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Analysis of nanofiber-based La0.2Sr0.8TiO3–Gd0.2Ce0.8O1.9 electrode kinetics
RSC Advances ( IF 3.9 ) Pub Date : 2018-10-18 00:00:00 , DOI: 10.1039/c8ra06522e Yuwei Wang 1 , Erqing Zhao 2 , Liquan Fan 1 , Qianjun Hu 3 , Xijun Liu 1 , Yufeng Li 1 , Yueping Xiong 3
RSC Advances ( IF 3.9 ) Pub Date : 2018-10-18 00:00:00 , DOI: 10.1039/c8ra06522e Yuwei Wang 1 , Erqing Zhao 2 , Liquan Fan 1 , Qianjun Hu 3 , Xijun Liu 1 , Yufeng Li 1 , Yueping Xiong 3
Affiliation
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For the sake of comparison, a single cell with nanofiber-based LST–GDC composite anode (Cell-1) and a single cell with nanoparticle-based LST–GDC composite anode (Cell-2) are fabricated, respectively. The electrolyte ohmic resistances of the LST–GDC composite anode side half-cells are determined by an AC resistance measurement. Current interrupt is applied to measure the ohmic resistance of the half-cells. Combined with V–I characteristics, the influences of the potential drops caused by electrolyte ohmic resistance, electrode ohmic resistance and electrode electrochemical reaction on the cell kinetics are investigated. Under a current density of 0.6 A cm−2 at 850 °C, for the nanofiber-based LST–GDC composite anode (NF-LST–GDC), the electrode ohmic potential drop is 0.007 V and the potential drop caused by the electrode electrochemical reaction is 0.080 V. While for the nanoparticle-based LST–GDC composite anode (NP-LST–GDC), the corresponding potential drops are 0.159 V and 0.246 V, respectively. Both the potential drops of the former are lower than those of the latter. The kinetics of Cell-1 is greater than Cell-2, i.e., the kinetics of NF-LST–GDC is greater than that of NP-LST–GDC.
中文翻译：
纳米纤维基La0.2Sr0.8TiO3–Gd0.2Ce0.8O1.9电极动力学分析
为了比较，分别制造了具有基于纳米纤维的LST-GDC复合阳极（Cell-1）的单电池和具有基于纳米颗粒的LST-GDC复合阳极（Cell-2）的单电池。LST-GDC 复合阳极侧半电池的电解质欧姆电阻由交流电阻测量确定。应用电流中断来测量半电池的欧姆电阻。结合V - I特性，研究了电解质欧姆电阻、电极欧姆电阻和电极电化学反应引起的电位降对电池动力学的影响。在0.6 A cm -2的电流密度下在 850 °C 时，对于纳米纤维基 LST-GDC 复合阳极 (NF-LST-GDC)，电极欧姆电位降为 0.007 V，电极电化学反应引起的电位降为 0.080 V。而对于纳米粒子-基于 LST-GDC 复合阳极 (NP-LST-GDC)，相应的电位降分别为 0.159 V 和 0.246 V。前者的潜在跌幅均低于后者。Cell-1的动力学大于Cell-2，即NF-LST-GDC的动力学大于NP-LST-GDC的动力学。
更新日期：2018-10-18
中文翻译：
纳米纤维基La0.2Sr0.8TiO3–Gd0.2Ce0.8O1.9电极动力学分析
为了比较，分别制造了具有基于纳米纤维的LST-GDC复合阳极（Cell-1）的单电池和具有基于纳米颗粒的LST-GDC复合阳极（Cell-2）的单电池。LST-GDC 复合阳极侧半电池的电解质欧姆电阻由交流电阻测量确定。应用电流中断来测量半电池的欧姆电阻。结合V - I特性，研究了电解质欧姆电阻、电极欧姆电阻和电极电化学反应引起的电位降对电池动力学的影响。在0.6 A cm -2的电流密度下在 850 °C 时，对于纳米纤维基 LST-GDC 复合阳极 (NF-LST-GDC)，电极欧姆电位降为 0.007 V，电极电化学反应引起的电位降为 0.080 V。而对于纳米粒子-基于 LST-GDC 复合阳极 (NP-LST-GDC)，相应的电位降分别为 0.159 V 和 0.246 V。前者的潜在跌幅均低于后者。Cell-1的动力学大于Cell-2，即NF-LST-GDC的动力学大于NP-LST-GDC的动力学。
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