A Novel High‐Entropy Perovskite Electrolyte with Improved Proton Conductivity and Stability for Reversible Protonic Ceramic Electrochemical Cells
7. Clean energy
01 natural sciences
3. Good health
0104 chemical sciences
DOI:
10.1002/adfm.202311426
Publication Date:
2023-11-27T23:33:13Z
AUTHORS (4)
ABSTRACT
Abstract Reversible protonic ceramic electrochemical cells (R‐PCECs) are emerging as highly efficient energy conversion devices, operating below 650 °C. The primary challenge in advancing R‐PCECs lies developing and stable proton‐conducting electrolytes capable of withstanding the chemical instability caused by common contaminants like CO 2 H O. Herein, a novel high‐entropy perovskite oxide (HEPO) material is introduced, incorporating six equimolar B‐site cations (BaHf 1/6 Sn Zr Ce Y Yb O 3‐δ , BHSZCYYb). total conductivity BHSZCYYb outperforms that examined HEPO other reported variants. Additionally, superior stability observed when exposed to . Utilizing microwave‐assisted sintering method, an R‐PCEC with electrolyte successfully fabricated. This cell exhibits maximum power density 1.151 W cm −2 (650 °C) fuel mode current 2.326 A at 1.3 V electrolysis mode. These results represent highest‐reported values for employing date provide valuable insights into development advancement HEPOs, holding great promise achieving high‐performance R‐PCECs.
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