TUBE ELEMENT OF ELECTROCHEMICAL DEVICE WITH THIN-LAYER SOLID-OXIDE ELECTROLYTE (VERSIONS) AND METHOD OF ITS MANUFACTURE Russian patent published in 2017 - IPC H01M8/252 H01M8/10 H01M8/12 H01M8/126 B82B1/00 

FIELD: chemistry.

SUBSTANCE: proposed tubular fuel cell with a thin-layer solid oxide electrolyte, gas diffusion electrodes, interface and collector layers is made with monolithic end bosses that have a smooth transition to the electrolyte. Reducing the thickness of the carrier solid electrolyte is achieved due to end thickenings and/or of carcass in the working area, as well as by increasing the thickness of one or both current electrode collectors. The cylindrical or weakly cone tube of the carrier electrolyte is made of ceramics with an average crystallite size of less than 500 nm, has a wall thickness of less than 0.3 mm With end thickenings up to 0.5 mm and thin-layered 15-20 mcm electrodes located on the lateral surface of the electrolyte in the interval between the end thickenings. The method for manufacturing a tubular element includes the use of nanoscale solid electrolyte powders, micro-sized and nanoscale powders of electrode materials and interface layers prepared in the form of films with a polymeric binder, from which a multilayer preform of the element is formed by winding the films onto a rod, laminating layers of the preform, for example, by magnetic pulse method and at least two-stage sintered together at temperatures below 1300°C.

EFFECT: improvement of manufacturability of production of solid oxide element, reduction of mass and dimensions characteristics and increase of electrical and resource characteristics of fuel cell.

8 cl, 7 dwg