Ultrafine, Dual-Phase, Cation-Deficient PrBa 0.8 Ca 0.2 Co 2 O 5+δ Air Electrode for Efficient Solid Oxide Cells.
Zhongwei YueLizhen JiangZhiyi ChenNa AiYuanfeng ZouSan Ping JiangChengzhi GuanXin WangYan-Qun ShaoHuihuang FangYu LuoKongfa ChenPublished in: ACS applied materials & interfaces (2023)
Nanostructured air electrodes play a crucial role in improving the electrocatalytic activity of oxygen reduction and evolution reactions in solid oxide cells (SOCs). Herein, we report the fabrication of a nanostructured BaCoO 3 -decorated cation-deficient PrBa 0.8 Ca 0.2 Co 2 O 5+δ (PBCC) air electrode via a combined modification and direct assembly approach. The modification approach endows the dual-phase air electrode with a large surface area and abundant oxygen vacancies. An intimate air electrode-electrolyte interface is in situ constructed with the formation of a catalytically active Co 3 O 4 bridging layer via electrochemical polarization. The corresponding single cell exhibits a peak power density of 2.08 W cm -2 , an electrolysis current density of 1.36 A cm -2 at 1.3 V, and a good operating stability at 750 °C for 100 h. This study provides insights into the rational design and facile utilization of an active and stable nanostructured air electrode of SOCs.
Keyphrases
- carbon nanotubes
- induced apoptosis
- ionic liquid
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- reduced graphene oxide
- gold nanoparticles
- quantum dots
- rna seq
- endoplasmic reticulum stress
- mass spectrometry
- cell death
- signaling pathway
- oxidative stress
- particulate matter
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- highly efficient
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- liquid chromatography
- metal organic framework