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Issue 62, 2018, Issue in Progress
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Analysis of nanofiber-based La0.2Sr0.8TiO3–Gd0.2Ce0.8O1.9 electrode kinetics

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Abstract

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 VI 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.

Graphical abstract: Analysis of nanofiber-based La0.2Sr0.8TiO3–Gd0.2Ce0.8O1.9 electrode kinetics

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Publication details

The article was received on 02 Aug 2018, accepted on 27 Sep 2018 and first published on 18 Oct 2018


Article type: Paper
DOI: 10.1039/C8RA06522E
Citation: RSC Adv., 2018,8, 35658-35663
  • Open access: Creative Commons BY-NC license
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    Analysis of nanofiber-based La0.2Sr0.8TiO3–Gd0.2Ce0.8O1.9 electrode kinetics

    Y. Wang, E. Zhao, L. Fan, Q. Hu, X. Liu, Y. Li and Y. Xiong, RSC Adv., 2018, 8, 35658
    DOI: 10.1039/C8RA06522E

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

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