一种复合熔融碳酸盐燃料电池基体阴极的制备和性质研究

采用电泳沉积技术将LiCoO2和CeO2两种纳米颗粒同时沉积至多孔镍基阴极表面,获得一种新型复合基体阴极材料——LiCoO2-CeO2-Ni。研究了其在模拟熔融碳酸盐燃料电池(MCFC)工作条件下的形变/溶解行为,并对其实验前后的表面进行了详细分析。结果表明,与传统多孔镍基阴极相比,新基体阴极材料在模拟MCFC启动及运行条件下形变微小,镍溶出速率低。材料表面所修饰的纳米颗粒薄层对镍基体包覆致密且与之形成稳定新相,从而有效抑制了材料的形变和溶解。

Preparation and Property of a Composite-Based Cathode for Molten Carbonate Fuel Cells

A composite-based cathode (LiCoO₂-CeO₂-Ni) for molten carbonate fuel cells (MCFCs) was prepared by electrophoretic deposition (EPD) technique using two kinds of nanoparticles, LiCoO₂ and CeO₂. The deformation and dissolution of the base cathode were studied under simulated conditions of MCFC and the cathode surface was also analyzed. The results indicate that the base cathode has a negligible deformation and a lower dissolution rate compared with that of the Ni-based cathode. The nanoparticles layer on the surface of the cathode is very compact and the nanoparticles combine well with Ni matrix to form a stable new phase, which can effectively inhibit the deformation and dissolution of the material.