Synthesis and Characterization of La, Sc, Yb and Nd co-doped Gadolinium doped Cerium (GDC) Composite Electrolyte for IT-SOFC

Damisih,; Raharjo, Jarot; Masmui,; Aninda, Raffty Setya; Lestari, Novita Ami

doi:10.1088/1742-6596/877/1/012077

Cited by 5 publications

(1 citation statement)

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“…Solid oxide fuel cells (SOFCs) convert chemical energy directly into electrical energy with high efficiency and eco-friendly manner [1][2][3][4][5][6][7][8][9].However, in spite of these advantages, SOFC still has commercialization r elated problems such as its cost of fabrication at high temperature and durability [10][11][12][13]. One of the strategies which is supposed to be addressed to over come the bottle-neck of operating temperatures of SOFCs is finding an alternate solid electrolyte for intermediate temperature SOFCs (IT-SOFCs) [14][15][16].Ceria based oxides are explicitly being investigated for intermediate temperature applications due to their various advantages over ZrO 2 -based materials [17][18][19].Among the various dopants of ceria studied, samaria doped ceria (SDC) has received great attention as a potential IT-SOFC electrolyte due to its high ionic conductivity [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of as a solid electrolyte for intermediate-temperature solid oxide fuel cell

Eressa¹,

Rao²

2019

IJCTR

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Co-doped sample of electrolyte have been preparedby Solgel method and characterized to explore its use as a solid electrolyte for intermediate temperature solid oxide fuel cells (IT-SOFCs).The crystal structure, microstructure, and ionic conductivity have been determined by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray spectrometer (EDX), Raman Spectroscopy (Raman), and impedance spectroscopy, respectively. The XRD result reveals that the sample is single phase with cubic fluorite-type structure. The relative density of sample sintered at 1400 0 C isabout98% of theoretical density. The average grain size of sample found from SEM image is 451.4nm. The Raman spectra result showed formation of two distinctive peaks in the lattice. The peak at lower wavenumber (463) cm-1) can be attributed to F 2g vibration mode (O-Ce-O) of the fluorite-like structure of pure CeO 2. Besides, the peak at higher wavenumber (564) cm-1 can be ascribed to the oxygen vacancies extrinsically introduced into for maintaining the charge neutrality.The ionic conductivity and activation energy of found at 500 0 C was(5.95 x10-3 S/cm, Ea = 0.64eV) respectively. All the results confirmed that is a promising alternative electrolyte for intermediate temperature solid oxide fuel cell (IT-SOFC) applications.

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