Siemens Aktiengesellschaft

Chun Lu

Kevin Huang

Nicolas Vortmeyer

Shih-Yu W Liu

Kevin P Litzinger

James L Shull

Shailesh D Vora

Gong Zhang

Charles R Osborne

Mehrdad Tartibi

Michael Josef Suess

A rechargeable electrochemical battery cell includes a molten carbonate salt electrolyte whose anion transports oxygen between a metal electrode and an air electrode on opposite sides of the electrolyte, where the molten salt electrolyte is retained inside voids of a porous electrolyte supporting structure sandwiched by the electrodes, and the molten salt includes carbonate including at least one of the alkaline carbonate including LiCo, NACO, and KCO, having a melting point between 400&#xb0; C. and 800&#xb0; C.

Rechargeable anion battery cell using a molten salt electrolyte

An ROB stack (') contains a plurality of stacked ROB cells () made from: thin metal bipolar housings () having air inlets and exits and horizontal channels for feeding air between the inlets () and exits (), the channel having top ridges and also grooves () for containing active material (); a porous air electrode () next to the air channels allowing air contact; a metal electrode (); and an oxygen ion transfer membrane () acting as electrolyte; wherein the plurality of all the assemblies form vertical air inlet and outlet plenums.

Oxygen plenum configurations of components in low cost planar rechargeable oxide-ion battery (ROB) cells and stacks

A rechargeable oxide-ion battery cell, operating below 800&#xb0; C., containing a molten salt-containing electrode, made of active metal-active metal oxide-active metal salt; which electrode is associated with an electrolyteand an air electrodeto provide the cell

Molten salt-containing metal electrode for rechargeable oxide-ion battery cells operating below 800&#xb0;C

An all solid state rechargeable oxide-ion (ROB) battery () has a thermal energy storage (TES) unit () between two oxide-ion cells () with metal-metal oxide electrodes () on opposite sides of an anion conducting solid electrolyte () where none of the electrodes is contact with air.

All solid state rechargeable oxide-ion battery (ROB) system

Processing steps for constructing a rechargeable oxide-ion battery (ROB) cell using a cell membrane assemblyand a hollow metal housing structurewherein assembly steps include: a) forming a membrane assemblyof air electrode, metal electrodeand electrolytetherebetween; b) sealing the membrane assemblyto a surrounding frame; c) filling the hollow metal housing structurewith active material; d) forming electrical contact between the framed membrane assembly and the filled housing structure; and e) joining the framed membrane assembly and the active housing structure to form a ROB cell.

Construction of planar rechargeable oxide-ion battery cells and stacks using stainless steel housing structures

The present invention describes a solid-solution synthesis method for producing porous Fe-containing active material () wherein Fe is interwoven with supporting oxide(s) by the following steps: mixing () Fe-containing specie (&#x3b1;) () and a supporting specie (&#x3b2;) () containing element of X, to provide a mixture (), high-temperature treatment () to provide a Fe&#x2014;X&#x2014;O solid solution (), and reducing () the solid solution to provide the Fe-containing active material wherein Fe is interwoven with X oxide(s) ().

Solid-solution method for producing iron-containing active materials for rechargeable oxide-ion battery cells

The outer surface of a metal electrodeof a rechargeable oxide-ion battery (ROB) cell is covered by its own dense electrolyteand interconnection, where the dense electrolyteand interconnectionhermetically seal the metal electrode away from oxygen-containing environment to prevent direct contact between active metal and oxygen which would lead to self discharge, thus, producing a self-sealed metal electrode of a ROB cell without introducing additional sealing components.

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Sewickley, PA, United States of America

Chun Lu