Development of solid oxide fuel cells based on a Ce(Gd)O2−x electrolyte film for intermediate temperature operation

Sahibzada, M.; Steele, B.C.H.; Zheng, K.; Rudkin, R.A.; Metcalfe, Ian S.

doi:10.1016/s0920-5861(97)00055-2

Cited by 115 publications

(63 citation statements)

References 7 publications

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“…CeO 2 -based materials have various applications such as three-way catalysts (TWC), fuel cell processes, catalytic wet oxidation, de-SOx catalysis, hybrid-solar cell etc. (Dong et al, 2004b;Sahibzada et al, 1997;Larachi et al, 2002;Trovarelli et al, 1999;Lira-Cantu and Krebs, 2006). Band gap of ceria is 3.1 eV as reported by many researchers which is transparent to the visible light and absorbing only UV light from the solar spectrum where only 5 % solar light is available (Imanaka et al, 2003;Reddy et al, 2009).…”

Section: Introductionmentioning

confidence: 84%

Fabrication of iron-cerium mixed oxide: an efficient photocatalyst for dye degradation

Pradhan¹,

Parida²

2011

Int. J. Eng. Sci. Tech

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We report herein the fabrication of nanostructured and mesoporous iron-cerium mixed oxides for photocatalytic application. Phase, electronic structure and other properties of the products were characterized by both low-angle and wide-angle X-ray diffraction, diffuse reflectance spectroscopy, transmission electron microscopy, raman spectroscopy, X-ray photoelectron spectroscopy, and N 2 adsorption-desorption isotherm methods. Analytical results demonstrate that the catalyst is in the nano order and mesoporous in nature. These samples were screened for photocatalytic degradation of phenol, methylene blue (MB) and congo red (CR). About 13 % (phenol) and 93 % (MB) photodegradation were observed where as complete mineralization was obtained in case of CR. The reason for higher catalytic activity of 1:1 (Fe/Ce) sample is ascribed to their higher surface area, surface acidity which determines the active sites of the catalyst and accelerates the photocatalytic reaction.

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Section: Introductionmentioning

confidence: 84%

Fabrication of iron-cerium mixed oxide: an efficient photocatalyst for dye degradation

Pradhan¹,

Parida²

2011

Int. J. Eng. Sci. Tech

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“…Furthermore, it is also used in the removal of water pollutants [3], as an additive in combustion catalysts [4] and in fuel cell technology [5]. The application of CeO 2 in many catalytic processes is based on its unique properties such as: i) the capacity to strongly interact with noble metals after reduction at relatively high temperatures (SMSI effect); ii) beneficial effect on the stabilization of small supported noble metal particles; and iii) the ability to increase the thermal stability of alumina supports.…”

Section: Introductionmentioning

confidence: 99%

Effect of the presence of chlorine in bimetallic PtZn/CeO2 catalysts for the vapor-phase hydrogenation of crotonaldehyde

Silvestre-Albero

Coloma

Sepúlveda-Escribano

et al. 2006

Applied Catalysis A: General

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The effect of the reduction temperature has been studied on ceria-supported bimetallic platinum-zinc catalysts prepared from H 2 PtCl 6 and Pt(NH 3 ) 4 (NO 3 ) 2 as the platinum precursors and Zn(NO 3 ) 2 as the zinc precursor. The catalysts have been characterized by X-ray diffraction (XRD), temperature-programmed reduction (TPR), and X-ray photoelectron spectroscopy (XPS), and their catalytic behavior has been evaluated in the vapor-phase hydrogenation of toluene and of crotonaldehyde (2-butenal) after reduction at low (473 K) and high (773 K) temperatures. The increase in the reduction temperature produces a strong decrease in the catalytic activity for toluene hydrogenation in both systems, but an important increase of activity for crotonaldehyde hydrogenation, which is more evident for the chlorine-free catalyst. The selectivity towards the hydrogenation of the carbonyl bond to yield the unsaturated alcohol (crotyl alcohol, 2-buten-1-ol) also increases after reduction at high temperature, being somewhat higher for the Cl-containing catalyst. The results are discussed in terms of differences in surface composition of the catalysts.

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“…Co-doping of GDC by small amount of TiO 2 also reduces the grain-boundary resistance [158]. The most widely studied 10GDC and 20GDC electrolytes [159][160][161][162] have been tested in fuel cell environment and reported to result in a good open circuit voltage [127,163,164].…”

Section: Scandia-stabilized Zirconiamentioning

confidence: 99%

“…The thickness of the GDC electrolyte has also been reduced below a few microns in order to optimize its oxygen ionic conductivity [163,[172][173][174][175][176][177][178]. These GDC thin film electrolytes have been fabricated by different deposition techniques including MBE [172], PLD [173,177,179,180], magnetron sputtering [133,175,181,182], chemical vapor deposition (CVD) [183][184][185], electron beam vapor deposition [186], spray techniques [174,187], solid state reaction [176], tape casting [163], spin coating [178], and sol-gel process [188].…”

Section: Gadolinia-doped Ceriamentioning

confidence: 99%

State-of-the-Art Thin Film Electrolytes for Solid Oxide Fuel Cells

Nandasiri

Thevuthasan

2015

Thin Film Structures in Energy Applications

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State-of-the-art solid oxide fuel cells (SOFC) are among the main candidates for clean energy technology due to their high efficiency, fuel flexibility, low air pollution, and minimal greenhouse gas emission. However, high operational temperature of SOFC is a greater challenge in commercialization of these devices for low cost and portable applications. High temperature operation of SOFC degrades its performance with aging, limits the selection of materials for fuel cell components, and increases the fabrication cost. Thus, there have been enormous efforts to improve the properties of existing materials and develop new materials for SOFC components in order to lower the operating temperature of SOFC. Recent advances in thin film technology have also been utilized to develop new materials with improved properties for SOFC. One of the key components in SOFC is the electrolyte and several research groups are working on developing new electrolyte materials. In this chapter, we will discuss the recent advances in thin film SOFC electrolytes. This extensive discussion includes the evolution of doped ceria, doped zirconia, and multilayer hetero-structured thin film electrolytes. The newly developed nanoscale thin films and multilayer hetero-structures with improved oxygen ionic conductivity will have significant impact on SOFC devices. Introduction Background of Solid Oxide Fuel Cells (SOFC)The latest U.S. energy reviews revealed that more than 80 % of the energy consumed in the world is still produced by non-renewable energy sources such as petroleum, natural gas, and coal [1]. Moreover, it is projected that world energy consumption will grow by 56 % from 2010 to 2040. Therefore, from a long-term energy perspective, clean energy technologies are needed to utilize primary energy

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Development of solid oxide fuel cells based on a Ce(Gd)O2−x electrolyte film for intermediate temperature operation

Cited by 115 publications

References 7 publications

Fabrication of iron-cerium mixed oxide: an efficient photocatalyst for dye degradation

Fabrication of iron-cerium mixed oxide: an efficient photocatalyst for dye degradation

Effect of the presence of chlorine in bimetallic PtZn/CeO2 catalysts for the vapor-phase hydrogenation of crotonaldehyde

State-of-the-Art Thin Film Electrolytes for Solid Oxide Fuel Cells

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