Comparative study on ammonia oxidation over Ni-based cermet anodes for solid oxide fuel cells

Molouk, Ahmed Fathi Salem; Yang, Jun; Okanishi, Takeou; Muroyama, Hiroki; Matsui, Toshiaki; Eguchi, Koichi

doi:10.1016/j.jpowsour.2015.11.085

Cited by 65 publications

(31 citation statements)

References 39 publications

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“…282 These results reveal that the high performance of the Ni-GDC anode for a direct NH 3 -fueled SOFC results from the mixed ionic-electronic conductivity of GDC under a reducing atmosphere and high catalytic activity for ammonia decomposition. 282 Hydrogen Evolution from Hydrazine Hydrous hydrazine (N 2 H 4 ,H 2 O), which is a water-like liquid over a wide range of temperature (213-392 K) with high hydrogen density (8 wt %) and relatively low cost, can be safely stored under ambient conditions and readily transported using the existing fuel infrastructure. [283][284][285] Thus, hydrous hydrazine has attracted much attention as a potential hydrogen carrier for vehicular or portable applications.…”

Section: Direct Methanol Fuel Cellmentioning

confidence: 81%

“…281 The performance of an SOFC with a Ni-yttria stabilized zirconia (Ni-YSZ) anode was compared with a Ni-gadolinia-dope ceria (Ni-GDC) cermet anode fueled with H 2 or NH 3 in terms of the catalytic activity of ammonia decomposition. 282 The performance of a direct NH 3 -fueled SOFC was improved by using the Ni-GDC anode compared with the Ni-YSZ anode, because the cermet of Ni-GDC showed higher catalytic activity for ammonia decomposition than Ni-YSZ. 282 Moreover, further enhancement in cell performance and catalytic activity for ammonia decomposition was achieved by applying the Ni-GDC anode synthesized by the glycine-nitrate combustion process.…”

Section: Direct Methanol Fuel Cellmentioning

confidence: 99%

“…282 The performance of a direct NH 3 -fueled SOFC was improved by using the Ni-GDC anode compared with the Ni-YSZ anode, because the cermet of Ni-GDC showed higher catalytic activity for ammonia decomposition than Ni-YSZ. 282 Moreover, further enhancement in cell performance and catalytic activity for ammonia decomposition was achieved by applying the Ni-GDC anode synthesized by the glycine-nitrate combustion process. 282 These results reveal that the high performance of the Ni-GDC anode for a direct NH 3 -fueled SOFC results from the mixed ionic-electronic conductivity of GDC under a reducing atmosphere and high catalytic activity for ammonia decomposition.…”

Section: Direct Methanol Fuel Cellmentioning

confidence: 99%

“…282 Moreover, further enhancement in cell performance and catalytic activity for ammonia decomposition was achieved by applying the Ni-GDC anode synthesized by the glycine-nitrate combustion process. 282 These results reveal that the high performance of the Ni-GDC anode for a direct NH 3 -fueled SOFC results from the mixed ionic-electronic conductivity of GDC under a reducing atmosphere and high catalytic activity for ammonia decomposition. 282 Hydrogen Evolution from Hydrazine Hydrous hydrazine (N 2 H 4 ,H 2 O), which is a water-like liquid over a wide range of temperature (213-392 K) with high hydrogen density (8 wt %) and relatively low cost, can be safely stored under ambient conditions and readily transported using the existing fuel infrastructure.…”

Section: Direct Methanol Fuel Cellmentioning

confidence: 99%

See 3 more Smart Citations

Production of Liquid Solar Fuels and Their Use in Fuel Cells

Fukuzumi

2017

Joule

181

116

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This review focuses on the production of liquid fuels using solar energy combined with their use in direct liquid fuel cells. The production of formic acid, which is the two-electron reduced product of CO 2 , as a solar liquid fuel as well as a hydrogen storage material is discussed together with its use in direct formate fuel cells. Other CO 2 reduction products such as methanol and formaldehyde as solar liquid fuels as well as hydrogen storage materials are reviewed with the performance of the corresponding fuel cells. The production of nitrogen fixation products such as ammonia and hydrazine is also reviewed together with their fuel cells. Finally, the production of hydrogen peroxide from not only pure water but also seawater and dioxygen in the air using solar energy is discussed and combined with the recent development of one-compartment hydrogen peroxide fuel cells.

