3D hierarchical nanostructured Ni–Co alloy electrodes on porous nickel for hydrogen evolution reaction

Zhang, Xundi; Li, Ya; Guo, Yukun; Hu, Anmin; Li, Ming; Ling, Huiqin

doi:10.1016/j.ijhydene.2019.09.193

Cited by 56 publications

(17 citation statements)

References 42 publications

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“…[114][115][116][117] Multicomponent alloys and compounds exhibit a synergistic effect among the elements that promote electron transfer and, as a result, improves the HER activity. [118][119][120][121][122][123][124][125][126][127][128][129] Table 6 summarizes the deposition conditions and HER activity of state-of-the-art transition metal compounds in alkaline media. [104, Bubble-templating electrodeposition is an effective strategy for porous catalyst fabrication having numerous active sites.…”

Section: 22mentioning

confidence: 99%

“…[104, Bubble-templating electrodeposition is an effective strategy for porous catalyst fabrication having numerous active sites. [115,119,120] Siwek et al prepared a 3D Ni foam electrode using bubble-templating electrodeposition with various concentrations of NH 4 Cl and NaCl in a deposition electrolyte. [115] The electrolyte composition was found to affect the porosity and morphology of the 3D Ni foam.…”

Section: 22mentioning

confidence: 99%

“…[ 114–117 ] Multicomponent alloys and compounds exhibit a synergistic effect among the elements that promote electron transfer and, as a result, improves the HER activity. [ 118–129 ] Table 6 summarizes the deposition conditions and HER activity of state‐of‐the‐art transition metal compounds in alkaline media. [ 104,114–145 ]…”

Section: Self‐supported Electrodes Prepared By Electrodepositionmentioning

confidence: 99%

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Electrodeposition: An efficient method to fabricate self‐supported electrodes for electrochemical energy conversion systems

Kim

Han

et al. 2022

Exploration

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The development of electrocatalysts for energy conversion systems is essential for alleviating environmental problems and producing useful energy sources as alternatives to fossil fuels. Improving the catalytic performance and stability of electrocatalysts is a major challenge in the development of energy conversion systems. Moreover, understanding their electrode structure is important for enhancing the energy efficiency. Recently, binder-free self-supported electrodes have been investigated because the seamless contact between the electrocatalyst and substrate minimizes the contact resistance as well as facilitates fast charge transfer at the catalyst/substrate interface and high catalyst utilization. Electrodeposition is an effective and facile method for fabricating self-supported electrodes in aqueous solutions under mild conditions. Facile fabrication without a polymer binder and controlability of the compositional and morphological properties of the electrocatalyst make electrodeposition methods suitable for enhancing the performance of energy conversion systems. Herein, we summarize recent research on self-supported electrodes fabricated by electrodeposition for energy conversion reactions, particularly focusing on cathodic reactions of electrolyzer system such as hydrogen evolution, electrochemical CO 2 reduction, and electrochemical N 2 reduction reactions. The deposition conditions, morphological and compositional properties, and catalytic performance of the electrocatalyst are reviewed. Finally, the prospective directions of electrocatalyst development for energy conversion systems are discussed.

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Section: 22mentioning

confidence: 99%

Section: 22mentioning

confidence: 99%

Section: Self‐supported Electrodes Prepared By Electrodepositionmentioning

confidence: 99%

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Electrodeposition: An efficient method to fabricate self‐supported electrodes for electrochemical energy conversion systems

Kim

Han

et al. 2022

Exploration

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“…Noteworthy, a variety of narrow‐bandgap or gapless materials, such as MoS 2 , [ 231,232 ] cobalt sulfide, [ 233,234 ] Pt−Ni−S alloy, [ 235,236 ] Co−Ni alloy, [ 237,238 ] and nickel−nickel oxide hybrid, [ 239,240 ] have manifested both intrinsically high electrocatalytic activity for HER/OER and strong light absorption in the solar spectrum range. They provide fascinating platforms for customizing simple and high‐efficiency photothermal catalytic systems.…”

