纳米线构筑的三维网络中温SOFC抗积碳复合阳极的结构与性能研究

项目名称： 纳米线构筑的三维网络中温SOFC抗积碳复合阳极的结构与性能研究

项目编号： No.51462011

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 吴也凡

作者单位： 景德镇陶瓷大学

项目金额： 47万元

中文摘要： 本项目率先研究微波场作用下高分子络合物纺丝液的成丝参数对静电纺丝制备La0.75Sr0.25Cr0.5Mn0.5O3纳米线和YSZ纳米线的影响，对纳米线的形貌、晶相结构和热稳定性及电化学性能等进行表征，优化制备纳米线构筑的三维网络中温抗积碳复合阳极。综合运用多种波谱学技术（含表面敏感的测试手段）对复合阳极的显微结构、相结构、催化剂活性相、区域化学环境等及阳极电化学反应过程中的表面吸附物种、中间态和反应物种等进行表征，结合密度泛函理论计算结果及催化反应能量学等方法，在配位络合催化作用基础上，阐明甲醇等含碳燃料的络合活化过程及裂解碎片在催化剂表面的迁移和积聚等过程；研究在通电状态下复合阳极微细结构的变化规律及调控方法；研究其抗热震性；复合阳极不但有利于阳极反应气体的扩散及结构稳定性，而且其晶界效应和表面效应将大大提高其电催化性能。本项目有助于丰富SOFC的研究内容，具有产业化应用前景。

中文关键词： 纳米线；抗积碳；复合阳极；三维网络；络合催化

英文摘要： The influence of spinning parameters for electrostatic spinning interpolymer complex spinning solution under the microwave on preparation of La0.75Sr0.25Cr0.5Mn0.5O3 and YSZ nanowires will be studied firstly in the study. The morphology, phase structure, thermal stability and electrochemical properties of the nanowires will be characterized. The preparation of anti-carbon complex anode with nanowire three-dimensional network for intermediate temperature SOFC will be optimized. The mirostructure, phase structure, active phase of catalysts, topochemistry environment of complex anode and surface adsorption, intermediate state and reactants in the course of anode electrochemical reaction etc will be characterized by lots of spectroscopy technologies. Adsorption mode and coordination activation of methanol fuel on the anode, atom carbon transfer and accumulation on the surface of catalysts will be illustrated by results of density functional theory and catalytic reaction energetics methods on the base of coordinaton complexing catalysis. The variation and control methods on microcellular structure of complex anode will be studied by electricity. Nanowire three-dimensional network of anti-carbon composite anode not only be beneficaial to the diffusion and structural stability of anode reaction gas, but also greatly enhance the complex anode electrocatalytic performances due to their intergranular and surface effects. The study helps to enrich research contents of SOFC from structure, which has wide application prospect of industrialization.

英文关键词： nanowire;anti-carbon;complex anode;three-dimensional network;complex catalysis