当前位置: X-MOL 学术ACS Mater. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
High-Entropy Perovskite Electrolyte for Protonic Ceramic Fuel Cells Operating below 600 °C
ACS Materials Letters ( IF 9.6 ) Pub Date : 2022-07-28 , DOI: 10.1021/acsmaterialslett.2c00542
Rui Guo 1 , Tianmin He 1
Affiliation  

High-entropy materials are attracting ever-increasing concern for their unique structural features and unprecedented potential applications. In this study, we design and successfully prepared single-phase high-entropy perovskite oxide (HEPO) BaSn0.16Zr0.24Ce0.35Y0.1Yb0.1Dy0.05O3−δ (BSZCYYbD) to use as a new class of proton conductor, which is first applied to protonic ceramic fuel cells (PCFCs) below 600 °C. The BSZCYYbD exhibits excellent chemical and structural stability, high densification, and mechanical properties. The protonic conduction in BSZCYYbD is proved by the proton-conductor isotope effect and hydration effect. The protonic conductivity of BSZCYYbD is the highest ever reached in the high-entropy proton conductors, which is 8.3 mS cm–1 in humidified air (3% H2O) at 600 °C. An anode-based PCFC with BSZCYYbD electrolyte (∼45 μm) demonstrates a favorable output of 318 mW cm–2 at 600 °C. Our study offers a strategy for the design of superior proton-conducting electrolytes based on HEPOs, which hold promise for diverse electrochemical applications.

中文翻译:

用于在 600 °C 以下运行的质子陶瓷燃料电池的高熵钙钛矿电解质

高熵材料因其独特的结构特征和前所未有的潜在应用而受到越来越多的关注。在本研究中,我们设计并成功制备了单相高熵钙钛矿氧化物(HEPO)BaSn 0.16 Zr 0.24 Ce 0.35 Y 0.1 Yb 0.1 Dy 0.05 O 3−δ(BSZCYYbD) 用作一种新型质子导体,它首先应用于 600 °C 以下的质子陶瓷燃料电池 (PCFC)。BSZCYYbD 具有优异的化学和结构稳定性、高致密性和机械性能。BSZCYYbD中的质子传导由质子导体同位素效应和水合效应证明。BSZCYYbD 的质子电导率是高熵质子导体中最高的,在 600 °C的加湿空气 (3% H 2 O) 中为 8.3 mS cm –1 。具有 BSZCYYbD 电解质(~45 μm)的基于阳极的 PCFC 表现出 318 mW cm –2的良好输出在 600 °C。我们的研究为设计基于 HEPO 的优质质子传导电解质提供了一种策略,它有望用于各种电化学应用。
更新日期:2022-07-28
down
wechat
bug