Nano-fabrication of a high-performance LaNiO3 cathode for solid oxide fuel cells using an electrochemical route

Rehman, Saeed Ur; Shaur, Ahmad; Song, Rak‐Hyun; Lim, Tak‐Hyoung; Hong, Jong‐Eun; Park, Seok-Joo; Lee, Seung-Bok

doi:10.1016/j.jpowsour.2019.05.007

Cited by 41 publications

(26 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The LaNiO 3 (LNO) oxides and similar materials with partial substitution of B site by other transition metals such as chromium, cobalt, iron, and manganese, have been extensively studied as electrocatalysts for the oxygen reduction reaction/oxygen evolution reaction (ORR/OER) in electrochemical applications. More specifically, LNO perovskites have been tested as cathodes in solid oxide fuel cells [24], electrocatalysts for ORR in fuel cells, and bifunctional catalysts (OER/ORR) for regenerative fuel cells and metal-air batteries [25,26]. Furthermore, they have also been evaluated as cathodes in direct borohydride fuel cells [27].…”

Section: Introductionmentioning

confidence: 99%

Lanthanum Nickel Oxide: An Effective Heterogeneous Activator of Sodium Persulfate for Antibiotics Elimination

et al. 2020

View full text Add to dashboard Cite

In recent years, the presence of pharmaceutically active compounds (PhACs) in surface waters and wastewaters has b the effectiveness of conventional water treatment methods. Towards this direction, advanced oxidation processes (AOPs) for the complete elimination of micro pollutants in waters have become an emerging area of research. The present study reports the heterogeneous activation of sodium persulfate (SPS) by LaNiO3 (LNO) perovskite oxide for the degradation of sulfamethoxazole (SMX), an antibiotic agent. LNO was prepared according to a combustion method, and its physicochemical characteristics were identified by means of XRD, BET, TEM, and SEM/EDS. SMX degradation results showed the great efficiency of LNO for SPS activation. Increasing LNO and SPS dosage up to 250 mg/L enhanced the SMX degradation. In contrast, increasing SMX concentration resulted in longer time periods for its degradation. Considering the pH effect, SMX removal was obstructed under basic conditions, while the efficiency was enhanced at near-neutral conditions. The present system’s activity was also tested for piroxicam (PIR) and methylparaben (MeP) degradation, showing promising results. Unfortunately, experiments conducted in real water matrices such as bottled water (BW) and wastewater (WW), showed that SMX removal was limited to less than 25% in both cases. The hindering effects were mainly attributed to bicarbonate ions and organic matter present in aqueous media. The results obtained using suitable radical scavengers revealed the contribution of both hydroxyl and sulfate radicals in degradation reactions. Finally, LNO exhibited good stability under consecutive experimental runs.

show abstract

Section: Introductionmentioning

confidence: 99%

Lanthanum Nickel Oxide: An Effective Heterogeneous Activator of Sodium Persulfate for Antibiotics Elimination

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Chemically assisted electrodeposition (CAED) is a relatively new technique for fabricating nanostructured SOFC cathodes in a single loading step which has the advantage of the simultaneous deposition of multiple cations while using dilute aqueous solutions of salts. It was developed by Rehman et al [ 52 , 53 , 54 ]. The proposed method involves CAED of mixed-metal hydroxide onto a carbon nanotube (CNT) template, followed by a low-temperature heat-treatment process (see the scheme in Figure 2 ).…”

Section: Electrodeposition Technology For the Fabrication Of Sofc Air Electrodes With Increased Performancementioning

confidence: 99%

“…For the fabrication of composite cathodes by CAED, a two-compartment electro-chemical cell separated by an anion exchange membrane was used, as shown in Figure 3 [ 53 ]. Compartment 1 contained the mixed-metal nitrate solution; compartment 2 contained a KNO 3 solution at the same concentration.…”

