Abstract: The present teachings relate to an electrochemical system including an electrochemical device and multiple independent circuits which permit independent control of the reaction rates at different sections of the electrochemical device. The electrochemical device can be a fuel cell or an electrolyzer, and can include a common electrode in electrical communication with two or more independent circuits. The present teachings also relate to operating methods of the electrochemical system described.

Abstract: The present teachings relate to solid oxide fuel cells with internal reforming capability. The solid oxide fuel cell generally includes a cathode, an electrolyte, an anode, and a catalyst layer in contact with the anode. The catalyst layer can include a support membrane and a reforming catalyst layer associated with the support membrane. In some embodiments, the reforming catalyst can include one or more partial oxidation reforming catalysts. The present teachings also provide methods of making and operating the solid oxide fuel cells described above.

Abstract: The present teachings relate to solid oxide fuel cell systems featuring a novel design that provides improved thermal management of the system. The solid oxide fuel cell systems disclosed include gas channeling features that regulate the temperature of local areas of the system and protect thermal-sensitive current collection elements.

Abstract: The present teachings relate to an electrochemical cell having a closed Fermat spiral shape. The electrochemical cell comprises an anode, a cathode, an electrolyte, a fuel channel, an oxidant channel, and optionally a reforming layer. The electrochemical cell can be made through extrusion, gel-casting, or 3-D printing. The electrochemical cell can be a solid oxide fuel cell.