Sintering-induced cation displacement in protonic ceramics and way for its 
suppression

Liu, Ze; Song, Yufei; Xiong, Xiaolu; Zhang, Yuxuan; Cui, Jingzeng; Zhu, Jianqiu; Li, Lili; Zhou, Jing; Zhou, Chuan; Hu, Z.; Kim, Guntae; Ciucci, Francesco; Shao, Zongping; Wang, Jian-Qiang; Zhang, Linjuan

doi:10.1038/s41467-023-43725-x

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Sintering-induced cation displacement in protonic ceramics and way for its suppression

MPS-Authors

/persons/resource/persons126666

Hu, Z.
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Liu, Z., Song, Y., Xiong, X., Zhang, Y., Cui, J., Zhu, J., Li, L., Zhou, J., Zhou, C., Hu, Z., Kim, G., Ciucci, F., Shao, Z., Wang, J.-Q., & Zhang, L. (2023). Sintering-induced cation displacement in protonic ceramics and way for its suppression. Nature Communications, 14(1):, pp. 1-10. doi:10.1038/s41467-023-43725-x.

引用: https://hdl.handle.net/21.11116/0000-000E-080D-C

要旨

Protonic ceramic fuel cells with high efficiency and low emissions exhibit high potential as next-generation sustainable energy systems. However, the practical proton conductivity of protonic ceramic electrolytes is still not satisfied due to poor membrane sintering. Here, we show that the dynamic displacement of Y3+ adversely affects the high-temperature membrane sintering of the benchmark protonic electrolyte BaZr0.1Ce0.7Y0.1Yb0.1O3−δ, reducing its conductivity and stability. By introducing a molten salt approach, pre-doping of Y3+ into A-site is realized at reduced synthesis temperature, thus suppressing its further displacement during high-temperature sintering, consequently enhancing the membrane densification and improving the conductivity and stability. The anode-supported single cell exhibits a power density of 663 mW cm−2 at 600 °C and long-term stability for over 2000 h with negligible performance degradation. This study sheds light on protonic membrane sintering while offering an alternative strategy for protonic ceramic fuel cells development. © 2023, The Author(s).