Enhancing the hydrogen evolution reaction with Ni-W-TiO2 composites

Zhang, Yujia; Bilan, Hubert K.; Podlaha, E. J.

doi:10.1016/j.elecom.2018.10.015

Cited by 12 publications

(10 citation statements)

References 27 publications

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“…From a practical point of view, the electrodeposition of Ni-W-Mo alloy coatings reinforced with TiO 2 nanoparticles can be a good strategy to combine corrosion resistant coatings with electrocatalysis, for applications such as water splitting, since it has been recently recognized that the addition of TiO 2 can also improve the hydrogen evolution reaction in basic electrolytes in Mo-alloys ( Zhang, et al, 2018 ; Wang et al, 2019 , Wang et al, 2020 ). The addition of TiO 2 also is beneficial to reduce the extent of cracks and to provide improved roughness to the surface, important to surface finishing applications.…”

Section: Discussionmentioning

confidence: 99%

“…Enhanced electrocatalysis of the hydrogen evolution reaction (HER) in water splitting application has been reported for Ni-W-TiO 2 composite in comparison to Ni-W due to a rougher surface that was created by the addition of the TiO 2 particle ( Zou, et al, 2004 ), associated with a change in the morphology. Zhang et al (2018) have reported an intrinsic enhancement of HER kinetics for Ni-W-TiO 2 nanocomposite coatings compared to the nanoparticle-free counterparts. Few studies address the influence of the particle on the alloy composition that can have a large impact of the deposit composition.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Titania Nanoparticles on the Electrodeposition of Ni-Mo-W Composites in Aqueous Electrolytes at Different Electrolyte Temperatures

Izagirre‐Etxeberria

Podlaha

2022

Front. Chem.

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The electrodeposition of Ni-Mo-W alloys and composites with TiO2 are examined with a rotating Hull cell to better understand the influence of the particle on the deposition composition and morphology. The addition of the TiO2 particle to the electrolyte and deposit, significantly affected the deposit composition when the electrolyte temperature was 650C. Both Ni and Mo composition in the deposit was enhanced, but not due to higher reaction rates. The enhancement was a result of an apparent inhibition by the hydrogen evolving side reaction. The W partial current density was most significantly inhibited. The deposit morphology changed with the addition of TiO2 with a reduction of microcracks compared to the particle-free deposit. The results suggest that the adsorption of the hydrogen intermediate from the side reaction is influenced by the particle, hindering hydrogen desorption, and indirectly affects the partial current densities of the nickel, molybdate and tungstate ion reduction and the morphology.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of Titania Nanoparticles on the Electrodeposition of Ni-Mo-W Composites in Aqueous Electrolytes at Different Electrolyte Temperatures

Izagirre‐Etxeberria

Podlaha

2022

Front. Chem.

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“…To the best of authors' knowledge, Nb-doped TiO2 and TNTs have not yet been reported to be used as Pt supports for the HER. There are, however, a number of recent papers dealing with the use of Ptfree catalysts supported on TiO2 for the HER in both, acidic [41][42][43][44][45][46][47][48][49] and alkaline [49][50][51][52][53] electrolytes. Different catalysts such as quantum dots, IrO2 and MoSx, Ni, Ru and Co species, were supported on nanostructured and mesoporous TiO2 [46][47][48][49][51][52][53] and on TNT arrays produced by Ti anodizing [41][42][43][44][45]50].…”

Section: Introductionmentioning

confidence: 99%

“…There are, however, a number of recent papers dealing with the use of Ptfree catalysts supported on TiO2 for the HER in both, acidic [41][42][43][44][45][46][47][48][49] and alkaline [49][50][51][52][53] electrolytes. Different catalysts such as quantum dots, IrO2 and MoSx, Ni, Ru and Co species, were supported on nanostructured and mesoporous TiO2 [46][47][48][49][51][52][53] and on TNT arrays produced by Ti anodizing [41][42][43][44][45]50]. The TiO2 used was generally nondoped, although a fast electron transfer was reported for N-doped TNTs [44].…”

Section: Introductionmentioning

confidence: 99%

Platinum-catalyzed Nb–doped TiO2 and Nb-doped TiO2 nanotubes for hydrogen generation in proton exchange membrane water electrolyzers

Alcaide

Genova

Álvarez

et al. 2020

International Journal of Hydrogen Energy

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“…This is not only due to their chemical stability, but also because of their low cost and low HER overpotential [13,14]. In the tungsten family, more sophisticated W-based systems have been also reported for HER, including for instance tungsten carbide, tungsten oxide, tungsten sulfide or phosphide, tungsten-based alloys, or their multicomponent composites [18][19][20][21][22][23][24][25][26][27][28][29][30]. Note that tungsten oxide can be also used as electrocatalyst for oxygen reduction [28].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the electrocatalytic properties of Tungsten electrode towards hydrogen evolution reaction in acidic solutions

Mahmoud

Walcarius

Fekry

2019

International Journal of Hydrogen Energy

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Hydrogen has concerned interest universally as an environmentally nontoxic and renewable fuel. Electrocatalytic hydrogen evolution reaction (HER) is one of the utmost favorable methods for hydrogen creation on a vast scale; however, the high cost of Pt-based supplies, which demonstrate the highest activity for HER, forced investigators to look for cheaper electro-catalysts. Tungsten has been considered as an effective, active and low cost electrocatalyst for the hydrogen evolution reaction, mostly in alkaline media, and we have investigated here its behavior in acid electrolytes. HER has been studied utilizing linear polarization technique and electrochemical impedance spectroscopy (EIS). It happens on W at rather low overpotential (-0.32 V vs. NHE at 10 mA cm -2 , in 0.5 M H2SO4), yet more cathodic than the widely used Pt/C catalyst, but not so far from more sophisticated systems developed recently. The effect of acid concentration on the HER rate and the electrode stability was investigated. Cathodic transfer coefficient and exchange current density were calculated for the HER from Tafel curves obtained in H2SO4 solution at concentrations ranging from 0.1 to 3.0 M. EIS experiments were performed under both open circuit and/or cathodic polarization. It was found that the hydrogen evolution rate is relatively high under low overpotential, confirming that W is a possible applicant to substitute more expensive electrocatalysts usually used for the HER under acidic conditions. The process is economic and appropriate with no need for specific treatments, as supported by additional X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) characterization of the tungsten electrode surface.

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Enhancing the hydrogen evolution reaction with Ni-W-TiO2 composites

Cited by 12 publications

References 27 publications

The Influence of Titania Nanoparticles on the Electrodeposition of Ni-Mo-W Composites in Aqueous Electrolytes at Different Electrolyte Temperatures

The Influence of Titania Nanoparticles on the Electrodeposition of Ni-Mo-W Composites in Aqueous Electrolytes at Different Electrolyte Temperatures

Platinum-catalyzed Nb–doped TiO2 and Nb-doped TiO2 nanotubes for hydrogen generation in proton exchange membrane water electrolyzers

Evaluation of the electrocatalytic properties of Tungsten electrode towards hydrogen evolution reaction in acidic solutions

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