Review on recent advancement in cathode material for lower and intermediate temperature solid oxide fuel cells application

Ahmad, Muhammad Zaid; Ahmad, Sahrim; Chen, Ruey Shan; Ismail, Aznan Fazli; Hazan, Roshasnorlyza; Baharuddin, Nurul Akidah

doi:10.1016/j.ijhydene.2021.10.094

Cited by 84 publications

(30 citation statements)

References 159 publications

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“…This rate depends on chemical composition [ 16 , 17 , 18 ] and microstructure [ 19 , 20 ]. In traditional SOFC technology, the main problems are the high working temperatures, which creates a complicated and expensive manufacturing process for the solid ceramic electrolyte [ 21 ]. When the solutions characteristic of both technologies are combined, it is possible to eliminate many disadvantages of the individual systems and improve efficiency and durability.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of a Composite Ni-SDC Fuel Cell Cathode Reinforced by Ni Foam

et al. 2022

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High-temperature fuel cells (namely, molten carbonate and solid oxide; MCFCs and SOFCs) require the cathode to be designed to maximize oxygen catalytic reduction, oxygen ion transport, electrical conductivity, and gas transport. This then leads to the optimization of the volume fraction and morphology of phases, as they are a pathway for electrons, ions, and gases to be continuous and self-interpenetrating. Apart from the functional properties, the cathode must be mechanically stable to prevent cracking during fuel cell assembly and operation. The manufacturing process of the composite cathode was optimized to meet such requirements in this research work. The tape casting technique and further firing process were used to fabricate the cathodes. The slurry for the green tape was composed of nickel (Ni), cerium oxide doped with samarium oxide (SDC), water (solvent), and an organic binder (which becomes pore space after firing). Each of these elements is necessary for the effective transport of specific species: electrons, oxygen, ions, and gas particles, respectively. Moreover, the nickel foam was embedded into the powder-based structure to improve mechanical strength. The study involved many technological issues, such as the effect of the SDC fraction on the cathode microstructure, mechanical strength, and chemical stability at high temperatures, and also involved environmental issues.

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Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of a Composite Ni-SDC Fuel Cell Cathode Reinforced by Ni Foam

et al. 2022

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“…In the overwhelming majority of cases, a composite based on Ni is used as an anode material [ 16 , 17 , 18 ], and the most commonly cathode materials of O-SOFC are La 1-x Sr x MnO 3 (LSM) [ 19 ] and La 1-x Sr x Co 1-y Fe y O 3 (LSCF) [ 20 ]. At the same time, extensive research isbeing conducted to find new electrode materials [ 6 , 21 , 22 , 23 , 24 , 25 ]. Another area of research that has the prospect of improving SOFC performances is the creation of nanostructures [ 26 , 27 ].…”

Section: Classification Of Sofcmentioning

confidence: 99%

Classification of Solid Oxide Fuel Cells

et al. 2022

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Solid oxide fuel cells (SOFC) are promising, environmentally friendly energy sources. Many works are devoted to the study of materials, individual aspects of SOFC operation, and the development of devices based on them. However, there is no work covering the entire spectrum of SOFC concepts and designs. In the present review, an attempt is made to collect and structure all types of SOFC that exist today. Structural features of each type of SOFC have been described, and their advantages and disadvantages have been identified. A comparison of the designs showed that among the well-studied dual-chamber SOFC with oxygen-ion conducting electrolyte, the anode-supported design is the most suitable for operation at temperatures below 800 °C. Other SOFC types that are promising for low-temperature operation are SOFC with proton-conducting electrolyte and electrolyte-free fuel cells. However, these recently developed technologies are still far from commercialization and require further research and development.

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“…The process involved in SOFC is oxygen reduction reaction (ORR), and it is believed to be the main contributor to electrode polarization resistance. La x Sr 1−x Co y Fe 1−y O 3−ð (LSCF), a perovskite type cathode, has received a lot of attention due to its ability to create a bulk pathway for oxygen anion transport and high ionic and electronic conductivity compared to other oxide electrocatalysts [2]. However, the ORR of LSCF cathode is only limited to the surface exchange process, and the addition of another material will enable bulk charge transport, which will theoretically improve the ORR process that occurs in the cathode [3].…”

Section: Introductionmentioning

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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Review on recent advancement in cathode material for lower and intermediate temperature solid oxide fuel cells application

Cited by 84 publications

References 159 publications

Fabrication and Characterization of a Composite Ni-SDC Fuel Cell Cathode Reinforced by Ni Foam

Fabrication and Characterization of a Composite Ni-SDC Fuel Cell Cathode Reinforced by Ni Foam

Classification of 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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