Loading patent…
AssigneeExxonMobil Technology and Engineering Company
InventorsRoss Mabon, Jordan N. Metz, Satish Bodige, Latoya S. Chambers, Divyaraj Desai
Estimating the term…
Disclosed herein are a variety of systems, compositions, and methods for reversibly storing electrical energy in a redox flow battery with a unit cell potential equal to or greater than 3.5 volts. The systems may include a positive section, a negative section, and an electroactive bipolar redox molecule comprising an anolyte moiety and a thianthrene-containing catholyte moiety separated by a non-conjugating insulating linker. The thianthrene-containing catholyte moiety may comprise thianthrene or at least one of its derivatives and the non-conjugating insulating linker comprises at least two —CX2 linkers, wherein X comprises at least one atom of hydrogen and/or heteroatoms. The positive section may comprise a first metal electrode in contact with the electroactive bipolar redox molecule and a supporting electrolyte dissolved in a solvent. The negative section may comprise a second metal electrode in contact with the electroactive bipolar redox molecule and additional electrolyte dissolved in additional solvent.
A system for energy storage comprising:
The system of any preceding claim, wherein the non-conjugating insulating linker comprises two —CX2 linkers, wherein each X comprises at least one atom individually selected from the group consisting of hydrogen and a heteroatom.
The system of any preceding claim, wherein the non-conjugating insulating linker comprises at least three —CX2 linkers, wherein each X comprises at least one atom individually selected from the group consisting of hydrogen and a heteroatom.
The system of any preceding claim, wherein the system further comprises a tank for storing the electroactive bipolar redox molecule connected to the positive section and the negative section.
The system of any preceding claim, further comprising from 2 electrochemical cells to 200 electrochemical cells to form a battery stack, wherein each of the electrochemical cells comprises a corresponding positive section comprising a thianthrene-containing catholyte and a corresponding negative section comprising an anolyte.
The system of any preceding claim, wherein the solvent and additional solvent are each an aprotic solvent selected from the group consisting of acetonitrile, dimethyl sulfoxide, sulfolane, dimethylacetamide, dimethylformamide, propylene carbonate, ethylene carbonate propyl sulfone, and butyl sulfone.
The system of any preceding claim, wherein the positive section is separated from the negative section by a porous separator and/or an ion-selective membrane, and wherein the system further comprises a circulation device configured to circulate a catholyte or an anolyte from a storage tank to the positive section or the negative section.
A composition comprising:
A method for reversibly storing electrical energy in a redox flow battery with a unit cell potential equal to or greater than 3.0 volts, the method comprising:
Dependencies are inferred from the claim text.