National Taiwan Ocean University Institutional Repository:Item 987654321/49947
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题名: Novel Core-shell Structure of Perovskite Anode and Characterization
作者: Horng-Yi Chang
Shing-Hoa Wang
Yao-Ming Wang
Chien-Wei Lai
Chia-Hsin Lin
Syh-Yuh Cheng
贡献者: 國立臺灣海洋大學:輪機工程學系
关键词: Core–shell anode
Citric acid-based combustion
TPB
Electrocatalytic
Half-cell
日期: 2012-05
上传时间: 2018-09-04T02:48:23Z
出版者: International Journal of Hydrogen Energy
摘要: Abstract: The core–shell anode particulates are prepared with perovskite core of (Sr0.7La0.3)(Ti1−xNbx)O3 and the shell of multiple elements doped solid electrolyte (La0.75Sr0.2Ba0.05)0.175Ce0.825O1.891 (LSBC) by a citric acid-based combustion (SV) coating process. The ionic shell LSBC precedes the peak reduction–oxidation reaction temperature of the anode to 500 °C. The selected coverage ratio of 1.5 or 3.0 mol% LSBC shell on the core is used to ensure appropriate electrocatalytic activity and electronic conductivity. The core–shell anode increases the interface charge transfer (ReZ(i)) and chemical catalysis (ReZ(c)) that is revealed on the reduction of AC impedance. The lower slope of the voltage drop for the half-cell, which is composed of the core–shell anode, indicates the increasing effective triple phase boundary (TPB) sites and reduces the interface thermal expansion and lattice matching, as well as extends the ionic conduction path from LSBC electrolyte to the core–shell anode. The power density increases three times by using the core–shell structural anode than without using the core–shell anode in the half-cell.
關聯: 37(9) pp.7771-7778
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/49947
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