Section: Light‐assisted Electrocatalytic Her/oermentioning

confidence: 99%

Promoting Electrocatalytic Hydrogen Evolution Reaction and Oxygen Evolution Reaction by Fields: Effects of Electric Field, Magnetic Field, Strain, and Light

et al. 2020

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promising alternative to fossil fuels. Water electrolysis by renewable resourcederived electricity represents a facile and green route to produce H 2. [1-13] Generally, the key to implement high-performance water splitting is to develop economically viable, efficient, and robust electrocatalysts to lower the activation potential barriers. Thus far, researchers have devoted extensive enthusiasm to the investigation of electrocatalysts. Currently, most efforts have been taken on the search for new materials, [14-16] regulation of morphology, [17] crystallinity, [18] facet, [19] component, [20-24] defect, [25,26] matter phase, [27,28] or the compositing of various materials with synergy. [29-36] However, the performances of emerging nonnoble electrocatalysts still lag behind those of noble ones. To address this issue, researchers have turned their attention beyond the electrocatalysts themselves. Field-assisted electrocatalysis is the electrocatalytic reaction proceeded in the presence of a field. It represents a promising methodology since it exerts an additional degree of freedom to engineer an electrochemical process. Inspiringly, indisputable improvements in electrocatalytic hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) have been implemented with the assist of various fields, including electric field, magnetic field, strain, and light. For example, the electrocatalytic HER of a MoS 2 nanosheet is markedly boosted by simply exploiting a back gate voltage of 5 V. [37] Its overpotential at −100 mA cm −2 is decreased from 240 to 38 mV. In addition, enhancement of alkaline water electrolysis is achieved by applying a moderate magnetic field (≤450 mT) to an electrocatalytic anode consists of highly magnetic electrocatalysts. [38] Its current density increments are beyond 100%. Furthermore, the HER activity of β-PdH x increases monotonically as the applied strain increases from 0% to 4.5%. [39] Lastly, an approximately threefold increase in current density of Au-MoS 2 for electrocatalytic HER is realized upon the illumination of IR light. [40] These results undoubtedly elucidate that applying a field during electrocataly sis opens up great opportunities toward further improving electrocatalytic activity. Moreover, this approach provides merits of facile, dynamical, continuous, reversible, and universal control. Despite fascinating achievements, these investigations are relatively scattered. The underneath mechanisms and principles Hydrogen fuel is considered as one of the most clean renewable resources, warranting it a primary alternative to fossil fuels for future energy supplies. Electrocatalytic water splitting is an eco-friendly technique for high-purity hydrogen production. However, the sluggish dynamics of its two halfreactions, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), are tough challenges impeding the practical application of this technology. In these years, external field-assisted HER and OER have attracted extensive research interests. Herein, the effects o...

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“…Moreover, Warrier et al [68] stated that rougher surfaces facilitate hydrogen evolution in detriment to hydrogen absorption. Likewise, other studies pointed out that porosity also boosts hydrogen evolution because empty spaces can work as encouraging sites for hydrogen atoms recombination and as a barrier to hydrogen diffusion [69][70][71][72].…”

Section: Hydrogen-induced Cracking (Hic)mentioning

confidence: 99%

Effects of thermal spray aluminium coating on SSC and HIC resistance of high strength steel in a sour environment

Bertoncello

Simoni

Tagliari

et al. 2020

Surface and Coatings Technology

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Flexible risers are critical equipment for the production of oil and gas in offshore fields around the world. The annulus region may condense acidic water containing H 2 S exposing the tensile armour steel wires to a sour environment, which may promote sulphide stress cracking (SSC) and/or hydrogen-induced cracking (HIC). This work aims to evaluate through electrochemical and constant displacement tests the effectiveness of thermal spray aluminium (TSA) coating to mitigate SSC and HIC in high strength steel used to manufacture the tensile armour of a flexible riser. Electrochemical tests confirmed the anodic behaviour of the coating against the steel and estimated a service life of 2.5 years. The constant displacement test indicated that the non-coated samples failed by SSC although some cracks were also found in the samples mid-section due to HIC. For Al-coated samples, no signs of SSC and HIC were observed. The TSA coating showed a dual barrier effect, hindering either corrosion of steel or hydrogen up-taking, and neither SSC nor HIC was observed. Samples with a coating defect were cathodically protected and no HIC was observed.

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3D hierarchical nanostructured Ni–Co alloy electrodes on porous nickel for hydrogen evolution reaction

Cited by 56 publications

References 42 publications

Electrodeposition: An efficient method to fabricate self‐supported electrodes for electrochemical energy conversion systems

Electrodeposition: An efficient method to fabricate self‐supported electrodes for electrochemical energy conversion systems

Promoting Electrocatalytic Hydrogen Evolution Reaction and Oxygen Evolution Reaction by Fields: Effects of Electric Field, Magnetic Field, Strain, and Light

Effects of thermal spray aluminium coating on SSC and HIC resistance of high strength steel in a sour environment

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