Electrochemical performance of novel NGCO-LSCF composite cathode for intermediate temperature solid oxide fuel cells

Samreen, Ayesha; Gálvez-Sánchez, María; Steinberger‐Wilckens, Robert; Arifin, Nor Anisa; Saher, Saim; Ali, Shahid; Qamar, Affaq

doi:10.1016/j.ijhydene.2020.04.122

Cited by 18 publications

(11 citation statements)

References 47 publications

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“…[100] Likewise, increase in surface oxygen exchange kinetics and expansion of electrochemical reaction zone in the LSCF-GCO composite can be achieved by incorporating GCO to A-site deficient LSCF material. [101] As reported in different studies, the observed variation in polarization resistance can be linked to the size and configuration of LSCF when different amounts of GCO are introduced. [102,103] Figure 13 shows SEM images of LSCF-GCO cathodes with different compositions.…”

Section: Lscf (La 1-x Sr X Co 1-y Fe Y O 3-δ ) Cathode Materialsmentioning

confidence: 83%

Advancements in Perovskite‐Based Cathode Materials for Solid Oxide Fuel Cells: A Comprehensive Review

Samreen,

Ali,

Huzaifa

et al. 2023

The Chemical Record

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The high‐temperature solid oxide fuel cells (SOFCs) are the most efficient and green conversion technology for electricity generation from hydrogen‐based fuel as compared to conventional thermal power plants. Many efforts have been made to reduce the high operating temperature (>800 °C) to intermediate/low operating temperature (400 °C<T<800 °C) in SOFCs in order to extend their life span, thermal compatibility, cost‐effectiveness, and ease of fabrication. However, the major challenges in developing cathode materials for low/intermediate temperature SOFCs include structural stability, catalytic activity for oxygen adsorption and reduction, and tolerance against contaminants such as chromium, boron, and sulfur. This research aims to provide an updated review of the perovskite‐based state‐of‐the‐art cathode materials LaSrMnO3 (LSM) and LaSrCOFeO3 (LSCF), as well as the recent trending Ruddlesden‐Popper phase (RP) and double perovskite‐structured materials SOFCs technology. Our review highlights various strategies such as surface modification, codoping, infiltration/impregnation, and composites with fluorite phases to address the challenges related to LSM/LSCF‐based electrode materials and improve their electrocatalytic activity. Moreover, this study also offers insight into the electrochemical performance of the double perovskite oxides and Ruddlesden‐Popper phase materials as cathodes for SOFCs.

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Section: Lscf (La 1-x Sr X Co 1-y Fe Y O 3-δ ) Cathode Materialsmentioning

confidence: 83%

Advancements in Perovskite‐Based Cathode Materials for Solid Oxide Fuel Cells: A Comprehensive Review

Samreen,

Ali,

Huzaifa

et al. 2023

The Chemical Record

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“…The thermal decomposition behavior analysis of the LSCF-ZnO was conducted using a TGA zanalyzer model Pelkin Elmer STA 600®, from 30 o C to 800 o C with a heating rate of 5 o C/min in air and air flowrate of 50 cm 3 /min. For calcined composited cathode powder, the value of oxygen stoichiometric was calculated via equation 1 (Samreen et al, 2020). 𝛥𝑚/𝑚 𝑠 refers to weight loss of the material, Msample represent the molecular weight of the sample, Moxygen refers to molecular weight of oxygen.…”

Section: Characterization Proceduresmentioning

confidence: 99%

Influence of ZnO on Electrochemical and Physiochemical Properties of Lanthanum Strontium Cobalt Ferrite as Cathode for Intermediate Temperature Solid Oxide Fuel Cells

Fatah¹,

Mohamad²,

Ali³

et al. 2023

IJTech

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This study investigates the impact of zinc oxide on the physical characteristics and electrochemical behavior of the LaSrCoFe (LSCF) cathode. Electrochemical impedance spectra in conjunction with the bode phase were used to optimize the amount of zinc oxide addition in the LSCF cathode. Brunauer-Emmett-Teller (BET) and thermal analysis were utilized to substantiate the electrochemical discovery that the LSCF: ZnO ratio yields rational oxygen reduction reaction and stoichiometric outcomes. Initial characterization, comprising of phase and bonding analyses, indicated that LSCF-ZnO was successfully synthesized at 800 º C using an improved modified sol-gel technique. The addition of 5% zinc oxide to LSCF results in the lowest overall area-specific resistance (ASR) rating. The Bode phase implies that the addition of 5% zinc oxide to LSCF reduces the low-frequency impedance by 64.28%, indicating that the cathode experienced a greater oxygen reduction reaction. After the addition of 5% zinc oxide, a single LSCF-ZnO 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-ZnO cathode reveals an overall particle size of less than 100 nm, and mapping analysis reveals a homogeneous distribution of ZnO over the cathode layer. Consequently, LSCF-ZnO demonstrated outstanding chemical compatibility between LSCF and ZnO, bonding characteristics, and electrochemical performance with the capacity to function at an intermediate temperature (600 °C -800 °C).

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“…The thermal decomposition behaviour of LSCF-NiO was investigated using a TGA analyser model Pelkin Elmer STA 600 ® from room temperature to 900 • C with an air flow rate of 50 cm 3 /min and a heating rate of 5 • C/min in air. The oxygen stoichiometric value of calcined composited cathode powder was calculated using Equation (2) [24]. ∆m/m s refers to weight loss of the material, M sample represent the molecular weight of the sample, M oxygen refers to molecular weight of oxygen.…”

Section: Characterizationmentioning

confidence: 99%

“…The study was conducted at temperatures ranging from room temperature to 800 • C to simulate the oxygen filling and emptying capabilities of the device when utilized at an intermediate temperature range [28,29]. According to the graph's trend between 30 and 300 • C, the weight loss indicated the evacuation of absorbed water from the surrounding environment [24]. A slight weight increase was observed above 300 • C, implying that Co 3+ /Fe 3+ is thermally oxidized to Co 4+ /Fe 4+ .…”

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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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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Electrochemical performance of novel NGCO-LSCF composite cathode for intermediate temperature solid oxide fuel cells

Cited by 18 publications

References 47 publications

Advancements in Perovskite‐Based Cathode Materials for Solid Oxide Fuel Cells: A Comprehensive Review

Advancements in Perovskite‐Based Cathode Materials for Solid Oxide Fuel Cells: A Comprehensive Review

Influence of ZnO on Electrochemical and Physiochemical Properties of Lanthanum Strontium Cobalt Ferrite as Cathode for Intermediate Temperature Solid Oxide Fuel Cells

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

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