Synergistic enhancement of electrochemical performance in reversible solid oxide cells via deficiency-induced oxygen vacancy and nanoparticle generation

IF 9.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Rare Metals Pub Date : 2024-08-22 DOI:10.1007/s12598-024-02948-7

Meng-Yun Zhang, Yun-Feng Tian, Lu Zou, Jian Pu, Bo Chi

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Abstract

To enhance the electrochemical performance of the reversible solid oxide cell (RSOC), a facile way through adopting A-site deficient Pr_0.94BaCo_1.5Fe_0.5O_5+δ (PBCF94) as an air electrode for RSOC is reported. The designed A-site Pr-deficient air electrode is expected to provide abundant oxygen vacancies, macroscopic nanoparticle generation, excellent redox properties and oxygen mobility, which ultimately contribute to the enhanced electrocatalytic activity. The results confirm that the RSOC with an A-site deficient air electrode exhibits considerable peak power density up to 1.53 W·cm⁻², and the desirable electrolysis current density reaches 2.29 A·cm⁻² at 1.5 V and 800 °C. Correspondingly, the RSOC exhibits remarkable long-term reversible stability of 200 h. Thus, the A-site deficient Pr_0.94BaCo_1.5Fe_0.5O_5+δ air electrode could be the potential one for RSOC application.

Graphical abstract

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通过缺氧诱导氧空位和纳米粒子生成协同提高可逆固体氧化物电池的电化学性能

为了提高可逆固体氧化物电池（RSOC）的电化学性能，本研究报道了一种简便的方法，即采用缺A位的Pr0.94BaCo1.5Fe0.5O5+δ（PBCF94）作为RSOC的空气电极。所设计的 A 位缺镨空气电极可提供丰富的氧空位、宏观纳米粒子生成、优异的氧化还原特性和氧迁移率，最终有助于增强电催化活性。研究结果证实，在 1.5 V 和 800 °C 条件下，带有 A 位缺陷空气电极的 RSOC 的峰值功率密度高达 1.53 W-cm-2，理想的电解电流密度达到 2.29 A-cm-2。因此，缺乏 A 位的 Pr0.94BaCo1.5Fe0.5O5+δ 空气电极可能成为 RSOC 的潜在应用电极。

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来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.