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Träfflista för sökning "WFRF:(Raza Rizwan) ;pers:(Muhammed Mamoun)"

Sökning: WFRF:(Raza Rizwan) > Muhammed Mamoun

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1.
  • Ma, Ying, et al. (författare)
  • Thermal stability study of SDC/Na2CO3 nanocomposite electrolyte for low temperatur SOFCs
  • 2010
  • Ingår i: International journal of hydrogen energy. - : Elsevier BV. - 0360-3199 .- 1879-3487. ; 35:7, s. 2580-2585
  • Tidskriftsartikel (refereegranskat)abstract
    • The novel core-shell nanostructured SDC/Na2CO3 composite has been demonstrated as a promising electrolyte material for low-temperature SOFCs. However, as a nanostructured material, stability might be doubted under elevated temperature due to their high surface energy. So in order to study the thermal stability of SDC/Na2CO3 nanocomposite, XRD, BET, SEM and TGA characterizations were carried on after annealing samples at various temperatures. Crystallite sizes, BET surface areas, and SEM results indicated that the SDC/Na2CO3 nanocomposite possesses better thermal stability on nanostructure than pure SDC till 700 °C. TGA analysis verified that Na2CO3 phase exists steadily in the SDC/Na2CO3 composite. The performance and durability of SOFCs based on SDC/Na2CO3 electrolyte were also investigated. The cell delivered a maximum power density of 0.78 W cm-2 at 550 °C and a steady output of about 0.62 W cm-2 over 12 h operation. The high performances together with notable thermal stability make the SDC/Na2CO3 nanocomposite as a potential electrolyte material for long-term SOFCs that operate at 500-600 °C.
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2.
  • Wang, Xiaodi, et al. (författare)
  • Novel core-shell SDC/amorphous Na2CO3 nanocomposite electrolyte for low-temperature SOFCs
  • 2008
  • Ingår i: Electrochemistry communications. - : Elsevier BV. - 1388-2481 .- 1873-1902. ; 10:1, s. 1617-1620
  • Tidskriftsartikel (refereegranskat)abstract
    • Novel core-shell SDC (Ce0.8Sm0.2O1.9)/amorphous Na2CO3 nanocomposite was prepared for the first time. The core-shell nanocomposite particles are smaller than 100 nm with amorphous Na2CO3 shell of 4-6 nm in thickness. The nanocomposite electrolyte shows superionic conductivity above 300 °C, where the conductivity reaches over 0.1 S cm-1. Such high conductive nanocomposite has been applied in low-temperature solid oxide fuel cells (LTSOFCs) with an excellent performance of 0.8 W cm-2 at 550 °C. A new potential approach of designing and developing superionic conductors for LTSOFCs was presented to develop interface as 'superionic highway' in two-phase materials based on coated SDC.
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  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
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refereegranskat (2)
Författare/redaktör
Raza, Rizwan (2)
Zhu, Bin (2)
Muhammed, Mamoun (2)Ta bort avgränsningen
Ma, Ying (2)
Wang, Xiaodi (2)
Lärosäte
Kungliga Tekniska Högskolan (2)
Språk
Engelska (2)

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