Phase Inversion Prepare Anode And Electrochemical Performance Of Solid Oxide Fuel Cell

The rapid development of human society and a lot of fossil energy consumption have led to serious environmental problems. Therefore, the development of efficient, clean new energy technology, to meet the demand for energy and also reduce or avoid impacts on the environment and achieve sustainable development is the common goal of countries in the world. Solid oxide fuel cells use hydrogen as fuel, resulting product is water, which in theory it can achieve zero pollution and the power generation efficiency could reach to 60%-80%.Currently in the SOFCs technology, the design of electrode support widely used in single-cell structure. Design of electrode support in single-cell structure, since the electrolyte thinning, the operate temperature can be significantly reduced (500-650 ℃), thereby reducing the cost (cell stack using low-cost metal connecting material), and improve long-term stability and battery life. For the SOFCs of electrode support, further improve battery performance, besides the battery materials, the most critical issue is optimizing the cell structure, especially the pore structure of the support electrode (reduced concentration polarization), and the development of low-cost cell preparation techniques.In this paper, we use the existing battery materials for research, focus on open, straight pores anode support plane-type and microtubule SOFC single cell preparation techniques and study the battery’s performance.Chapter one introduced the development of fuel cells, solid oxide fuel cell working principle, advantages, and tendency and faced issues and thus determine the research target and content of this paper.The second chapter focuses on the phase inversion tape-casting technique to prepare open, straight pores anode support plane type Ni-YSZ|YSZ|YSZ-LSM single cell (YSZ= Zr0.8Y0.2O2-δ, LSM= La0.8Sr0.2MnO3-δ), and study the single cell’s output performance in H2-3% H2O as fuel and ambient air as the oxidant electrical. Use phase inversion tape-casting technique to prepare open, straight pores Ni-YSZ anode supported, and using dip-coating prepared YSZ dense electrolyte layer, and using screen printing/brush-printing preparation LSM-YSZ porous cathode.In chapter 3 NiO-YSZ hollow fiber anode support was fabricated by using phase inversion extrusion technology, and dip-coating technique was used to fabricate dense YSZ electrolyte layer, and YSZ-LSM was acted as composite cathode and study the output performance of its single cell.In chapter 4 study different solidification conditions on microstructure of hollow fibers, it is desirable to obtain an open pore structure straight hollow fiber anode support, thereby reducing the tube anode-supported SOFC hollow fiber anode concentration polarization, thus improving the electrical output performance of the single cell.In chapter 5, the researches presented in this paper are evaluated and future work concerning the development of SOFC is discussed.