Novel oxygen electrode materials based on cerium and praseodymium oxides for solid oxide fuel cell and electrolysis applications

摘要

The present manuscript deals with Pr2NiO_(4+δ), (PNO) based oxygen electrodes as the oxygen electrode for solid oxide fuel/electrolyser cells (SOFC/SOECs). The family of the nickelates (Ln2NiO_(4+δ) with Ln = Nd, La or Pr) have been widely investigated as they present high oxygen diffusion parameters, making them attractive as SOFC oxygen electrodes [1]. However, the main drawback of these nickelate phases is their reactivity with standard YSZ (yttria stabilized zirconia) or CGO (cerium gadolinium oxide) electrolytes, as typical sintering temperatures are usually higher than 1000 °C in order to get strong adhesion at the electrode/electrolyte interface.