Montagem e caracterização elétrica de pilhas a combustível de óxido sólido (PaCOS)

Tarôco, Hosane Aparecida; Andrade, Samuel Tadeu de Paula; Brant, Márcia Caldeira; Domingues, Rosana Zacarias; Matencio, Túlio

doi:10.1590/s0100-40422009000500036

Cited by 11 publications

(8 citation statements)

References 27 publications

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“…values tend to increase with the addition of NiO. 25 Tarôco et al 27 studied the influence of current on the impedance spectrum. Due to the higher electron resistivity of the LSM (~10-4 Ω cm 2 at 800 C) relative to the ZEI/Ni cermet (~10-4 Ω cm 2 at 800 C), the cathode con- other perovskite cathode materials studied, but oxidizes the manganese ion according to Equation (2):…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Chemical synthesis of materials based on calcium zirconate for solid oxide fuel cells (SOFC)

Vieira

Nadaleti

Almeida

et al. 2019

Env Prog and Sustain Energy

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Fuel cells allow the production of energy from a clean electrochemical reaction. Among various types, the solid oxide fuel cell (SOFC) operates at high temperatures, allowing the conversion of hydrogen fuel into electricity, where water is generated as a by‐product. Strontium‐doped lanthanum manganite (La1‐xSrxMnO3, LSM) is commonly used as a cathodic material in traditional high‐temperature solid oxide fuel cells. Nowadays, the operating temperature of SOFCs should be reduced to 600–800°C due to improved fine electrolyte production techniques and the use of some intermediate temperature electrolytes. The LSM is not a suitable cathode for SOFCs operating in this temperature range, since it does not have a high enough conductivity and its electrochemical activity is very low as well. In this article, the performance improvement of LSM is described by mixing with calcium zirconate. The composite ceramic materials CaZrO3−La0.6Sr0.4MnO3, CaZrO3−NiO, and CaZrO3 were synthesized by combustion method, for application as a SOFC single cell. The results prove that the synthesized materials have potential to be used in a SOFC cell. At 800°C, was confirmed the CaZrO3 formation. Through Electrochemical impedance spectroscopy, the analysis presented low activation energy and the materials have been demonstrated to be compatible, an important fact to construct a suitable SOFC cell. The obtained activation energy was 0.90, 0.85, and 0.51 eV for the electrolyte, the anode and the cathode, respectively.

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Section: Scanning Electron Microscopymentioning

confidence: 99%

Chemical synthesis of materials based on calcium zirconate for solid oxide fuel cells (SOFC)

Vieira

Nadaleti

Almeida

et al. 2019

Env Prog and Sustain Energy

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“…Estas publicações têm ocorrido em revistas especializadas, tanto nacionais como internacionais. 28,34,41,106,107 Quanto às patentes, que indicam apropriação de tecnologia na área, já foram publicados 29 documentos. Estados Unidos, Japão e Espanha se destacam com 14, 8 e 8 patentes cada um, respectivamente.…”

Section: Reforma Interna Indireta Do Etanolunclassified

A utilização de etanol em célula a combustível de óxido sólido

et al. 2012

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Recebido em 31/8/11; aceito em 23/2/12; publicado na web em 15/6/12 THE USE OF ETHANOL IN SOLID OXIDE FUEL CELLS. This work reports a review on the status and technical feasibility of the application of ethanol as fuel for Solid Oxide Fuel Cells (SOFC), presenting both external reform and cell with direct utilization of ethanol. Based on this survey, both experimental results and mathematical modeling indicated the technical feasibility of power generation by ethanol SOFC, with cell units producing 450 mW/cm 2 , sufficient for scale up to large stationary plants. The quantitative assessments in the literature show this field to be promising for researchers and private sector investment as well being a strategic technology for government policy in the short and long term.

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“…The latter have chemical, physical, and mechanical properties far superior to traditional ceramics, such as biocompatibility, high hardness, high mechanical and thermal resistance, resistance to wear and corrosion, etc. Advanced ceramics are materials used in the manufacture of many high-tech products [3-6], which have applications in the health field, such as bioceramics [6][7][8], in the area electronics, such as functional ceramics (electroceramics, magnetic ceramics, and optical ceramics) [3,4,6,9,10], in energy conversion and storage, such as electrode materials, electrolytes, sealants and interconnectors [3,6,9,11,12]. They are also present in the home appliance, automotive, naval, and aeronautical industries due mainly to their thermal and mechanical properties [3,10].…”

mentioning

confidence: 99%

Importância dos materiais cerâmicos na nossa sociedade

Matencio

2020

Matéria (Rio J.)

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We can consider that there are currently four types of materials in materials science: metals and alloys, polymers, ceramics, and composites [1,2]. For most people, the word ceramics is only related to construction material (cement, bricks, floor or wall covering) and crockery. Indeed, the oldest traces of ceramic materials are fragments of crockery, based on clay, made in prehistoric china. This type of ceramic, which is part of the so-called traditional ceramics, consists mainly of silicates, which are combined compounds of silicon dioxide, SiO 2 , and other metal oxides such as Al 2 O 3 , CaO, K 2 O or MgO. From the middle of the last century on, with the technological development of new elaboration and characterization processes, innovative ceramic materials, called advanced or engineering ceramics, began to be developed, considerably increasing the area of applications of these materials. While traditional ceramics are made from natural materials, usually with clay, quartz, and feldspar, advanced ceramics have no silicates and are made from synthetic powders of oxides, nitrides, carbides, borides, carbides, etc. The latter have chemical, physical, and mechanical properties far superior to traditional ceramics, such as biocompatibility, high hardness, high mechanical and thermal resistance, resistance to wear and corrosion, etc. Advanced ceramics are materials used in the manufacture of many high-tech products [3-6], which have applications in the health field, such as bioceramics [6][7][8], in the area electronics, such as functional ceramics (electroceramics, magnetic ceramics, and optical ceramics) [3,4,6,9,10], in energy conversion and storage, such as electrode materials, electrolytes, sealants and interconnectors [3,6,9,11,12]. They are also present in the home appliance, automotive, naval, and aeronautical industries due mainly to their thermal and mechanical properties [3,10]. The science and technology of ceramic materials are essential in the development of our society, and research in this area has a fundamental role, as illustrated in Table 1, which presents some of the main topics currently investigated internationally [13].

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Montagem e caracterização elétrica de pilhas a combustível de óxido sólido (PaCOS)

Cited by 11 publications

References 27 publications

Chemical synthesis of materials based on calcium zirconate for solid oxide fuel cells (SOFC)

Chemical synthesis of materials based on calcium zirconate for solid oxide fuel cells (SOFC)

A utilização de etanol em célula a combustível de óxido sólido

Importância dos materiais cerâmicos na nossa sociedade

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