Patent ID: 9583772
Date: 2017-02-28
CPC Classifications: H01M,Y02E

Claim:
1. An oxide-ceramic high-temperature tubular fuel cell having a rotationally symmetrical gas channel ( 2 ) open at least at one end, characterized in that the fuel cell has a substrate ( 1 ) surrounding the gas channel rotationally symmetrical at least sectionally along its periphery, wherein the substrate forms an electrical discharge structure which is not part of the anode and is not part of the cathode of the fuel cell, or forms a bearing structure of the fuel cell which is not part of the anode and is not part of the cathode of the fuel cell and which is not part of an electrolyte of the fuel cell, wherein said substrate has rotationally symmetrical conically tapering cross-sections that change continuously along the longitudinal axis of the gas channel and wherein the substrate ( the substrate ( said fuel cell further having an outer electrode, said outer electrode having an internal cone adapted to the inner electrode and the electrolyte, so the outer periphery of the fuel cell corresponds to a cylinder; and wherein said fuel cell includes a connecting structure located at an end of said fuel cell for connecting said fuel cell with a fuel cell stack, said connecting structure comprising one or more internal or external threads, recesses, or prolongations integrated into or formed from said substrate and having a shape matched to provide an exact fit with a counter-shape within a fuel cell stack to which the fuel cell is connectable, said threads, recesses, or prolongations connected to a fuel cell stack by clamping, plug-in, inserting, adhering, soldering, or welding, said threads, recesses, or prolongations made as part of said anode, cathode, electrical discharge structure, or bearing structure section of the fuel cell, and wherein said threads, recesses, or prolongations are electrically conductive to enlarge the electrical contact surface between the fuel cell and a current-discharge unit of the fuel cell stack.