Abstract
Most candidate proton conducting electrolytes are multi-elements perovskite consisting of barium in A site, thus substantially have challenges associated with high volatility of barium during high-temperature sintering process. Here, we describe a simple strategy to fabricate protonic ceramic cells (PCCs) with highly conductive proton electrolyte by minimizing barium volatilization through a low-temperature (1100oC) calcination process. The PCC is fabricated using low-temperature calcined electrolyte powder at which the minimum temperature to remove the barium carbonate phase. While the calcined powder consists of two phases, it becomes perfectly single phase with full density after final cosintering process (1400oC). This result implies that the status of initial electrolyte powder can significantly influence the overall cell characteristics.
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