三维有序孔氧化物复合阴极的可控制备及电化学性能研究

项目名称： 三维有序孔氧化物复合阴极的可控制备及电化学性能研究

项目编号： No.51302069

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 孙丽萍

作者单位： 黑龙江大学

项目金额： 26万元

中文摘要： 将模板组装技术和浸渍手段相结合，制备具有三维有序孔结构的纳米复合阴极。通过调节模板剂类型，模板颗粒尺寸，刻蚀时间，浸渍溶液配比及浓度，热处理条件等各项工艺参数，实现三维有序孔结构骨架材料的设计制备；进一步在骨架材料上采用浸渍法沉积纳米阴极材料，调控浸渍材料组成、浸渍液浓度和烧结条件得到三维有序孔复合阴极；以此复合阴极构造半电池进行测试，探索电极微结构与电性能之间的关联，揭示材料组成-微结构-材料性能之间的规律，研究阴极反应机理，为阴极性能优化设计提供理论依据。

中文关键词： 固体氧化物燃料电池；阴极材料；三维有序孔；可控制备；电化学性能

英文摘要： Oxides composite cathodes with three-dimensional ordered porous structures are prepared by template assembly technology combining impregnation method. Through the reasonable selection of the template agents, the template particle size, the precursor concentration, the etching time and the heat treatment process, the controllable preparation of the three-dimensional ordered porous framework can be realized. Further introducing nanometer cathode materials in the framwork by impregnation method, the final composite cathodes with three-dimensional ordered porous structures are obtained. The porous structure and the composition of the cathode are controlled by the impregnated material composition, the precursor concentration and the sintering parameters. Test half-cells are constructed on these special cathodes, and the cell performances are explored. The effects of cathode microstructures to the performances are evaluated to reveal the connection of composition, microstructure and property. Through the study of the reaction mechanism of this special designed cathode, we can provide a theory basis to develop and optimize new electrode materials.

英文关键词： solid oxide fule cells；cathode material；three-dimensional ordered porous；controllable preparation；electrochemical properties