Materials and concepts for solid oxide fuel cells (SOFCs) in stationary and mobile applications

Weber, André; Ivers-Tiffée, Ellen

doi:10.1016/j.jpowsour.2003.09.024

Cited by 422 publications

(246 citation statements)

References 15 publications

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“…Besides solid electrolytes, suitable predominantly electronically (mixed ionic-electronic) conducting anode and cathode materials have to be developed. Present SOFCs are based on fluoritetype Y 2 O 3 -doped ZrO 2 (YSZ), perovskite-type, Sr-doped LaMnO 3 (LSM) cathodes and composite Ni-YSZ cermet anodes [9][10][11][12][13][14]17]. A critical problem is the high operating temperature (≈1,000°C) that is required for reasonably high oxide ion conduction of YSZ.…”

Section: General Considerationsmentioning

confidence: 99%

“…Table 1 lists the potential oxide electrolytes and comments on their technological problems with regard to their application in Fig. 1 Regime of electrical conductivity of solid electrolytes at room temperature as shown by the broken lines and compared with the electrical conductivities of typical metals, semiconductors, and insulators fuel cells [9][10][11][12][13][14][17][18][19][20][21][22][23][24][25]. Figure 2 shows the Arrhenius plots for the oxide ion conductivities of selected metal oxides [13].…”

Section: General Considerationsmentioning

confidence: 99%

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Recent progress in solid oxide and lithium ion conducting electrolytes research

Thangadurai

Weppner²

2006

Ionics

312

227

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Recent material developments of fast solid oxide and lithium ion conductors are reviewed. Special emphasis is placed on the correlation between the composition, structure, and electrical transport properties of perovskitetype, perovskite-related, and other inorganic crystalline materials in terms of the required functional properties for practical applications, such as fuel or hydrolysis cells and batteries. The discussed materials include Sr-and Mgdoped LaGaO 3 , Ba 2 In 2 O 5 , Bi 4 V 2 O 11 , RE-doped CeO 2 , (Li,La,)TiO 3 , Li 3 La 3 La 3 Nb 2 O 12 (M=Nb, Ta), and Na super-ionic conductor-type phosphate. Critical problems with regard to the development of practically useful devices are discussed.

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Section: General Considerationsmentioning

confidence: 99%

Section: General Considerationsmentioning

confidence: 99%

Recent progress in solid oxide and lithium ion conducting electrolytes research

Thangadurai

Weppner²

2006

Ionics

312

227

View full text Add to dashboard Cite

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“…Ni-doped ZrO 2 , Ni-doped CeO 2 ). Both electrolyte materials offer good chemical and thermal stability in oxidizing and reducing atmospheres and high oxygen ionic conductivity over a wide range of conditions [4,5]. Ni based cermet anodes are preferred due to their good combination of sufficient electrical conductivity and mechanical strength, as well as minimal chemical interaction with the electrolyte [6,7].…”

Section: Introductionmentioning

confidence: 99%

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

Wang¹,

Tomov²,

Mitchell-Williams³

et al. 2017

J Appl Electrochem

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The effect of inkjet printing infiltration of Gd 0.1 Ce 0.9 O 2-x in NiO-Gd 0.1 Ce 0.9 O 2-x anodes on the performance of symmetrical and button cells was investigated. The anodes were fabricated by inkjet printing of suspension and sol inks. Symmetrical cells were produced from composite suspension inks on Gd 0.1 Ce 0.9 O 2-x electrolyte. As-prepared scaffolds were infiltrated with Gd 0.1-Ce 0.9 O 2 ink. Increasing the number of infiltration steps led to formation of ''nano-decoration'' on pre-sintered anodes. High resolution SEM analysis was employed for microstructural characterization revealing formation of fine anode sub-structure with nanoparticle size varying in the range of 50-200 nm. EIS tests were conducted on symmetrical cells in 4% hydrogen/argon gas flow. The measurements showed substantial reduction of the activation polarization as a function of the number of infiltrations. The effect was assigned to the extension of the triple phase boundary. The i-V testing of a reference (NiO-8 mol% Y 2 O 3 stabilized ZrO 2 /NiO-Gd 0.1 Ce 0.9 O 2-x /Gd 0.1 Ce 0.9-O 2-x /Gd 0.1 Ce 0.9 O 2-x -La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-d ) cell and an identical cell with infiltrated anode revealed *2.5 times improvement in the maximum output power at 600°C which corresponded with the reduction of the polarization resistance of the symmetrical cells at the same temperature (2.8 times). This study demonstrated the potential of inkjet printing technology as an infiltration tool for cost effective commercial SOFC processing. Graphical abstract

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“…In several studies, the SMM powders were prepared using a sol gel technique with ethylenediaminetetraacetic acid as the chelating agent, and (NH 4 39) synthesized SMM powder by a solid-state reaction using SrCO 3 , MgO, and MoO 3 as starting materials. A disadvantage of this method is that it is difficult to produce fine powder using a high temperature firing processes, and their prepared powder included some SrMoO 4 impurities.…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity of Sr<sub>2</sub>MgMoO<sub>6−δ</sub> for solid oxide fuel cell anodes

Sasaki

Shin-mura

2017

J. Ceram. Soc. Japan

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A high purity powder of Sr 2 MgMoO 6¹¤ (SMM) was synthesized by a solid-state reaction under atmosphere-controlled conditions. The powder was sintered at a relatively low temperature (1200°C) to prepare compacts with high grain boundary density. SMM is a promising anode material for solid oxide fuel cells and hence, the samples were characterized under conditions relevant to this application. The electrical conductivity values of SMM under various oxygen partial pressures ( p O2 = 10 ¹15 10 4.3 Pa) over the temperature range of 300 850°C were measured by AC impedance spectroscopy. The grain boundary resistivity and bulk resistivity exhibited different oxygen-partial-pressure-dependent behavior. Electron conduction is proposed as the primary mechanism for electrical conductivity in the bulk of the sintered body of SMM under both low and high oxygen partial pressures. Electron conduction and oxygen ion conduction were found to be the primary mechanisms for electrical conductivity at the grain boundary of SMM under low and high oxygen partial pressures, respectively.

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Materials and concepts for solid oxide fuel cells (SOFCs) in stationary and mobile applications

Cited by 422 publications

References 15 publications

Recent progress in solid oxide and lithium ion conducting electrolytes research

Recent progress in solid oxide and lithium ion conducting electrolytes research

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

Electrical conductivity of Sr<sub>2</sub>MgMoO<sub>6−δ</sub> for solid oxide fuel cell anodes

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Materials and concepts for solid oxide fuel cells (SOFCs) in stationary and mobile applications

Cited by 422 publications

References 15 publications

Recent progress in solid oxide and lithium ion conducting electrolytes research

Recent progress in solid oxide and lithium ion conducting electrolytes research

Inkjet printing infiltration of Ni-Gd:CeO2 anodes for low temperature solid oxide fuel cells

Electrical conductivity of Sr<sub>2</sub>MgMoO<sub>6&minus;&delta;</sub> for solid oxide fuel cell anodes

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Product

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Electrical conductivity of Sr<sub>2</sub>MgMoO<sub>6−δ</sub> for solid oxide fuel cell anodes