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Section: Direct Methanol Fuel Cellmentioning

confidence: 81%

Section: Direct Methanol Fuel Cellmentioning

confidence: 99%

Section: Direct Methanol Fuel Cellmentioning

confidence: 99%

Section: Direct Methanol Fuel Cellmentioning

confidence: 99%

See 2 more Smart Citations

Production of Liquid Solar Fuels and Their Use in Fuel Cells

Fukuzumi

2017

Joule

181

116

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“…The capability of solid electrolyte cells to convert ammonia was already shown in 1980 [36]. Since that time a growing interest in NH 3 fed SOFCs is observed [37][38][39][40][41]. Cell and elec-trode development for ammonia conversion is reported including proton conducting cells [42][43][44].…”

Section: Research On Fuel Flexibilitymentioning

confidence: 99%

Fuel flexibility of solid oxide fuel cells

Weber

2021

Fuel Cells

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One of the major advantages of SOFCs is their high fuel flexibility. Next to natural gas and hydrogen, which are today's most common fuels for SOFC-systems and cell-/stack-testing respectively, various other fuels are applicable as well. In the literature, a number of promising results show that available fuels as propane, butane, ammonia, gasoline, diesel etc. can be applied. Here, the performance of an anode supported cell operated in specialized single cell test benches with different gaseous and liquid fuels and reformates thereof is presented. Fuels as ammonia, dissolved urea (AddBlue TM ), methane/steam and ethanol/water mixtures can directly be fed to the cell, whereas propane and diesel require external reforming. It is shown that in case of a stable fuel supply the cell performance with such fuels is similar to that of appropriate mixtures of H 2 , N 2 , CO, CO 2 , and steam, if the impact of endothermic reforming or decomposition reactions is considered. Even though a stable fuel cell operation with such fuels is possible in a single cell test bench, it should be pointed out that an appropriate fuel processing will be mandatory on the system level.

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Challenges and Advancements in the Electrochemical Utilization of Ammonia Using Solid Oxide Fuel Cells

Zhang,

Xu,

et al. 2024

Advanced Materials

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Solid oxide fuel cells utilized with NH3 (NH3−SOFCs) have great potential to be environmentally friendly devices with high efficiency and energy density. The advancement of this technology is hindered by the sluggish kinetics of chemical or electrochemical processes occurring on anodes/catalysts. Extensive efforts have been devoted to developing efficient and durable anode/catalysts in recent decades. Although modifications to the structure, composition, and morphology of anodes or catalysts are effective, the mechanistic understandings of performance improvements or degradations remain incompletely understood. This review informatively commences by summarizing existing reports on the progress of NH3−SOFCs. It subsequently outlines the influence of factors on the performance of NH3−SOFCs. The degradation mechanisms of the cells/systems are also reviewed. Lastly, the persistent challenges in designing highly efficient electrodes/catalysts for low‐temperature NH3−SOFCs, and future perspectives derived from SOFCs are discussed. Notably, durability, thermal cycling stability, and power density are identified as crucial indicators for enhancing low‐temperature (550 °C or below) NH3−SOFCs. This review aims to offer an updated overview of how catalysts/electrodes affect electrochemical activity and durability, offering critical insights for improving performance and mechanistic understanding, as well as establishing the scientific foundation for the design of electrodes for NH3−SOFCs.

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Comparative study on ammonia oxidation over Ni-based cermet anodes for solid oxide fuel cells

Cited by 65 publications

References 39 publications

Production of Liquid Solar Fuels and Their Use in Fuel Cells

Production of Liquid Solar Fuels and Their Use in Fuel Cells

Fuel flexibility of solid oxide fuel cells

Challenges and Advancements in the Electrochemical Utilization of Ammonia Using Solid Oxide Fuel Cells

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