Preparation and conducting behaviors of the Ln2(Zr,Ti)2O7 and LnDC oxides and carbonate composites

• Main Authors: Liang-Cheng Wen, 溫良成
• Other Authors: Huey-Chuen I. Kao
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/33488557407100515179

博士 === 淡江大學 === 化學學系博士班 === 101 === The purpose of this treatise is focused on the electrolyte part of solid oxide fuel cell (SOFC), and the structure refinement, electrical analysis and XANES spectra were be used in this research. The oxide materials in this research include (Y2-xLix)Ti2O7 -aLiO0.5 (a = 0, 2 and 4, x = 0 - 0.11; a = 1 and 3, x = 0.070) with abbreviation of YLT-aL, (Gd2-xLix)Ti2O7- aLiO0.5 (a = 0, 2 and 4, x = 0 - 0.15, a = 1 and 3, x = 0.100) with abbreviation of GLT-aL, Ln2Zr2O7 (Ln = Eu, Ho and Yb) with abbreviation of LZ, Ln2(ZrTi)O7 (Ln = Eu, Ho and Yb) with abbreviation of LZT and LnDC ((Ln0.2Ce0.8)O1.9) (Ln = La, Sm, Gd and Gd + Y). The LZ, LnZT and LnDC series were chosen to make composite electrolyte materials with LNCO carbonate mixture (The molar ratio of Li2CO3 : Na2CO3 = 1 : 1) and the abbreviations are LZ-C, LZT-C and LnDC-C, respectively. The YLT-2L (x = 0.070) has the highest total conductivity of 4.42(4) x 10-4 S