Development of Hydrogen-Permeable Metal Support Electrolysis Cells

Development of Hydrogen-Permeable Metal Support Electrolysis Cells
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透氢金属支撑电解槽的研制

DOI:
10.1021/acsaem.1c03313
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发表时间:
2022
影响因子:
6.4
通讯作者:
Habazaki Hiroki
Habazaki Hiroki
中科院分区:
材料科学3区
文献类型:
--
作者:
Aoki Yoshitaka;Nishimura Shinichi;Jeong SeongWoo;Kitano Sho;Habazaki Hiroki

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这项研究首次报道了具有 H+ 传导 BaZr0.1Ce0.7Y0.2O3−δ(BZCY) 电解质和 H 渗透 Pd 异质结的透氢金属支撑电解电池 (HMEC) 的开发。 HMEC可以在0.15 A cm-2下进行恒电流蒸汽电解; HMEC 保持约 1.2 V 的电压,并在 500 °C 时实现约 80% 的法拉第效率,高于具有多孔阴极和阳极的 H+ 传导陶瓷电解池的预测值。 HMEC 相对较高的效率可归因于 BZCY/Pd 异质界面附近的缺陷热力学平衡导致空穴载流子的减少。
This study is the first to report the development of hydrogen-permeable metal support electrolysis cells (HMECs) bearing a heterojunction of H+-conducting BaZr0.1Ce0.7Y0.2O3−δ(BZCY) electrolyte and H-permeable Pd. The HMECs could conduct galvanostatic steam electrolysis at 0.15 A cm–2; the HMECs maintained a voltage of ∼1.2 V and achieved a Faradaic efficiency of ∼80% at 500 °C, which are higher than the values predicted for H+-conducting ceramic electrolysis cells with porous cathodes and anodes. The relatively high efficiency of HMECs could be attributed to a decrease in the hole carriers due to the defect thermodynamic equilibria near the BZCY/Pd heterointerface.
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