Combustion synthesized Nd2−xCexCuO4 (x=0–0.25) cathode materials for intermediate temperature solid oxide fuel cell applications

Khandale, A.P.; Bhoga, S. S.

doi:10.1016/j.jpowsour.2010.06.044

Cited by 35 publications

(30 citation statements)

References 25 publications

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“…These results suggested the charge transfer within the electrode as well as across the electrode-electrolyte interface was via hopping mechanism. Similar results have been reported in literature [10]. Plots of log (ASR) against 10 3 /T for cells with 70LSM:30GDC composite cathode having LSM prepared using different preparative techniques are depicted in Fig.…”

Section: Conductivitysupporting

confidence: 87%

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Effect of preparative methods on electrical and electrochemical performance of lanthanum strontium manganite

Nagde

Bhoga

2011

J Solid State Electrochem

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The electrochemical performance of La 0.8 Sr 0.2 MnO 3 : Ce 0.8 Gd 0.2 O 2 composite cathode was investigated for solid oxide fuel cell applications. Sol-gel, combustion, and solidstate syntheses yielded rhombohedral La 0.8 Sr 0.2 MnO 3 , whereas mechanochemical process gave cubic structure. X-ray diffraction results established good chemical stability of La 0.8 Sr 0.2 MnO 3 with Ce 0.8 Gd 0.2 O 2 composite cathode. Combustion synthesis was found best among all preparative methods on the basis of lowest area specific resistance 0.70 Ω cm 2 at 800°C. The activation energy E a =1.09±0.01 eV indicated absorption of O 2 and was the rate-limiting process of cathode.

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Section: Conductivitysupporting

confidence: 87%

“…The experimental procedures followed to determine DC conductivity as a function of temperature, and to evaluate electrochemical performance of composite cathode were similar to those described elsewhere [10].…”

Section: Mechanochemical Synthesismentioning

confidence: 99%

Effect of preparative methods on electrical and electrochemical performance of lanthanum strontium manganite

Nagde

Bhoga

2011

J Solid State Electrochem

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“…[ 415 ] In the following studies, several different strategies, such as combustion synthesis, mechanochemical preparation, microwave synthesis, ball-mill assisted solid-state synthesis and sol-gel synthesis, were performed for the synthesis of Nd 2-x Ce x CuO 4 material so as to optimize the corresponding electrode structure. [416][417][418][419][420] Among them, the lowest polarization resistance was obtained for the Nd 1.8 Ce 0.2 CuO 4 powder with uniform size and shape prepared by a sol-gel method. [ 420 ] Microstructure optimization of electrodes could also be realized through tuning the calcination temperature of electrode during the fabrication process.…”

Section: Sintering Optimizationmentioning

confidence: 99%

Advances in Cathode Materials for Solid Oxide Fuel Cells: Complex Oxides without Alkaline Earth Metal Elements

Chen

Zhou

Ding

et al. 2015

Advanced Energy Materials

254

155

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Solid oxide fuel cells (SOFCs) represent one of the cleanest and most efficient options for the direct conversion of a wide variety of fuels to electricity. For example, SOFCs powered by natural gas are ideally suited for distributed power generation. However, the commercialization of SOFC technologies hinges on breakthroughs in materials development to dramatically reduce the cost while enhancing performance and durability. One of the critical obstacles to achieving high‐performance SOFC systems is the cathodes for oxygen reduction reaction (ORR), which perform poorly at low temperatures and degrade over time under operating conditions. Here a comprehensive review of the latest advances in the development of SOFC cathodes is presented: complex oxides without alkaline earth metal elements (because these elements could be vulnerable to phase segregation and contaminant poisoning). Various strategies are discussed for enhancing ORR activity while minimizing the effect of contaminant on electrode durability. Furthermore, some of the critical challenges are briefly highlighted and the prospects for future‐generation SOFC cathodes are discussed. A good understanding of the latest advances and remaining challenges in searching for highly active SOFC cathodes with robust tolerance to contaminants may provide useful guidance for the rational design of new materials and structures for commercially viable SOFC technologies.

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“…The electrical conductivity was measured on sintered pellets in the temperature range 300~900ºC using the fourprobe method [20]. The current density-voltage curves were measured with a three probe method using electrochemical testing equipment (IM6e, Zahner, Germany).…”

Section: Methodsmentioning

confidence: 99%

Properties of Copper Doped Neodymium Nickelate Oxide as Cathode Material for Solid Oxide Fuel Cells

Lee¹,

Choe²,

Hwang³

2016

Archives of Metallurgy and Materials

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Mixed ionic and electronic conducting K2NiF4-type oxide, Nd2Ni1-xCuxO4+δ (x=0~1) powders were synthesized by solid state reaction technique and solid oxide fuel cells consisting of a Nd2Ni1-xCuxO4+δ cathode, a Ni-YSZ anode and ScSZ as an electrolyte were fabricated. The effect of copper substitution for nickel on the electrical and electrochemical properties was examined. Small amount of copper doping (x=0.2) resulted in the increased electrical conductivity and decreased polarization resistance. It appears that this phenomenon was associated with the high mean valence of nickel and copper and the resulting excess oxygen (δ). It was found that power densities of the cell with the Nd2Ni1-xCuxO4+δ (x=0.1 and 0.2) cathode were higher than that of the cell with the Nd2NiO4+δ cathode.

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Combustion synthesized Nd2−xCexCuO4 (x=0–0.25) cathode materials for intermediate temperature solid oxide fuel cell applications

Cited by 35 publications

References 25 publications

Effect of preparative methods on electrical and electrochemical performance of lanthanum strontium manganite

Effect of preparative methods on electrical and electrochemical performance of lanthanum strontium manganite

Advances in Cathode Materials for Solid Oxide Fuel Cells: Complex Oxides without Alkaline Earth Metal Elements

Properties of Copper Doped Neodymium Nickelate Oxide as Cathode Material for Solid Oxide Fuel Cells

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