Oxygen Electrode PrBa0.5Sr0.5Co1.5Fe0.5O5+δ-BaZr0.1Ce0.7Y0.1Yb0.1O3-δ with Different Composite Proportions for Proton-Conducting Solid Oxide Electrolysis Cells.
Oxygen Electrode PrBa0.5Sr0.5Co1.5Fe0.5O5+δ-BaZr0.1Ce0.7Y0.1Yb0.1O3-δ with Different Composite Proportions for Proton-Conducting Solid Oxide Electrolysis Cells.
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DOI：
10.1021/acsami.3c07638
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发表时间：
2023-08
影响因子：
9.5
通讯作者：
Huei-Yu Bai;Yanhong Zhang;Jiaming Chu;Qi Zhou;Haiyang Lan;Juan Zhou
中科院分区：
文献类型：
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作者：
Huei-Yu Bai;Yanhong Zhang;Jiaming Chu;Qi Zhou;Haiyang Lan;Juan Zhou
质子导电固体氧化物电解电池（H-SOEC）作为一种以质子导体氧化物为电解液的制氢装置，因其更适合中低温工况的诸多优点而备受关注。但其商业化迫切需要解决氧电极在低温下催化活性不足的问题。本文制备了PrBa0.5Sr0.5Co1.5Fe0.5O5+δ-BaZr0.1Ce0.7Y0.1Yb0.1O3-δ (PBSCF-BZCYYb)系列复合材料（分别为PBSCF- bzcyyb46、PBSCF- BZCYYb55和PBSCF- bzcyyb64，基于PBSCF和BZCYYb的质量比分别为4:6、5:5和6:4），并将其作为h - socs的氧电极。以PBSCF-BZCYYb46、PBSCF-BZCYYb55、PBSCF-BZCYYb64为氧电极，制备了具有PBSCF-BZCYYb|、BZCYYb|、NiO-BZCYYb（活性层）|、NiO-BZCYYb（支持层）结构的h - soec，记录为Cell 1、Cell 2、Cell 3。在650°C、1.3 V条件下，h - soec的电解电流密度分别为669.00、743.80和503.30 mA cm-2。在分别为179.5、152.8和83.0 h的恒压电解条件下，电池也表现出相当大的稳定性。通过各种电化学性能的比较，认为PBSCF-BZCYYb55是本工作中最有前途的氧电极材料。
Proton-conducting solid oxide electrolysis cell (H-SOEC), as a hydrogen production device using proton conductor oxides as an electrolyte, has gained attention due to its various advantages of being more suitable for operating conditions at intermediate and low temperatures. However, its commercialization urgently needs to address the issue of insufficient catalytic activity of the oxygen electrode at lower temperatures. In this work, PrBa0.5Sr0.5Co1.5Fe0.5O5+δ-BaZr0.1Ce0.7Y0.1Yb0.1O3-δ (PBSCF-BZCYYb) series composite materials (denoted as PBSCF-BZCYYb46, PBSCF- BZCYYb55, and PBSCF-BZCYYb64 based on the mass ratios of PBSCF and BZCYYb as 4:6, 5:5, and 6:4, respectively) are prepared and applied as oxygen electrodes for H-SOECs. The H-SOECs with the structure of PBSCF-BZCYYb|BZCYYb|NiO-BZCYYb (active layer)|NiO-BZCYYb (support layer) are prepared and recorded as Cell 1, Cell 2, and Cell 3 with PBSCF-BZCYYb46, PBSCF-BZCYYb55, and PBSCF-BZCYYb64 as oxygen electrodes. The H-SOECs exhibit electrolysis current densities of 669.00, 743.80, and 503.30 mA cm-2 under 1.3 V at 650 °C, respectively. The cells also show considerable stability in the constant voltage electrolysis of 179.5, 152.8, and 83.0 h, respectively. Through the comparison of various electrochemical properties, PBSCF-BZCYYb55 is considered the most promising oxygen electrode material in this work.