The Preparation Of Ni-CeO₂/Ni-ssz//SSZ//LSM Of Solid Oxide Fuel Cell And The Research Of Its Properties

Solid Oxide Fuel Cell(SOFC) was a new energy conversion device. For its high efficiency and low greenhouse gas emission , governments of different countries and companies paid great attention to SOFC. This paper explores the good performance of dense SOFC electrolyte preparation from tape-casting technology. Through improving tape-casting process and the preparation of different morphology of anode material, we achieve requirements for solid oxide electrolyte and anode material.This paper studied the preparation of solid oxide fuel cell electrolyte tape-casting technology. Drying process is analyzed, buried powder sintered powder mass, the placement of sintering methods on the properties of sintered body and tape-casting preparation of electrolyte membrane support was determined by the preliminary research of the process parameters. The electrolyte obtained sintered body surface flat with higher strength and density can meet the electrolyte preliminary support type of SOFC electrolyte membrane support requirements. The main process parameters for preparation of electrolyte membrane support tape-casting optimization. On the basis of guaranteed to stretch forming as the decrease of the flow of organic matter content in the pulp, we improve the sintering properties and electrochemical properties of sintered body, the bending strength, relative density,conductivity rate of SSZ ceramic basis are 413 MPa, 98.9%, and 0.096 S cm-1, ensuring that the seal of the battery assembly and other follow-up work smoothly.In addition, this paper studied the Ni/SSZ anode material sintered at different temperatures, and electrochemical properties at 1250 ℃ sintering can obtain good anode material, the power density can be 248mW·cm ,in the electrolyte matrix surface coated with different morphology of CeO2 anode carbon deposition resistance and electrochemical properties of the catalyst layer. The potential of adding CeO2 catalyst layer is stable, while the potential of nano ball CeO2 catalyst layer begin to decrease at the time of 18000 s. The potential of nano rod CeO2 catalyst layer is stable at time of 90000 s. The power density of nano rod CeO2 catalyst layer can be 350 mW·cm . It is concluded that CeO2 catalyst layer than stick CeO2 catalyst layer has a higher discharge power and better ability of resistance to carbon deposition.