Ce_(1-x)Gd_xO_(2-x/2)粉末的柠檬酸盐法合成及其固体氧化物燃料电池阳极的叠层法制备  

Ce_(1-x)Gd_xO_(2-x/2) Powders Synthesized by Citrate Method and Solid Oxide Fuel Cell Anode Prepared by Lamination

作　　者：王剑[1] 邵刚勤[1] 余晓华[1] 顾红星[1] 于娟娟[1] 李斌[1] 高珍[1] 

机构地区：[1]武汉理工大学,材料复合新技术国家重点实验室,武汉430070

出　　处：《硅酸盐学报》2011年第4期563-567,共5页Journal of The Chinese Ceramic Society

基　　金：国家重点实验室专项经费(2008-ZD-1)资助项目

摘　　要：采用柠檬酸盐法制备了Ce_(1-x)Gd_xO_(2-x/2)=0.05～0 3,摩尔分数)粉末。用水基流延成型法制备了NiO-Ce_(0.8)Gd_(0.2)O_(1.9)(NiO-GDC)阳极薄膜,以20片阳极薄膜在恒温轴压装置上叠层,再将叠层片在1450℃保温3h得到固体氧化物燃料电池阳极。结果表明:所有组分的粉末均为单相立方萤石结构;Ce_(1-x)Gd_xO_(2-x/2)的晶格常数与Gd^(3+)的掺杂量呈一定的线性关系;流延生坯具有较好的柔韧性;阳极经氢气还原后,孔隙率为38.3%,抗弯强度为104MPa。Ce_（1-x）Gd_xO_（2-x/2）（x = 0.05-0.3,mole fraction） powders were synthesized by a citrate method.A NiO-Ce_（0.8）Gd_（0.2）O_（1.9） （NiO-GDC） membrane was prepared by a water-based tape casting method.The anode fundus was fabricated from 20-layer membranes laminated in an isothermal axis-direction press and thereafter sintered at 1 450℃for 3 h.The results show that the powders were cubic fluorite structure.The lattice parameter increased with increasing Gd^（3＋） content.The green tape had a superior ductile behavior. After the anode was reduced by H_2,the porosity was 38.3%and the flexural strength reached 104 MPa.

关 键 词：钆掺杂氧化铈 柠檬酸盐法 固体氧化物燃料电池 叠层法 

分 类 号：TM911.4[电气工程—电力电子与电力传动]