SYNTHESIS OF DUAL PHASE CATHODE FOR IT SOFCs VIA THERMAL PLASMA

Download

index.pdf

Date

2018-09-10

Author

Aysal, Havva Eda
Sarı, Doğancan
Pişkin, Fatih
Öztürk, Tayfur

Metadata

Show full item record

Item Usage Stats

95
views

37
downloads

The combinatorial approach is particularly suitable for identification of suitable cathode materials. This involves a simultaneous deposition of thin film cathodes each with a different composition in a single experiment. The composition and microstructure of cathode materials has a large impact on the performance of solid oxide fuel cells (SOFCs). A main goal in SOFC research is the development of cathodes with a sufficiently low electrochemical resistance (- 0.15 Q.cm2) at operating temperatures significantly below 800°C. Focus has been shifted to particularly mixed conducting perovskites of the La I -xSncCo03-8 (LSC), Lal–xSniMnO3AZ (LSM), LaxSrl–xCoyFel–y03-8 (LSCF) family [1]. Since, Cnunl in et al.[2] and Sase et al. [3] exhibit improved electrochemical performance with hetero-structures [4]. Oxygen surface exchange was found to be enhanced at the heterointerface of LSC214/LSC113 [3]. It was recently shown that the sputter deposited (La0.8Sr0.2) Co03 (LSC-113) - (La0.5Sr0.5)2Co04 (LSC-214) dual phase cathode yield the best performance where the mixture had an amorphous-like structure [5]. In this study a composite cathodes LSC113- LSC214 and LSF-LSM were synthesized via thermal plasma using a large flow rate of quenching gas yielding non-equilibrium cathode powder. The purpose is to see if similar performance improvement could be obtained with plasma synthesized composite powders. The powders were screen printed onto suitable electrolytes and were characterized based on EIS responses using a symmetric cell under air. The typical EIS response at 500°C is given in Fig 1

URI

https://hdl.handle.net/11511/84553

Collections

Unverified, Conference / Seminar

Suggestions

OpenMETU
Core

Synthesis and Characterization of Surface Sulfonated Polypropylene Films Ecevit, Safiye Tuba; Aras, Leyla; Tincer, Teoman (Informa UK Limited, 2008-01-01) The basic reseach on the surface sulfonation of polypropylene (PP) is very important for design of surfaces for higher functionalization. For this purpose, liquid-phase sulfonation of polypropylene surfaces at various temperatures and different time periods was performed using concentrated sulphuric acid. The physical and chemical changes produced by the sulfonation on the polypropylene surfaces were determined by contact angle measurements, mechanical analysis, UV-Vis spectroscopy, differential scanning ca...
Synthesis and modification of titanosilicate ets-10: its role as host in host-guest systems İşler, Melda; Akata Kurç, Burcu; Turan, Raşit; Department of Micro and Nanotechnology (2014) An attractive method to create new molecular level electronic, optical and magnetic devices is to use solid host lattices that serve as templates within which a guest structure of nanometer architecture can be assembled. Zeolites and zeo-type materials with nanopores and cavities in 3-dimensions are known to represent a “New Frontier” of solid state chemistry with great opportunities for innovative research. Titanosilicate ETS-10, a microporous material, possessing two perpendicular channels, is an alternat...
Design of Microstrip Quadruplet Filters on Filpro Oruc, Sacid; Yıldırım, Nevzat (2018-11-02) In this paper, a simple dimensional design procedure is developed for microstrip/stripline quadruplet filters by starting with direct BP synthesis of a lumped quadruplet with inverter couplings, K14, K12, K23 and K34. K14 is the cross-coupling inverter which creates a symmetric pair of finite transmission zeros (FTZ's) if the sign of K14 is opposite of the other inverters while a complex TZ is created if K14 has the same sign as the other inverters leading to linear phase (flat delay) responses. The LC reso...
PRODUCTION AND CHARACTERIZATION OF Ti-Mg COMPOSITES FOR VARIOUS APPLICATIONS Bütev, Ezgi; Esen, Ziya; Dericioğlu, Arcan Fehmi (null; 2018-10-27) In the present study, a new type of Ti-Mg/AZ91 composite has been successfully manufactured using pressureless infiltration method to be used for structural and functional applications. Porous Ti6Al4V alloy skeleton structure was produced by loose powder sintering which was then filled with either liquid magnesium or AZ91 alloy at around 800 qC under high purity argon atmosphere in order to obtain Ti-Mg composites. Starting porous preforms contained 40 vol% open porosity, and nearly all of the pores were co...
Fabrication of nano- to micron-sized patterns using zeolites: Its application in BSA adsorption Kirdeciler, SALİH KAAN; Özen, Can; Akata, Burcu (2014-06-01) Nano to micron-sized zeolite A (Z-A) and silicalite (Z-SIL) patterns were generated using the combinations of electron beam lithography (EBL) or photolithography (PL) with direct attachment method to be able to generate differentiated areas on a single surface in a cheap and facile way. The possibility to generate minimum sized zeolite patterns on top of zeolite monolayers was investigated by using EBL to understand the capability of the system for the first time. Also generation of large scale zeolite patt...

Citation Formats

H. E. Aysal, D. Sarı, F. Pişkin, and T. Öztürk, “SYNTHESIS OF DUAL PHASE CATHODE FOR IT SOFCs VIA THERMAL PLASMA,” 2018, vol. 1, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/84553.