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自压压应力促进质子导电解质膜的密集

Liming Zhang^1,2, Qiuxia Feng^1,2, Peng Zhang¹

¹State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P.R. China.

Angewandte Chemie (International ed. in English)

|November 30, 2025

概括

一种新的自我压缩应力策略显著提高了固体氧化物细胞的质子导电陶电解质的密度. 这种方法降低了烧结温度,提高了导电性和电池性能.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
陶工程陶工程陶工程

背景情况:

密集不对称的陶膜对于固体氧化物细胞 (SOC) 和气体分离至关重要.
质子导电SOC在较低温度下提供高效的电力和生成.
高温烧结电解质如BaCe_0.7Zr_0.1Y_0.2O_3-δ (BCZY712) 会导致有害的元素挥发和分离,降低性能.

研究的目的:

引入一种自我压缩的应力策略,以提高BCZY712质子导电解质层的密度.
为了研究受控压力应激对电解质密度和性能的影响.
通过优化电解质制造,提高质子导体固体氧化物细胞的性能.

主要方法:

通过调节孔前含量和阳极基板预烧结温度来实施自我压缩应力策略.
在联合烧结过程中对BCZY712电解质层施加压力.
电解质的密度,微观结构和离子导电性的特征.

主要成果:

在降低的烧结温度下 (~150°C以下) 实现了BCZY712电解质层的~99%的相对密度.
有效地抑制了蒸发,Y₂O₃杂质分离和Ni迁移.
观察到电解质导电率增加了151%,SOC的峰值功率密度提高了89%.

结论:

自压应力策略是制造高密度质子导体陶电解质的可行方法.
降低的联合烧结温度显著减轻了性能限制的缺陷.
这种方法为能源应用增强固体氧化物电池性能提供了一条途径.

关键词:

压缩压力是压缩压力的压力.密集化是指密集化的过程.质子导电解质的电解质.烧结烧结烧结烧结是一种固体氧化物细胞固体氧化物细胞

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