Electrode-supported tubular solid-oxide electrochemical cells suitable for use in electrochemical chemical synthesis and processes for manufacturing such are provided.

A solid oxide cell can comprise a nonporous oxide layer, one or more first porous layers, and one or more second porous layers. The nonporous oxide layer can conduct oxygen ions and can operate as a solid electrolyte. The first and second porous layers can be disposed on opposite sides of the nonporous oxide layer. The nonporous oxide layer can have a density greater than that of each of the first and second porous layers. In some embodiments, at least one of the one or more first porous layers can be infiltrated with one or more electrocatalytic oxides. Alternatively, in some embodiments, a porous functional layer can be disposed between the nonporous oxide layer and the one or more first porous layers. The porous functional layer can be effective to increase an open circuit voltage of the solid oxide cell.

The present invention relates to a rechargeable aqueous ZnIS flow battery system. The system includes a cathode side comprising an electrode material and a first storage tank providing a catholyte, wherein the catholyte comprises zinc iodide and a soluble starch, forming an electrolyte having aggregated colloidal nanoparticles; an anode side comprising the electrode material and a second storage tank providing an anolyte; and a separator positioned between the cathode and anode. The anolyte and the catholyte flow between the cathode and the anode by a peristaltic pump. The present invention provides a system to further exploit colloidal electrolyte chemistries for the LPPM-based flow battery systems towards power cost-effectiveness and high-temperature large-scale energy storage.

The cell of the present invention includes an element portion and a first layer. The element portion includes a first electrode layer, a second electrode layer and a solid electrolyte layer. The first electrode layer serves as a tubular support body. The solid electrolyte layer is located between the first electrode layer and the second electrode layer. The solid electrolyte layer contains an oxide as a primary component and a first content of a rare earth element. The solid electrolyte layer has a thickness of 30 m or less. The solid electrolyte layer has a region devoid of the second electrode layer. The first layer is located in the region. The first layer contains the oxide as a primary component and a second content of the rare earth element. The second content is different from the first content. The first layer has a higher strength than the solid electrolyte layer.

A solid oxide fuel cell comprising an electrolyte, an anode and a cathode. In this fuel cell at least one electrode has been modified with a promoter using gas phase infiltration.

A solid oxide fuel cell comprising an electrolyte, an anode and a cathode. In this fuel cell at least one electrode has been modified with a promoter using liquid phase infiltration.

The present invention relates to a medium and high-temperature carbon-air cell, which include a solid oxide fuel cell, a CO.sub.2 separation membrane and a carbon fuel. The solid oxide fuel cell is a tubular solid oxide fuel cell with one end closed, the carbon fuel is placed inside the tubular solid oxide fuel cell, and the CO.sub.2 separation membrane is sealed at the open end of the solid oxide fuel cell. In the carbon-air cell, with carbon as fuel and oxygen in the air as an oxidizing gas, electrochemical reactions occur. The carbon-air cell of the present invention has a novel structural design, and can achieve electricity generation with the solid oxide fuel cell without externally charging a gas, and at the same time, CO.sub.2 generated inside the solid oxide fuel cell can be discharged from the system through the CO.sub.2 separation membrane in time.

Electrode-supported tubular solid-oxide electrochemical cells suitable for use in electrochemical chemical synthesis and processes for manufacturing such are provided.

Systems and methods are disclosed that provide for a fuel cell stack assembly including stack end cells that facilitate improved diagnostic and detection capabilities. In certain embodiments, an anode side of a FC stack end cell consistent with embodiments disclosed herein may be configured to have a lower anode gas flow rate than other cells in the FC stack. The cathode side of a FC stack end cell consistent with embodiments disclosed herein may be further configured to have a higher gas flow rate than other cells in the FC stack. Embodiments of the disclosed FC stack end cells may, among other things, allow for detection of adverse conditions and/or events in a FC stack assembly prior to such conditions and/or events negatively affecting other cells in the FC stack.

The present invention includes an integrated planar, series connected fuel cell system having electrochemical cells electrically connected via interconnects, wherein the anodes of the electrochemical cells are protected against Ni loss and migration via an engineered porous anode barrier layer.