80 Hours operation of a tubular solid oxide fuel cell using propane/air

Chen, Yu; Lu, Michael L.; Yang, Haiqin; Yao, Yingbang; Tao, Tao; Lu, Sheng‐Guo; Wang, Chao; Ramesh, R.; Kendall, Michaela; Kendall, Kevin; Ouyang, Xiaoping; Liang, Bo

doi:10.1016/j.apenergy.2020.115099

Cited by 22 publications

(9 citation statements)

References 54 publications

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“…The μT‐SOFC is operated at 650°C and 700°C under several different hydrogen flow rates, measured using a thermocouple close to the cell. Moreover, the time course of the area‐specific resistance is measured at a constant density of 0.2 A/cm 2 over 5218 h of operation of the μT‐SOFC 33,34 …”

Section: Methodsmentioning

confidence: 99%

“…Moreover, the time course of the area-specific resistance is measured at a constant density of 0.2 A/cm 2 over 5218 h of operation of the μT-SOFC. 33,34 Figure 1 shows a schematic diagram of the μT-SOFC operated for 5218 h. The μT-SOFC has a diameter of 1.6 mm, a length of 15 mm, and an effective area of 75.40 mm 2 . The fuel gas first passes through the buffer layer impregnated on the inner wall of the μT-SOFC before entering the anode layer.…”

Section: Testing and Analysismentioning

confidence: 99%

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Ni‐phase erosion losses at a Ni‐pore interface of microtubular solid oxide fuel cells during 5218 h of operation

Liu,

Ye,

et al. 2023

Int J Applied Ceramic Tech

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A microtubular solid oxide fuel cell (μT‐SOFC) with an anode buffer layer in the inner wall of the anode is successfully fabricated. The anode buffer layer comprises nickel (Ni), gadolinium‐doped ceria, and ruthenium (Ru), of which Ru exhibits excellent stability in mixed impurity gases. At 700°C, the maximum power density of the μT‐SOFC reaches around 0.76 W/cm2 under a hydrogen flow rate of 10 sccm. After 5218 h of operation at a constant current density of 0.2 A/cm2 at 650°C, there is almost no degradation (0.093%/kh) in area‐specific resistance after 2000 h of operation under the protection of the anode buffer layer. The aggregation and migration of nanoscale Ni particles are observed at the Ni particle boundary near the triple‐phase boundary (TPB), with gradual corrosion of the Ni particles. Ni migration and loss in the TPB are determined as reasons for the decay of the fuel cells during their long‐term operation. Moreover, Ni in an amorphous state is also observed on the periphery of the Ni particles, indicating that during the corrosion process of Ni, transformation to the amorphous state occurred, which impairs the catalytic activity and electronic conductivity of Ni, resulting in a deterioration in its performance.

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Section: Methodsmentioning

confidence: 99%

Section: Testing and Analysismentioning

confidence: 99%

Ni‐phase erosion losses at a Ni‐pore interface of microtubular solid oxide fuel cells during 5218 h of operation

Liu,

Ye,

et al. 2023

Int J Applied Ceramic Tech

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“…Details of the preparation of the MT-SOFCs can be found in Chen et al. 7 The current collection design of the MT-SOFCs is shown in Fig. 2.…”

Section: Methodsmentioning

confidence: 99%

“…The internal reforming (IR) process does not require additional reactors, which can simplify the system composition and reduce its size, making the IR process especially suitable for compact applications. Previous studies have verified the feasibility of IR for methane, 22,23 propane, 7,23,24 butane, 23,24 liquefied petroleum gas (LPG), 23 and gasoline 25 in MT-SOFCs through experiments or simulations. A functional reforming catalyst layer is usually formed on the interior surface of the anode by means of impregnation or coating for fuel reforming conversion.…”

mentioning

confidence: 99%

“…The first category involves exposing the interior electrodes to the outside to collect current. These techniques usually leave small areas of the interior electrodes uncovered by the electrolyte in specific shapes, such as rings [7][8][9] and strips, 10 to act as current collection nodes. At the nodes, the current is collected with metal wire, foil, sheet, etc., allowing the currents of both electrodes to be collected on the outside of the tube at the same time.…”

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confidence: 99%

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A New Design Using Metal Wire Brushes as the Current Collector and Catalyst Carrier for Internal Reforming of Micro-Tubular SOFCs

Shi

Fan

Wang

et al. 2021

J. Electrochem. Soc.

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In this study, a novel current collecting method of inserting metal wire brushes into anode-supported micro-tubular solid oxide fuel cells (MT-SOFCs) was designed and demonstrated. The proposed design enabled a tight and stable contact between the wires and the interior surface of the anode, which led to good performance of the SOFC. Different metal wire materials were utilized, and copper–zinc wire brushes (CZWBs) showed better performance than stainless steel wire brushes (SSWBs). The MT-SOFCs using CZWBs achieved a maximum power density of 290 mW cm−2 and a minimum ohmic resistance of 0.66 Ω∙cm2 at 700 °C in a hydrogen stream. The brush size was shown to have little effect on the ohmic resistance. A long-term discharge test (108 h) was also carried out. The feasibility of using metal wire brushes as internal reforming catalyst carriers was experimentally verified. The SSWBs loaded with Pt catalyst could realize effective reforming of methane, demonstrating the potential of the proposed design to use hydrocarbon fuels for power generation.

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Advancements in Solid Oxide Fuel Cell Technology: Bridging Performance Gaps for Enhanced Environmental Sustainability

Li,

Cheng,

Zhang

et al. 2024

Adv Energy and Sustain Res

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In light of the anticipated 50% increase in global energy demand by 2050, the demand for innovative, environmentally conscious, efficient, and dependable energy technologies is paramount. Solid oxide fuel cells (SOFCs) offer a promising solution for sustainable energy production. This comprehensive review provides a detailed analysis of SOFCs, covering their fundamentals, materials, performance, and diverse applications, while also addressing technological challenges and future prospects. The review emphasizes the key advantages of SOFCs, including their high efficiency of up to 60% and minimal environmental impact. It explores the significance of impurity resistance and durability in materials and manufacturing processes for SOFC components. Comparative evaluations demonstrate the superior energy efficiency and ecological effects of SOFCs compared to other fuel cell technologies. SOFCs’ versatility and potential are showcased through their applications in transportation, power generation and storage, portable devices, and residential usage. However, challenges such as cost, longevity, reliability, and integration with other energy systems are identified, emphasizing the need for supportive policies and regulations.

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80 Hours operation of a tubular solid oxide fuel cell using propane/air

Cited by 22 publications

References 54 publications

Ni‐phase erosion losses at a Ni‐pore interface of microtubular solid oxide fuel cells during 5218 h of operation

Ni‐phase erosion losses at a Ni‐pore interface of microtubular solid oxide fuel cells during 5218 h of operation

A New Design Using Metal Wire Brushes as the Current Collector and Catalyst Carrier for Internal Reforming of Micro-Tubular SOFCs

Advancements in Solid Oxide Fuel Cell Technology: Bridging Performance Gaps for Enhanced Environmental Sustainability

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