Verfahren zur Herstellung einer Interkonnektionsschicht durch Sintern auf eine Elektrode einer elektrochemischen Zelle

摘要

Depositing a dense, high temp.electronically conductive interconnection on an electrode structure comprises: applying a thin porous, base layer of doped LaCrO3 particles and organic polymer binder on a portion of a first surface of an electrode structure; coating the base layer with a top layer compsn. selected from CaO+Al2O3, SrO+Al2O3, BaO+Al2O3, CaO+TiO2, SrO+TiO2, BaO+TiO2, and their mixts.; and heating the two layers to a temp. and for sufficient time to melt the top layer compsn. and allow it to fill any open pores in the porous base layer of doped LaCrO3. The LaCrO3 is doped with at least one of Ca, Ba, Sr, Co and Mg; the electrode is a self-supporting, tubular, axially elongated structure comprising Ca or Sr doped LaMnO3, after applying the base layer is heated to remove binder, and further heated to firmly attach them to the electrode structure; the 2 layers are first sintered before the top layer is melted; the top layer compsn. is selected from (CaO)12(Al2O3) and Sr3Al2O6; and solid oxide electrolyte is applied to the remaining portion of the electrode structure, which electrolyte is then substantially coated with a cermet, exterior electrode to provide an electrochemical cell; a plurality of electrodes electrically connected together.