Avoiding undesirable cathode/electrolyte interfacial reactions for proton-conducting solid oxide fuel cells by Joule heating

The co-firing stage is an unavoidable step in the fabrication process of solid oxide fuel cells (SOFCs), and avoiding unwanted interfacial reactions is crucial for cathode construction during the co-firing process. In this study, LiMn2O4 (LiMO), a traditional electrode material for Li-ion batteries, was discovered to have protonation and proton diffusion properties, showing significant promise as a cathode for proton-conducting SOFCs (H-SOFCs). However, obvious interactions between the LiMO cathode and BaCe0.7Zr0.1Y0.2O3−δ (BCZY) electrolyte can be identified during the co-firing process using the conventional sintering method, resulting in poor performance and making the use of LiMO in H-SOFCs challenging. To…

• NN
  National Natural Science Foundation of China

  Award: 52272216