Synthesis and Properties of BaSn_(0.75)B_(0.25)O_(3-d)(B=La,Gd,Y,In…) Proton Conductors

• 作 者: Y.Wang A.Chensnaud E.Bevillon A.Morata G.Geneste C.Estournes G.Dezanneau
• 机 构: Laboratoire Structures Propriétés et Modélisation des Solides Ecole Centrale Paris Grande voie des
• 出 处: 复旦学报(自然科学版)
• 发表日期: 2007年05期
• 关键词: acceptor proton barium hundreds mited sintering dense sintered wider ceramics

1 Results We study the synthesis,the structural and transport properties of acceptor-doped barium stannate BaSn0.75B0.25O3-d (B=La,Y…) compounds.Some of these materials were presented few years ago as good proton conductors with some interest for the fuel cell community[1-2].Nevertheless,these studies were only limited to two kinds of dopants and the elaboration was far from being optimised leading to poor properties.So the main objective of the present study is to extend the study of acceptor-doped barium stannate to a wider range of dopants and to determine the influence of synthesis route on material stability,structural and transport properties.

1 Results We study the synthesis, the structural and transport properties of acceptor-doped barium stannate BaSn0.75B0.25O3-d (B = La, Y ...) compounds. Some of these materials were presented few years ago as good proton conductors with some interest for the fuel cell community [1-2]. Nevertheless, these studies were only limited to two kinds of dopants and the elaboration was far from being optimized leading to poor properties. So the main objective of the present study is to extend the study of acceptor-doped barium stannate to a wider range of dopants and to determine the influence of synthesis route on material stability, structural and transport properties.