Section: Electrodeposition Technology For the Fabrication Of Sofc Air Electrodes With Increased Performancementioning

confidence: 99%

“…As a result, the cell specific power density was increased up to 1275 mW cm −2 at 800 °C, while the values of ohmic and polarization resistance were 0.18 and 0.61 Ω cm 2 , respectively; this is 2.65 times higher than the maximum power density of the SOFC with the conventional LaCoO 3 –ScCeSZ cathode sintered at 1200 °C, due to having to avoid the formation of insulating pyrochlore phases during the calcination of the electrode obtained by CAED at remarkably lower temperatures. In [ 53 ], CAED was applied to the fabrication of a cobalt-free LaNiO 3 (LNO)–Ce 0.9 Gd 0.1 O 1.95 (GDC) composite cathode. The porous GDC backbone was fabricated by screen printing on the dense ScCeSZ electrolyte; then, CNTs were deposited onto the walls of the porous GDC scaffolds by the CCVD method [ 52 ].…”

Section: Electrodeposition Technology For the Fabrication Of Sofc Air Electrodes With Increased Performancementioning

confidence: 99%

See 1 more Smart Citation

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

Калинина

Pikalova

2021

Materials

View full text Add to dashboard Cite

Electrolytic deposition (ELD) and electrophoretic deposition (EPD) are relevant methods for creating functional layers of solid oxide fuel cells (SOFCs). This review discusses challenges, new findings and prospects for the implementation of these methods, with the main emphasis placed on the use of the ELD method. Topical issues concerning the formation of highly active SOFC electrodes using ELD, namely, the electrochemical introduction of metal cations into a porous electrode backbone, the formation of composite electrodes, and the electrochemical synthesis of perovskite-like electrode materials are considered. The review presents examples of the ELD formation of the composite electrodes based on porous platinum and silver, which retain high catalytic activity when used in the low-temperature range (400–650 °C). The features of the ELD/EPD co-deposition in the creation of nanostructured electrode layers comprising metal cations, ceramic nanoparticles, and carbon nanotubes, and the use of EPD to create oriented structures are also discussed. A separate subsection is devoted to the electrodeposition of CeO2-based film structures for barrier, protective and catalytic layers using cathodic and anodic ELD, as well as to the main research directions associated with the deposition of the SOFC electrolyte layers using the EPD method.

show abstract

“…In the last years, extensive research has been devoted to study the structural and electrochemical properties of nanostructured MIECs as cathodes for IT-SOFCs [1,2,3,4,5,6,7,8]. These materials are very interesting because the number of active sites for the ORR is expected to increase dramatically due to the increase of the specific surface area.…”

Section: Introductionmentioning

confidence: 99%

Crystal structure, cobalt and iron speciation and oxygen non-stoichiometry of La0.6Sr0.4Co1-yFeyO3-δ nanorods for IT-SOFC cathodes

Gómez

Sacanell

Huck‐Iriart

et al. 2020

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Single-phased La 0.6 Sr 0.4 Co 1-y Fe y O 3-d (y = 0.2, 0.5, 0.8) nanorods exhibiting the rhombohedral perovskite-type phase were synthesized by a pore-wetting technique. We studied their chemical composition, crystal and electronic structures, morphology and hyperfine properties as a function of the Co/Fe content of the samples. Our results demonstrate that Co cations exhibit a slightly lower oxidation state than Fe ones, resulting in a higher oxygen non-stoichiometry d for Co-rich samples. In addition, the values of d determined in this work for nanostructured samples are much higher than those reported in the literature for bulk materials. This can be attributed to the high degree of defects in nanomaterials and is probably one important factor in the high electrochemical performance for the oxygen reduction reaction of nanostructured La 0.6 Sr 0.4 Co 1-y Fe y O 3-d IT-SOFC cathodes, which have been reported in a previous work.

show abstract

Nano-fabrication of a high-performance LaNiO3 cathode for solid oxide fuel cells using an electrochemical route

Cited by 41 publications

References 60 publications

Lanthanum Nickel Oxide: An Effective Heterogeneous Activator of Sodium Persulfate for Antibiotics Elimination

Lanthanum Nickel Oxide: An Effective Heterogeneous Activator of Sodium Persulfate for Antibiotics Elimination

Opportunities, Challenges and Prospects for Electrodeposition of Thin-Film Functional Layers in Solid Oxide Fuel Cell Technology

Crystal structure, cobalt and iron speciation and oxygen non-stoichiometry of La0.6Sr0.4Co1-yFeyO3-δ nanorods for IT-SOFC cathodes

Contact Info

Product

Resources

About