Boosting the Electrocatalytic Activity of Pr0.5Ba0.5FeO3-δ via Ni Doping in Symmetric Solid Oxide Electrolysis Cells

Yunfeng Tian; Yiyang Xue; Mengyun Zhang; Jian Wang; Xingbao Wang; Fangjun Jin; Yihan Ling; Jian Pu; Bo Chi

doi:10.1021/acs.jpclett.3c02345

Boosting the Electrocatalytic Activity of Pr_0.5Ba_0.5FeO_3-δ via Ni Doping in Symmetric Solid Oxide Electrolysis Cells

J Phys Chem Lett. 2023 Oct 26;14(42):9403-9411. doi: 10.1021/acs.jpclett.3c02345. Epub 2023 Oct 12.

Authors

Yunfeng Tian¹, Yiyang Xue¹, Mengyun Zhang², Jian Wang³, Xingbao Wang⁴, Fangjun Jin¹, Yihan Ling¹, Jian Pu², Bo Chi²

Affiliations

¹ School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China.
² School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
³ School of Energy and Environment, City University of Hong Kong, Hong Kong SAR, 999077, China.
⁴ State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China.

PMID: 37823837
DOI: 10.1021/acs.jpclett.3c02345

Abstract

Symmetric solid oxide electrolysis cells (SSOECs) have garnered significant scientific interest due to their simplified cell architecture, robust operational reliability, and cost-effectiveness, for which a highly electrocatalytically active electrode is the decisive main factor. This work evaluates the electrochemical performance of Ni-doped Pr_0.5Ba_0.5FeO_3-δ (PBF) perovskite materials, with a focus on Pr_0.5Ba_0.5Fe_0.8Ni_0.2O_3-δ (PBFN). The experimental findings herein prove the exceptional electrocatalytic ability of PBFN in facilitating the oxygen evolution and carbon dioxide reduction reaction, surpassing the electrochemical performance of PBF. In addition, the PBFN symmetric cell has excellent performance for CO₂ electrolysis, and the cell has a low polarization resistance value of 0.1 Ω·cm². Moreover, it achieves an impressive current density value of 1.118 A·cm^-² under operating conditions of 2.0 V and 800 °C, which is superior to those of the PBF symmetric cell and the PBFN asymmetric cell. It also has a good structural and performance stability. These results imply a bright development prospect of PBFN as electrodes for SSOECs.