浸渍LaNi0.6Fe0.4O3-δ纳米颗粒对Zr0.84Y0.16O2-δ-La0.8Sr0.2Cr0.5Fe0.5O3-δ透氧膜性能的影响

浸渍LaNi0.6Fe0.4O3-δ纳米颗粒对Zr0.84Y0.16O2-δ-La0.8Sr0.2Cr0.5Fe0.5O3-δ透氧膜性能的影响

TQ028.8; 采用流延–共压–共烧结法制备了具有多孔|致密|多孔Zr0.84Y0.16O2–δ-La0.8Sr0.2Cr0.5Fe0.5O3–δ(YSZ-LSCF)结构的透氧膜和多孔YSZ-LSCF|致密YSZ-LSCF|致密YSZ|致密YSZ-LSCF|多孔YSZ-LSCF结构的固体氧化物燃料电池.采用浸渍法在多孔层内壁上沉积了具有高催化活性的LaNi0.6Fe0.4O3–δ(LNF)纳米颗粒,随着LNF浸渍量的提高,会在多孔层内壁上形成连续的导电网格,增加电化学反应活性位点,进而显著改善电极性能.当LNF浸渍量为12wt％时,电极性能达到最优,在800℃时阴极和阳极极化阻抗分别为0.2...

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Veröffentlicht in:无机材料学报 2018, Vol.33 (1), p.14-18
Hauptverfasser: 刘雪娇, 何振宇, 吴昊, 骆婷, 孟夑, 陈初升, 占忠亮
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container_issue 1
container_start_page 14
container_title 无机材料学报
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creator 刘雪娇
何振宇
吴昊
骆婷
孟夑
陈初升
占忠亮
description TQ028.8; 采用流延–共压–共烧结法制备了具有多孔|致密|多孔Zr0.84Y0.16O2–δ-La0.8Sr0.2Cr0.5Fe0.5O3–δ(YSZ-LSCF)结构的透氧膜和多孔YSZ-LSCF|致密YSZ-LSCF|致密YSZ|致密YSZ-LSCF|多孔YSZ-LSCF结构的固体氧化物燃料电池.采用浸渍法在多孔层内壁上沉积了具有高催化活性的LaNi0.6Fe0.4O3–δ(LNF)纳米颗粒,随着LNF浸渍量的提高,会在多孔层内壁上形成连续的导电网格,增加电化学反应活性位点,进而显著改善电极性能.当LNF浸渍量为12wt％时,电极性能达到最优,在800℃时阴极和阳极极化阻抗分别为0.26和0.08?·cm2,在空气/CH4梯度中氧渗透速率为7.6 mL/(cm2·min),比未浸渍前提高了14倍.阻抗谱分析表明空气侧氧还原反应中的电荷转移反应是氧渗透过程的速率控制步骤.
doi_str_mv 10.15541/jim20170115
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title 浸渍LaNi0.6Fe0.4O3-δ纳米颗粒对Zr0.84Y0.16O2-δ-La0.8Sr0.2Cr0.5Fe0.5O3-δ透氧膜性能的影响
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