Physical characterization of LSCF-NiO as cathode material for intermediate temperature solid oxide fuel cell (IT-SOFCs)

Rosli, Ahmad Zaki; Somalu, Mahendra Rao; Osman, Nafisah; Hamid, Noorashrina A.

doi:10.1016/j.matpr.2021.01.778

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…The goal of this study was to see how adding nickel oxide to the LSCF cathode affected chemical compatibility, specific surface area, electrochemical performance, single cell applicability, and surface morphology. This study is a continuation of Rosli et al [18] with the addition of optimization value for nickel oxide addition that can improve the LSCF cathode that operates in IT-SOFCs (600 • C-800 • C) and further elaboration toward low frequency impedance and high frequency impedance. Thus, a series of cathode materials with varying nickel oxide addition percentages were manufactured.…”

Section: Introductionmentioning

confidence: 91%

“…Rp is the sum of the arc at high frequency and the arc at low frequency (Rp = R1 + R2). To facilitate comparison, Ro was subtracted from each Based on Rietveld refinement analysis described in Figure 1a,b, a comparison peak was taken between LSCF-NiO synthesized with the enhanced modified sol gel method and LSCF-NiO synthesized via the Pechini method from previous research [18]. Previ-ously, Rosli et al [18] claimed LSCF-NiO was successfully synthesized via the Pechini method at 800 • C. Figure 1c revealed a comparison peak between LSCF-NiO (EM-SG method) and LSCF-NiO (Pechini method) with LSCF (JCPDS = 01-089-1268) and NiO (JCPDS = 01-078-0423).…”

Section: Electrochemical Properties Of the Symmetrical Composite Cath...mentioning

confidence: 99%

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Electrochemical Evaluation of Nickel Oxide Addition toward Lanthanum Strontium Cobalt Ferrite Cathode for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFCS)

et al. 2022

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A mixture of lanthanum strontium cobalt ferrite (LSCF) and nickel oxide (NiO) makes for a desirable cathode material for an IT-SOFC due to its excellent oxygen reduction capability. This study investigates the effect of NiO addition into LSCF cathode on its physical and electrochemical properties. To optimise the amount of NiO addition, both electrochemical impedance spectra and bode phase were used to examine various weight ratios of nickel oxide and LSCF cathode. Brunauer-Emmett-Teller (BET) and thermal analyses validated the electrochemical observation that the LSCF:NiO ratio yields sensible oxygen reduction reaction and stoichiometric findings. Initial characterisation, comprising of phase and bonding analyses, indicated that LSCF-NiO was successfully synthesised at 800 °C using an improved modified sol gel technique. The addition of 5% nickel oxide to LSCF results in the lowest area specific resistance (ASR) value overall. The Bode phase implies that the addition of 5% nickel oxide to LSCF reduces the impedance at low frequencies by 64.28 percent, indicating that a greater oxygen reduction process happened at the cathode. After the addition of 5 wt% NiO, a single LSCF-NiO cell may function at temperatures as low as 650 °C and the LSCF cathode power density is increased by 25.35%. The surface morphology of the LSCF-NiO cathode reveals that the average particle size is less than 100 nm, and mapping analysis demonstrated a homogenous NiO distribution over the cathode layer. Consequently, the synthesis of LSCF-NiO at intermediate temperatures (800–600 °C) revealed outstanding chemical compatibility, bonding characteristics, and electrochemical performance.

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Section: Introductionmentioning

confidence: 91%

Section: Electrochemical Properties Of the Symmetrical Composite Cath...mentioning

confidence: 99%

Electrochemical Evaluation of Nickel Oxide Addition toward Lanthanum Strontium Cobalt Ferrite Cathode for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFCS)

et al. 2022

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“…This matter once again drew attention towards MIEC, where a great expansion in the reaction zones was believed to improve the performance of the cathode layer at lower operating temperatures. However, instead of using pure Co perovskites, solid solutions of iron-based perovskites such as (La 1−x Sr x )(Co y Fe 1-y )O 3 (LSCF) were proposed, to improve the chemical and mechanical properties of the cath-ode layer [216,217]. Alternative perovskite materials such as La 1−x Sr x FeO 3 (LSF) and La 1−x Sr x CoO 3 (LSC) were also individually investigated [218][219][220][221].…”

Section: Cathode Design and Materialsmentioning

confidence: 99%

Recent Advances and Challenges in Thin-Film Fabrication Techniques for Low-Temperature Solid Oxide Fuel Cells

2023

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Solid oxide fuel cells (SOFCs) are amongst the most widely used renewable alternative energy systems with near-zero carbon emission, high efficiency, and environment-friendly features. However, the high operating temperature of SOFCs is still considered a major challenge due to several issues regarding the materials’ corrosion, unwanted reactions between layers, etc. Thus, low-temperature SOFCs (LT-SOFCs) have gained significant interest during the past decades. Despite the numerous advantages of LT-SOFCs, material selection for each layer is of great importance as the common materials have not shown a desirable performance so far. In addition to the selection of the materials, fabrication techniques have a great influence on the properties of the SOFCs. As SOFCs with thinner layers showed lower polarisation resistance, especially in the electrolyte layer, different thin-film fabrication methods have been employed, and their effect on the overall performance of SOFCs has been evaluated. In this review, we aim to discuss the past and recent progress on the materials and thin-film fabrication techniques used in LT-SOFCs.

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Metal–oxide-based flexible fuels cells

Nunes,

Pimentel,

Barquinha

et al. 2025

Flexible Devices Based on Metal Oxides

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Physical characterization of LSCF-NiO as cathode material for intermediate temperature solid oxide fuel cell (IT-SOFCs)

Cited by 8 publications

References 29 publications

Electrochemical Evaluation of Nickel Oxide Addition toward Lanthanum Strontium Cobalt Ferrite Cathode for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFCS)

Electrochemical Evaluation of Nickel Oxide Addition toward Lanthanum Strontium Cobalt Ferrite Cathode for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFCS)

Recent Advances and Challenges in Thin-Film Fabrication Techniques for Low-Temperature Solid Oxide Fuel Cells

Metal–oxide-based flexible fuels cells

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