Manufacturing of a LaNiO3 composite electrode for oxygen evolution in commercial alkaline water electrolysis

Egelund, Sune; Caspersen, Michael; Nikiforov, Aleksey Valerievich; Møller, Per

doi:10.1016/j.ijhydene.2016.05.013

Cited by 33 publications

(9 citation statements)

References 37 publications

(28 reference statements)

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“…EIS analysis ( Figure 12D ) was performed at a potential at which the current density approached 10 mA cm −2 to investigate the detailed electrochemical process. Charge transfer resistance (R ct ) was determined by model-fitting the EIS spectrum using Randle’s model ( Egelund et al, 2016 ), which is 109 Ω in KOH and 57 Ω in the mixed-solvent system. A significant decrease in R ct resistance with the addition of methanol infers the facility of the diffusion phenomenon due to the formation of salt-like species, M-OOH ( Eq.…”

Section: Resultsmentioning

confidence: 99%

Nickel-doped lanthanum cerate nanomaterials as highly active electrocatalysts

et al. 2022

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The efficient oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) catalyst materials are crucial in the energy research domain due to their tunability. Structural modification in perovskites such as lanthanum cerates (LaCeO3) upon doping at A or B sites significantly affects the surface activity and enhances the catalysis efficacy. Herein, B-site nickel-doped lanthanum cerate (LaCe1-xNixO3±δ) nanopowders were applied as ORR indicators in high-temperature electrochemical impedance spectroscopy for solid-oxide fuel cell (SOFC) tests and in cyclic voltammetric OER investigations in alkaline medium. The integration into SOFC applications, via solid-state EIS in a co-pressed three-layered cell with LCNiO as cathode, is investigated in an oxygen–methane environment and reveals augmented conductivity with temperatures of 700–850°C. The higher electrokinetic parameters—including diffusion coefficients, Do heterogeneous rate constant, ko, and peak current density for OER in KOH-methanol at a LCNiO-9-modified glassy carbon electrode—serve as robust gauges of catalytic performance. CV indicators and EIS conductivities of LaCe1-xNixO3±δ nanomaterials indicate promising potencies for electrocatalytic energy applications.

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Section: Resultsmentioning

confidence: 99%

Nickel-doped lanthanum cerate nanomaterials as highly active electrocatalysts

et al. 2022

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“…Crystalline metal Ni can be used as a collector to improve the conductivity of the electrode. After electrochemical testing, the results show that the Ni/NiSP x -NF catalytic electrode has a remarkable overall water decomposition performance in the simulated industrial environment (at 60 °C and in 6 M NaOH solution) . The high current density of 1000 mA·cm –2 can be obtained at the electrolytic voltage of 2.38 V, which is much higher than the performance of the current industrial catalyst.…”

Section: Introductionmentioning

confidence: 93%

“…After electrochemical testing, the results show that the Ni/NiSP x -NF catalytic electrode has a remarkable overall water decomposition performance in the simulated industrial environment (at 60 °C and in 6 M NaOH solution). 38 The high current density of 1000 mA•cm −2 can be obtained at the electrolytic voltage of 2.38 V, which is much higher than the performance of the current industrial catalyst. In addition, when the current density is 1000 mA•cm −2 , the electrolysis can be stabilized for 30 h, which lays a foundation for large-scale industrialized hydrogen production.…”

Section: ■ Introductionmentioning

confidence: 94%

Self-Supported Ni/NiSP_x Microdendrite Structure for Highly Efficient and Stable Overall Water Splitting in Simulated Industrial Environment

Chen

Che

et al. 2019

ACS Sustainable Chem. Eng.

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The design and development of non-noble metal-based bifunctional electrocatalysts for hydrogen production from catalytic electrolysis of water in industrial environments is very important for the application of hydrogen energy in commercial fields. Here, we report the use of a simple one-step electrodeposition method to prepare amorphous NiSP x microdendritic structure catalytic electrodes with small amount of Ni on nickel foam. The optimal electrocatalyst Ni/NiSP x requires only low overpotentials of 46 and 231 mV for HER and OER at the current density of 10 mA·cm–2, respectively. Even at the commercially practical current density of 1000 mA·cm–2 in simulated industrial environment, it only demands a voltage of 2.38 V and offers remarkable stability for more than 30 h, providing great potential for large-scale applications. Such excellent performance should be attributed to the doping of P or S which optimizes the electronic structure of the Ni active sites, and the unique microdendritic structure exposes more catalytic active sites. This work may open up a new way for the design and preparation of earth-abundant, low-cost bifunctional electrocatalysts with high efficiency and stability in an industrial environment, which is of great significance for the practical application of electrolytic water hydrogen production technology in commercial fields.

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“…Most semiconductors include metals/mixed metal oxides used as efficient photocatalysts with the exceptional adaptability of their properties through compositional variations; perovskites show promise for solar hydrogen production among the large number of photocatalysts being explored. As example of photocatalysts can be mentioned perovskites with formula AFeO 3 , where A: La, Pr, Ce, and perovskites with formula LaBO 3 where B: Co, Mn, Fe [53][54][55]. Under visible light LaFeO 3 with a bandgap of 2.1 eV has an oxygen evolution rate of 331.5 μmol/h*g in ethanol [56]; SrTiO 3 with a bandgap of 3.2 eV has a rate of 18.8 μmol/h*g in ethanol [57].…”

Section: Perovskites In Photocatalysismentioning

confidence: 99%

Perovskite-Based Materials for Energy Applications

Dragan¹,

Enache²,

Varlam³

et al. 2020

Perovskite Materials, Devices and Integration

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The role of energy in modern society is fundamental. Constraints due to the emissions of air pollutants from the excessive use of fossil fuels have increased dramatically in the last years. Over the years various devices and systems have been developed to transform energy from forms supplied by nature to forms that can be used by people. Another issue is to absorb energy generated at one time and to discharge it to supply power at a later time, what is called energy storage. This is also a matter to focus when it comes to searching for solutions of energy problems. Perovskites are promising key materials for energy applications, and in this chapter is a literature review summarizing the reported progress in energy applications of perovskite-type ceramic materials. To understand the fundamental nature of structure-property relationships, defect chemistry plays an important role. This paper, a mini-review, briefly describes from available literature and summarizes accordingly. It is focused on perovskite crystal structures, perovskite materials for solid oxide fuel cells, perovskite electrocatalyst and photocatalysts, and perovskite transport features.

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Manufacturing of a LaNiO3 composite electrode for oxygen evolution in commercial alkaline water electrolysis

Cited by 33 publications

References 37 publications

Nickel-doped lanthanum cerate nanomaterials as highly active electrocatalysts

Nickel-doped lanthanum cerate nanomaterials as highly active electrocatalysts

Self-Supported Ni/NiSP_x Microdendrite Structure for Highly Efficient and Stable Overall Water Splitting in Simulated Industrial Environment

Perovskite-Based Materials for Energy Applications

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Manufacturing of a LaNiO3 composite electrode for oxygen evolution in commercial alkaline water electrolysis

Cited by 33 publications

References 37 publications

Nickel-doped lanthanum cerate nanomaterials as highly active electrocatalysts

Nickel-doped lanthanum cerate nanomaterials as highly active electrocatalysts

Self-Supported Ni/NiSPx Microdendrite Structure for Highly Efficient and Stable Overall Water Splitting in Simulated Industrial Environment

Perovskite-Based Materials for Energy Applications

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Self-Supported Ni/NiSP_x Microdendrite Structure for Highly Efficient and Stable Overall Water Splitting in Simulated Industrial Environment