Ionic conduction in apatite solid solutions

被引：0

作者：

Yamashita, Kimihiro ^{[1
]}

Owada, Hitoshi ^{[1
]}

Umegaki, Takao ^{[1
]}

Kanazawa, Takafumi ^{[1
]}

Futagami, Toshiro ^{[1
]}

机构：

[1] Tokyo Metropolitan Univ, Japan

来源：

Solid State Ionics | 1988年 / 28-30卷

关键词：

Biomaterials; -; Crystals--Structure; Electrolytes; Solid - Fuel Cells--Electrolytes - Solid Solutions--Electric Conductivity;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Considering the respect that hydroxyl ions are generally approved to be the dominant charge carriers in hydroxyapatite, a well-known bio-material, apatite ceramics can be anticipated to work as electrolytes for high temperature-fuel cells. In the present work, it was studied how the changes of OH- lattice sites of the hexagonal structure influence the conduction characteristics. The change in OH- lattice sites was introduced by the formation of apatite solid solutions Ca2+-substituted with various cations such as Na+, Sr2+, Y3+ and La3+. The most pronounced effect on conduction properties was observed in the compound Ca10-xMx(PO4)6(OH)2-xOx, where M represents Y3+ or La3+. Based on apatite structure, a model was proposed to interpret the effect.

引用

页码：660 / 663