BCZY27/La4Ni3O10复合阴极的结构优化
毕业论文关键词：质子导体; 固体氧化物燃料电池; 化学稳定性; BaCeO3 Abstrac tThe solid oxide fuel cell (SOFC) is a solid state electrochemical device.With theconcept of sustainable development received more and more attention, solid fuel cellhas become a hot spot because it is the efficient and environmentally friendly device.However, even with the many benefits of SOFC technology, critical drawbacksassociated with the conventional SOFC operating temperature need to be resolved.The high operating temperature causes many problems such as high cost, electrodesintering, interface reactions between cell components, material compatibilitychallenges and so on.Therefore, a number of studies has committed itself to reducing the operatingtemperature, lowering manufacturing costs, improving the long-term performance andextending the range of battery materials.Cerium and barium proton conducting solidoxide electrolyte fuel cells based with cerium and barium have received wideattention because of its excellent performance. The chemical stability of BaCeO3 ispoor, the conductivity of BaZrO3 is not ideal. Based on the direction of lowtemperature SOFC, in this paper，we try to use the element Zr4 + with stability of thereinforcement learning and the element Y3 + witch can improve the conductivity ofrare-earth common alternative BaCeO3 Ce4 +, in order to be able to get the solid oxidefuel cell with both possess chemical stability and high electrical conductivity. As aresult of the low battery performance of the current oxygen ion conductor traditionalcathode materials used in proton conductor electrolyte , so we are looking for suitablematerials for the cathode of proton conductor electrolyte, with few studies La4Ni3O10as battery cathode, so constitute a novel Ni base/BCZY27/La4Ni3O10 collocation cellstructure. We dip La4Ni3O10 into BCZY27 electrolyte skeleton by impregnationmethod to constitute BCZY27 / La4Ni3O10 composite cathode. We can clearly see theporous structure of cathode witch with good porosity by XRD and SEM test. Byanalyzing DIL tests can clearly see that the cathode and electrolyte thermal matchingperformance is well.Keywords: proton conductors;solid oxide fuel cells;chemical stability;BaCeO3