Design and Fabrication of Lightweight, Submillimeter Tubular Solid Oxide Fuel Cells

Suzuki, Toshio; Funahashi, Yoshihiro; Yamaguchi, Toshiaki; Fujishiro, Yoshinobu; Awano, Masanobu

doi:10.1149/1.2739211

Cited by 69 publications

(36 citation statements)

References 16 publications

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“…Maximum power densities of LSGM-based tubes amounted to 482 mW/cm 2 at 800°C for 220 μm-thick electrolyte tubes. Anode-supported cells (ASC) were reported by Nguyen [3], Sarkar [4], Funahashi [5] and Suzuki [6]. Maximum power outputs reached up to 1017 mW/cm 2 at 550°C [6].…”

Section: Introductionmentioning

confidence: 99%

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Cathode-supported micro-tubular SOFCs based on Nd1.95NiO4+δ: Fabrication and characterisation of dip-coated electrolyte layers

et al. 2009

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a b s t r a c t a r t i c l e i n f o (SSZ) were applied by dip-coating in aqueous suspensions. Electrolyte powders had been attrition-milled to decrease their particle size and densification temperature. The quantity of polyacrylic acid (PAA) as dispersant was optimised by ζ-potential measurements. The densification behaviour was studied by dilatometry and SEM-imaging. A sintering temperature of 1250°C was found to densify GDC whereas SSZlayers remained slightly porous.

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Section: Introductionmentioning

confidence: 99%

“…Anode-supported cells (ASC) were reported by Nguyen [3], Sarkar [4], Funahashi [5] and Suzuki [6]. Maximum power outputs reached up to 1017 mW/cm 2 at 550°C [6]. ASC are advantageous for electrolyte densification, as the employed sintering temperature of ca.…”

Section: Introductionmentioning

confidence: 99%

Cathode-supported micro-tubular SOFCs based on Nd1.95NiO4+δ: Fabrication and characterisation of dip-coated electrolyte layers

et al. 2009

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“…On the other hand, microstructure tuning of the electrodes can play an important role in reducing the polarization resistance. 27,28 It is also to be noted that the YSZ support in the present study was relatively thick (∼550 μm) to ensure its good mechanical strength. However, the use of partially stabilized zirconia such as 3 mol% YSZ (3YSZ), which is known for its better mechanical strength, 29 could be considered for reducing the support thickness without compromising its porosity.…”

Section: Resultsmentioning

confidence: 77%

Fabrication and Evaluation of a Micro-Tubular Solid Oxide Fuel Cell with an Inert Support Using Scandia-Stabilized Zirconia Electrolyte

Panthi

Choi

Tsutsumi

2015

J. Electrochem. Soc.

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We have proposed a novel micro-tubular solid oxide fuel cell (SOFC) design with an inert support and an integrated current collector for the inner electrode to improve current collection efficiency as well as reduction-oxidation stability of the cell. In this work, a micro-tubular SOFC based on the proposed design was fabricated using scandia-stabilized zirconia (ScSZ) as electrolyte owing to its high ionic conductivity over a wide range of temperatures. Yttria-stabilized zirconia (YSZ), Ni, Ni-ScSZ, strontium-doped lanthanum manganite (LSM)-ScSZ, and LSM were used as the inert support, anode current collector, anode, cathode, and cathode current collector, respectively. The electrochemical performance of the fabricated cell was evaluated at temperatures between 600 and 850 • C. Because of the lower ohmic resistance across its components, the cell exhibited good power generation performance at high and intermediate temperatures. Solid oxide fuel cells (SOFCs) are high-temperature electrochemical energy conversion devices that have attracted increased attention in recent decades owing to their high power generation efficiency and environmentally benign operation.1,2 In contrast with low-temperature fuel cells such as polymer electrolyte membrane fuel cells (PEMFCs) and alkaline fuel cells (AFCs), SOFCs can be operated with both hydrogen and hydrocarbon fuels, and they are also tolerant toward several fuel contaminants.3-5 Additionally, the high-quality exhaust heat obtained from SOFCs can be used for combined cycle and cogeneration applications, which increases the system efficiency significantly. [6][7][8] Among different SOFC designs, the micro-tubular design possesses some unique characteristics. By combining the merits of a tubular geometry and smaller size, micro-tubular SOFCs offer easy sealing, high volumetric power density, good thermo-cycling behavior, and high thermal shock resistance. 1,9 Owing to their ability for rapid startup and shutdown, micro-tubular SOFCs have gained considerable interest for their use in mobile applications in addition to the traditionally considered stationary applications. 10,11 However, one of the major problems with conventional micro-tubular SOFCs is their poor current collection efficiency. 12,13 This problem arises from the small cell diameter that prevents the use of current-collecting elements such as wires and meshes to collect current from the entire inner electrode surface. As a result, current-collecting elements have to be applied to the exposed end(s) of the inner electrode, which increases the current conduction path and thus the ohmic resistance. This limits active cell length to few centimeters or less so as to keep the ohmic resistance in the cell within an acceptable range.12 In addition, stability of the cell performance under reduction-oxidation (redox) cycling conditions is a crucial issue for conventional micro-tubular SOFCs that contain state-of-the-art Ni-yttria-stabilized zirconia (YSZ) anode supports.14-16 Ni particles in the anode support may oxidiz...

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“…Authors also developed anodesupported microtubular SOFCs for low operating temperatures. 39)41) On the other hand, Park and Virker 42) prepared the oxide substrate of Fe 2 O 3 NiO composite. The NiO-GDC anode, GDC electrolyte and (La,Sr)CoO 3¤ -GDC cathode were formed on the oxide substrate by conventional ceramic manufacturing processes including high temperature sintering process.…”

Section: )mentioning

confidence: 99%

Metal-supported microtubular solid oxide fuel cells with ceria-based electrolytes

Sumi

Shimada

Yamaguchi

et al. 2017

J. Ceram. Soc. Japan

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Metal-supported solid oxide fuel cells (SOFCs) are expected to lower operating temperature and improve reliability. The residual crushing strength and electrical conductivity of porous metallic nickel microtubes were higher than those of nickel-gadoliniadoped ceria (Ni-GDC) cermets. The maximum power density of the metal-supported microtubular SOFC with GDC electrolyte was approximately three times higher than that of a conventional anode-supported microtubular SOFC with yttria-stabilized zirconia electrolyte at a relatively low temperature of 550°C. The metal-supported microtubular SOFCs have a potential to be applied not only in stationary devices, such as residential combined heat/power systems, but also in portable power sources and vehicles.

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Design and Fabrication of Lightweight, Submillimeter Tubular Solid Oxide Fuel Cells

Cited by 69 publications

References 16 publications

Cathode-supported micro-tubular SOFCs based on Nd1.95NiO4+δ: Fabrication and characterisation of dip-coated electrolyte layers

Cathode-supported micro-tubular SOFCs based on Nd1.95NiO4+δ: Fabrication and characterisation of dip-coated electrolyte layers

Fabrication and Evaluation of a Micro-Tubular Solid Oxide Fuel Cell with an Inert Support Using Scandia-Stabilized Zirconia Electrolyte

Metal-supported microtubular solid oxide fuel cells with ceria-based electrolytes

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