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Pr4Ni3O10+δ: A new promising oxygen electrode material for solid oxide fuel cells

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Academic year: 2021

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Fig.  1.  (a)  Fullprof  refinement  of  the  XRD  patterns  at  25  and  1000  °C  using  Fmmm  space group, (b) variation of lattice parameters and (c) variation of (λ-λ 0 /λ 0 ) under air as  a function of temperature up to 1000 °C
Fig.  2.  (a)  TGA  plot  under  5%  Ar-H 2   for  the  determination  of  delta  value,  thermal  variation of weight loss under (b) air, (c) oxygen atmospheres and  (d) thermal variation  of the oxygen content (10+) under air and oxygen at 30 °C ≤ T ≤ 1
Fig. 3. X-ray diffractograms of Pr 4 Ni 3 O 10+δ  powder after 1 month ageing at 600, 700 and  800 °C under air
Fig.  4.  Thermal  variation  of  the  electrical  conductivity  of  Pr 4 Ni 3 O 10+δ   compared  with  PrNiO 3-δ  and Pr 2 NiO 4+δ , under air up to 800 °C
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