,(26)(27). However, it is widely accepted that the surface contains Re(0) and oxides of the metal with high oxidation states (22,30). Moreover, the electrodeposition process is strongly dependent on the experimental conditions, and especially the acid concentration influences the nature of the electrodeposited materials (30).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Study of Metallic Rhenium in Methanol Acidic Aqueous Solutions

Orozco¹,

Rivera²

2022

ECS Trans.

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Cyclic voltammograms were performed in a window potential from -0.4 to 1.6 V, in solutions of a) H2SO4 0.5M, b) CH3OH 2 M + 0.5 M, c) HCl 0.145 M, d) CH3OH 2 M + HCl 0.145 M. In the sweeps towards anodic direction a soluble oxide is formed at potential superior to 1 V, which is electrodeposited in the sweeps towards cathodic direction. The electrodeposited surface is formed by Re(I) and Re(0) and anodic peaks (0.47 V and 0.71 V vs SHE) correspond to the formation of higher oxidation states (Re(I)→Re(II)→Re(VI)). Methanol affects the structure of anodic peaks separately of the presence of ions chlorides or sulfates. In both acids the soluble oxide is formed and also this specie is produced in sulfuric acid solutions with methanol. Contrariwise, in hydrochloric acid solutions with methanol the perrhenate is the predominant specie. We suggest new hydrogen bonding structures in this solution. Furthermore, we propose a new bonding structure when methanol is dissolve in sulfuric acid or hydrochloric acid solutions. This specie produces bands at 317 nm or 321 nm in the UV-visible spectra of soluble oxide. The high corrosion of metallic rhenium impedes its use as an anode for methanol electrooxidation

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Re–Ni cathodes obtained by electrodeposition as a promising electrode material for hydrogen evolution reaction in alkaline solutions

Cited by 16 publications

References 30 publications

Advanced progress of rhenium (Re)-based electrode materials in electrocatalytic hydrogen evolution: a review

Advanced progress of rhenium (Re)-based electrode materials in electrocatalytic hydrogen evolution: a review

Reaction Mechanism and Process Control of Hydrogen Reduction of Ammonium Perrhenate

Electrochemical Study of Metallic Rhenium in Methanol Acidic Aqueous Solutions

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