Assembly Process And Performance Study Of Intermediate Temperature Solid Oxide Fuel Cell

As the fossil energy depleted and increasingly reduce, hydropower, wind power, solar energy and so on green energy development and application of shortage, energy problems seriously affect the development of the country and strategic security. The development of new energy, and reduce greenhouse gas emissions, and gradually cause people to pay attention to and become the focus of research. In recent decades, all countries in the world into a huge funds dedicated to solving or replace fossil energy, fuel cell technology arises at the historic moment and has achieved great development. According to the medium temperature solid oxide fuel cell (ITSOFC, Intermediate temperature solid oxide fuel cell) of each electrode many researchers have done a lot of research, but to single cell preparation process but no system research.This paper using glycine natural burning method and citric acid salt was prepared La0.7Sr0.1s Ca0.15Co1-xFexO3-δ (x=0.2,0.4,0.6,0.8) cathode materials, and the particle size, morphology was characterized, cathode material porosity decreases with the increase of the pressure, but when the pressure is reached and mp later, porosity stable value, close to0.328%. The dry pressure molding method preparation of single cell, in a hydrogen/air atmosphere research different cathode, firing temperature and pressure conditions, and hydrogen flow rate of single cell influence. Cell shrinkage in the same pressure under the action of the battery radial shrinkage with the rise of temperature change, in5MPa pressure conditions, from800℃to1100℃13.34%decrease of4.29%, in10MPa pressure conditions, from800℃to1100℃13.56%decrease of4.34%, in15MPa pressure conditions, from800℃to1100℃13.71%decrease of4.34%, in the20MPa pressure conditions, from800℃to1100℃13.71%decrease of4.38%, in25MPa pressure conditions, from800℃to1100℃13.76%decrease of4.43%; At the same temperature conditions, with the increase of the pressure of single cell radial shrinkage smaller.Different La0.7Sr0.15Ca0.15Co1-xFexO3-δ cathode materials, the battery to the largest open circuit voltage of0.98v,1.18v voltage is close to ideal. The battery open-circuit voltage with the increase of temperature decrease gradually, different cathode material preparation of single cell in hydrogen flow rate for300ml/min in cell open circuit voltage, maximum value is0.98v.This experiment final dry pressure for preparation of medium temperature solid oxide fuel cell technology condition that glycine acid for preparation of cathode materials, in800℃calcination conditions, and mp conditions dry pressing for single cell. In the hydrogen flow rate for300ml/min,800℃condition to get the optimal results of the battery, is0.98v.