Double-layer composite proton conductor material and preparation method thereof: Fid-Bau Portal

Double-layer composite proton conductor material and preparation method thereof

LI YING / DING YUSHI

The invention relates to a double-layer composite proton conductor material and a preparation method thereof. The material is a double-layer structure composed of a matrix part and a coating part, themolecular formula of the matrix part is A1-yA'yB1-zB'zO3-alpha, and the molecular formula of the coating part is A3 (B'1+xB''2-x) O9-gamma; the preparation method comprises the following steps: (1) preparing a first A raw material, a first B' raw material and a B'' raw material, performing mixing and ball-milling to obtain mixed powder I; (2) pressing the mixed powder I into blocks, and performing calcining to obtain a calcined material I; (3) preparing a second A raw material, a second B raw material, an A' raw material and a second B' raw material, performing mixing and ball-milling to obtain mixed powder II; (4) pressing the mixed powder II into blocks, and performing calcining to obtain a calcined material II; (5) pressing the calcined material II into a matrix blank; covering the matrix blank with the calcined material I to form a coating by adopting a co-pressing, tape casting, spin coating, magnetron sputtering or laser deposition method; and (6) sintering the double-layer blank. The product provided by the invention ensures that the material has high proton conductivity and the electronic conductivity in the material is greatly limited.

一种双层复合质子导体材料及其制备方法，材料由基体部分和涂层部分组成的双层结构，基体部分分子式AA′BB′O，涂层部分分子式A(B′B″)O；制备方法为：(1)准备第一A原料、第一B′原料和B″原料，混合球磨获得混合粉体Ⅰ；(2)混合粉体Ⅰ压制成块，煅烧制成煅烧物料Ⅰ；(3)准备第二A原料、B原料、A′原料和第二B′原料，混合球磨，获得混合粉体Ⅱ；(4)混合粉体Ⅱ压制成块，煅烧制成煅烧物料Ⅱ；(5)将煅烧物料Ⅱ压制制成基体坯料；采用共压、流延、旋涂、磁控溅射或激光沉积方法，将煅烧物料Ⅰ覆盖在基体坯料上形成涂层；(6)双层坯料烧结。本发明的产品在保证材料具有较高的质子电导率，极大的限制材料中的电子导电。

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