摘要
通过流延浸渍法制备Cu-CeO_2-YSZ阳极,采用淀粉做造孔剂,确定了多孔YSZ基体的制备工艺,主要包括造孔剂用量及流延浆料配比。并通过复合流延制备多孔YSZ支撑的多孔-YSZ/致密-YSZ复合基体,以Pt浆为阴极,通过电池放电考察了氢气条件下多孔YSZ孔隙率、Ce和Cu的浸渍条件等对Cu-CeO_2-YSZ阳极性能影响。结果表明,原料中淀粉含量为65%(质量分数),1500℃烧结6h得到多孔YSZ孔隙率可达到70%左右。采用真空顺次浸渍法制备20%Cu-10%CeO_2-YSZ(质量分数)阳极,其电池800℃时的最大功率密度为113 mW/cm^2。
Cu-CeO2-YSZ anode was prepared by tape casting and impregnating. With the starch as pore-forming agent, the technology of making porous YSZ was determined including pore-forming agent content and proportions of tape casting slurry. Porous-YSZ/density-YSZ compound substrate with porous-YSZ support was obtained by compound tape casting. Then, Pt as the cathode, the effects of porous-YSZ porosity and impregnation condition on anode performance was discussed through the charge characteristics of fuel cells under the H2 condition. The porosity of porous-YSZ could achieve to 70% after sintering for 6 h at 1500 ℃, when pore former volume fractions was 65wt% in materials. Under the vacuum condition, 20wt%Cu-10wt%CeO2-YSZ anodes was prepared by orderly impregnating Ce（NO3）3 and Cu（NO3）2. The maximal powder density of the cell with this anode was up to 113 mW/cm^2 at 800 ℃.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A03期113-116,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(90510006)
