Electrodos basados en Perovskita para pilas de combustible SOFC simétricas

santos‐García, Antonio J. Dos; Ruiz-Morales, J.C.; Canales‐Vázquez, Jesús

doi:10.3989/cyv.2008.v47.i5.165

Cited by 2 publications

(2 citation statements)

References 24 publications

(24 reference statements)

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“…[ 110,111 ] It was found that the structure of LSTF evolved from cubic to orthorhombic symmetries with increasing irondoping content, and this transformation accompanied an increase in electrical conductivity. [ 110,111 ] It was found that the structure of LSTF evolved from cubic to orthorhombic symmetries with increasing irondoping content, and this transformation accompanied an increase in electrical conductivity.…”

Section: Srtio 3 -Based Oxidesmentioning

confidence: 99%

“…Canales‐Vázquez et al evaluated the potential application of iron‐doped LST (LSTF) as the electrodes for symmetrical SOFCs . It was found that the structure of LSTF evolved from cubic to orthorhombic symmetries with increasing iron‐doping content, and this transformation accompanied an increase in electrical conductivity.…”

Section: Recent Developments In Electrode Materialsmentioning

confidence: 99%

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Progress and Prospects in Symmetrical Solid Oxide Fuel Cells with Two Identical Electrodes

Wang

Liu

et al. 2015

Advanced Energy Materials

143

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The increasing impact of the greenhouse effect and environmental pollution from excessive and low-effi ciency use of everdiminishing fossil fuels has urged us to develop new energy materials and technologies for transitioning to a sustainable infrastructure. With this in mind, fuel cells, based on a concept Symmetrical solid oxide fuel cells (SOFCs) have attracted increasing attention due to their potential for improved thermomechanical compatibility of the electrolyte and the electrodes, reduced fabrication cost, and enhanced immunity to coking and sulfur poisoning. While the electrode materials of symmetrical SOFCs are initially limited to those with stable phase structures under both reducing and oxidizing atmospheres, many novel electrode materials are currently being developed and investigated that may undergo a benefi cial phase transition or reduction in a reducing atmosphere, although the same material may be used initially for the construction of both anode and cathode. Here, the advances made in the development of electrode materials and structures for symmetrical SOFCs are summarized, including single-phase electrodes, multi-phase (composite) electrodes, and those that are reducible upon exposure to a reducing atmosphere. The electrical conductivity, thermomechanical properties, and redox behavior of these electrode materials, together with their performance and stability in different SOFCs, are discussed and analyzed. The problems associated with different types of symmetrical SOFCs are outlined and the materials that show promise as symmetrical electrodes are highlighted, offering critical insights and useful guidelines for knowledge-based rational design of better electrodes for commercially viable symmetrical SOFCs.

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Section: Srtio 3 -Based Oxidesmentioning

confidence: 99%

Section: Recent Developments In Electrode Materialsmentioning

confidence: 99%

Progress and Prospects in Symmetrical Solid Oxide Fuel Cells with Two Identical Electrodes

Wang

Liu

et al. 2015

Advanced Energy Materials

143

View full text Add to dashboard Cite

show abstract

Symmetric and reversible solid oxide fuel cells

et al. 2011

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In the past few years a novel concept of Solid Oxide Fuel Cells (SOFC) has been developed: the symmetrical Solid Oxide Fuel Cells (SSOFC). In this configuration, the same electrode material is used as anode and cathode. Several state-of-the-art SOFC electrode materials have been tested and optimised to operate in such a novel configuration, as is the case of the lanthanum chromites traditionally used as interconnect materials, lanthanum chromium manganites and strontium titanates generally used as anodes and lanthanum manganites typically used as cathodes. Fuel cell performances of approximately 800 mW cm 22 and y500 mW cm 22 under H 2 and CH 4 atmospheres have been obtained using some of these materials in symmetric configuration. Moreover, promising performances have also been reported for interconnect-based materials under city gas containing the impurity H 2 S. An interesting feature of the compositions evaluated is their potential use as symmetrical electrodes for Solid Oxide Electrolysis Cells (SOEC) with efficiencies in the range of the conventional SOEC systems, i.e. LSM-YSZ/YSZ/Ni-YSZ. Hence, they may be considered all-in-one Symmetric and Reversible SOFCs (SR-SOFCs) with significant advantages compared to traditional configurations, regarding both fabrication and maintenance/operation. In this review, we provide an insight into the most common materials tested as symmetrical electrodes for SOFCs and SOECs, electrolytes employed, configurations tested, new fabrication processes and procedures for microstructural engineering.

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Electrodos basados en Perovskita para pilas de combustible SOFC simétricas

Cited by 2 publications

References 24 publications

Progress and Prospects in Symmetrical Solid Oxide Fuel Cells with Two Identical Electrodes

Progress and Prospects in Symmetrical Solid Oxide Fuel Cells with Two Identical Electrodes

Symmetric and reversible solid oxide fuel cells

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