Fabrication of nickel-yttria stabilized zirconia 3D micro-pattern by atmospheric plasma spray as a dual-functional electrocatalyst for overall water splitting applications in alkaline medium

Sivakumar, S.; Yugeswaran, S.; Sankar, K. Vijaya; Kumaresan, Lakshmanan; Shanmugavelayutham, G.; Tsur, Yoed; Zhu, Jianguo

doi:10.1016/j.jpowsour.2020.228526

Cited by 17 publications

(12 citation statements)

References 55 publications

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“…(C) Atmospheric plasma spray device to create the 3D micro‐pattern catalysts on a stainless‐steel substrate. Reproduced with permission: Copyright 2020, Elsevier B.V 90 . (D) Pulsed‐plasma facility for magnetic self‐assembly of nanotruss structures.…”

Section: Recent Advances Of Plasma‐modified Electrocatalystsmentioning

confidence: 99%

“…Patterned growth of nanostructures or region‐specific adsorption of catalytic nanoblocks on surfaces pre‐patterned with plasma‐generated functional groups such as NH 2 has been used to create micro or nanopatterns on different catalysts 99 . As shown in Figure 7E, Sivakumar et al have designed a one‐step process to fabricate 3D micro‐patterned nickel‐yttria zirconia (Ni–YSZ) by atmospheric plasma spraying to serve as a bifunctional electrocatalyst in HER and OER 90 . Direct deposition of the 3D micropattern with a hill‐valley structure provides a scalable strategy to prepare electrocatalytic electrodes for water splitting.…”

Section: Recent Advances Of Plasma‐modified Electrocatalystsmentioning

confidence: 99%

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Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Luo

Huang

et al. 2022

EcoMat

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Carbon dioxide generated by the combustion of fossil fuels exacerbates global environmental problems and hydrogen produced by renewable energy is a viable alternative in the continuous transition to sustainable and eco‐conscience development. Electrocatalysts are vital to electrocatalytic reactions and plasma surface modification is one of the promising techniques to modify nanoscale electrocatalysts for water splitting. Up to now, a comprehensive review on the latest developments, challenges, and opportunities of plasma‐tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells is lacking. This paper systematically summarizes the current status of hydrogen production and fuel cell technologies, plasma principles and advantages, plasma‐tailored defective electrocatalysts from the perspective of water splitting and fuel cell applications, advanced characterization of defects, relationship between materials structure and catalytic activity of electrocatalysts, and finally challenges, opportunities, and future roadmap of plasma technologies. This review serves as a reference for future development of hydrogen technologies and offers insights into the structural tailoring of catalytic materials.

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Section: Recent Advances Of Plasma‐modified Electrocatalystsmentioning

confidence: 99%

Section: Recent Advances Of Plasma‐modified Electrocatalystsmentioning

confidence: 99%

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Luo

Huang

et al. 2022

EcoMat

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“…Studies have shown that most materials have better catalytic activity for hydrogen evolution under alkaline condition than neutral condition, but the living environment of microorganisms is required to be nearly neutral [28–32] . Therefore, an effective route for improving HER performance of MECs is to develop asymmetric electrolyte electrolysis system [33–37] …”

Section: Introductionmentioning

confidence: 99%

“…[28][29][30][31][32] Therefore, an effective route for improving HER performance of MECs is to develop asymmetric electrolyte electrolysis system. [33][34][35][36][37] In this study, we reported an asymmetric neutral-alkaline double-chamber MEC constructed by coupling Ru/CNTs cathode in 1.0 m KOH catholyte with microorganism attached carbon brush anode in neutral anolyte. The anode and the cathode are separated by a proton exchange membrane (PEM).…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Neutral‐alkaline Microbial Electrolysis Cells for Hydrogen Production

et al. 2022

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The development of highly efficient cathodes for hydrogen production that can operate in a suitable pH condition is a daunting challenge in microbial electrolysis cells (MECs). Herein, an asymmetric neutral-alkaline double-chamber microbial electrolysis cells (AMECs) by using conventional carbon brush with microorganism attached as neutral anode and the Ru/CNTs electrode as alkaline cathode, respectively, was proposed. To implement this, a hybrid with ruthenium nanoparticles loaded on conductive carbon nanotubes (Ru/CNTs) was prepared by a reduction deposition method, which exhibited comparable electrocatalytic performance to the expensive benchmark Pt/C catalysts for hydrogen evolution reaction (HER). Compared to the traditional MECs running in symmetric neutral electrolyte, the as-developed AMEC displayed a higher current density of 17.13 A m À 2 and hydrogen production rate of 0.167 m 3 m À 2 d À 1 . The present AMEC provides an energy-saving and cost-effective process technology for electrolysis H 2 generation.

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“…It was found that catalysts of this family fulfill most of the above mentioned requirements in the alkaline medium [5,11,16,17] . Many reasons for enhancement of electrochemical performance using both experimental and theoretical approaches have been published [5,11,16–25] . Yet, there are only few reports relating electrocatalytic performances with surface energy of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Ni−Co−Fe‐Based Catalysts for Oxygen Evolution Reaction by Surface and Relaxation Phenomena Analysis

et al. 2021

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Trimetallic double hydroxide NiFeCo−OH is prepared by coprecipitation, from which three different catalysts are fabricated by different heat treatments, all at 350 °C maximum temperature. Among the prepared catalysts, the one prepared at a heating and cooling rate of 2 °C min−1 in N2 atmosphere (designated NiFeCo−N2‐2 °C) displays the best catalytic properties after stability testing, exhibiting a high current density (9.06 mA cm−2 at 320 mV), low Tafel slope (72.9 mV dec−1), good stability (over 20 h), high turnover frequency (0.304 s−1), and high mass activity (46.52 A g−1 at 320 mV). Stability tests reveal that the hydroxide phase is less suitable for long‐term use than catalysts with an oxide phase. Two causes are identified for the loss of stability in the hydroxide phase: a) Modeling of the distribution function of relaxation times (DFRT) reveals the increase in resistance contributed by various relaxation processes; b) density functional theory (DFT) surface energy calculations reveal that the higher surface energy of the hydroxide‐phase catalyst impairs the stability. These findings represent a new strategy to optimize catalysts for water splitting.

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Fabrication of nickel-yttria stabilized zirconia 3D micro-pattern by atmospheric plasma spray as a dual-functional electrocatalyst for overall water splitting applications in alkaline medium

Cited by 17 publications

References 55 publications

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Asymmetric Neutral‐alkaline Microbial Electrolysis Cells for Hydrogen Production

Optimization of Ni−Co−Fe‐Based Catalysts for Oxygen Evolution Reaction by Surface and Relaxation Phenomena Analysis

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