Sub-1000 °C Sintering of Protonic Ceramic Electrochemical Cells via Microwave-Driven Vapor Phase Diffusion.

ABSTRACT: Protonic ceramic electrochemical cells (PCECs) hold significant promise for efficient power generation and sustainable hydrogen production. However, their widespread adoption is hindered by the extreme sintering conditions required for electrolyte densification, often causing performance degradation due to Ba evaporation. Herein, microwave-driven vapor-phase diffusion sintering (MV-sintering) is introduced as an innovative approach for fabricating fully dense, stoichiometric electrolytes at a significantly reduced sintering temperature of 980 °C. This method demonstrates broad applicability across proton-conducting oxide electrolytes. The MV-sintered PCEC (MV-PCEC) achieves exceptional power densities of ≈2 W cm^-2 (600 °C) in fuel cell mode, alongside a remarkably high current d

SUBMITTER: Kim D 

PROVIDER: S-EPMC12574642 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature