Enhanced activity and stability of Sr 2 FeMo 0.65 Ni 0.35 O 6-δ anode for solid oxide fuel cells with Na doping

Tutkimustuotos: Lehtiartikkelivertaisarvioitu


  • Tongtong Yao
  • Nianjun Hou
  • Juanjuan Gan
  • Jun Wang
  • Xiaojing Zhi
  • Lijun Fan
  • Tian Gan
  • Yicheng Zhao
  • Yongdan Li


  • Tianjin University
  • Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)


Sr 2-x Na x FeMo 0.65 Ni 0.35 O 6-δ is synthesized as an anode material for solid oxide fuel cells. The effects of Na on the crystalline phase and electrical properties are investigated. The main perovskite phase changes into a Ruddlesden-Popper structure after reduction when x is less than 0.1, while the material with a higher amount of Na keeps the perovskite structure. FeNi x alloy nanoparticles are exsolved during reduction, in which the content of Ni increases with the rise of Na amount. The surface oxygen vacancy concentration is also influenced by the doping of Na, and the highest value is reached when x is 0.1. Sr 1.9 Na 0.1 FeMo 0.65 Ni 0.35 O 6-δ anode exhibits the highest activity, and a single cell supported by a 300-μm-thick La 0.8 Sr 0.2 Ga 0.8 Mg 0.2 O 3-δ electrolyte layer shows maximum power densities of 1495 and 627 mW cm −2 at 850 °C with H 2 and wet CH 4 as fuels, respectively. The coking resistance of the anode is also improved with Na doping.


JulkaisuJournal of Power Sources
TilaJulkaistu - 15 kesäkuuta 2019
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 33282399