INEXPENSIVE METAL-FREE ORGANIC REDOX FLOW BATTERY (ORBAT) FOR GRID-SCALE STORAGE
First Claim
1. A flow battery comprising:
- a positive electrode;
a positive electrode electrolyte including water and a first redox couple, the positive electrode electrolyte flowing over and contacting the positive electrode, the first redox couple including a first organic compound, the first organic compound including a first moiety having formula 1 in conjugation with a second moiety having formula 2 and a reduction product of the first organic compound, the first organic compound being reduced during discharge;
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Accused Products
Abstract
A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.
34 Citations
33 Claims
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1. A flow battery comprising:
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a positive electrode; a positive electrode electrolyte including water and a first redox couple, the positive electrode electrolyte flowing over and contacting the positive electrode, the first redox couple including a first organic compound, the first organic compound including a first moiety having formula 1 in conjugation with a second moiety having formula 2 and a reduction product of the first organic compound, the first organic compound being reduced during discharge; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A flow battery comprising:
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a positive electrode; a positive electrode electrolyte including water and a first quinone redox couple, the first quinone redox couple including a first quinone and a first hydroquinone, the first quinone being reduced to the first hydroquinone during discharge, the first quinone selected from the group consisting of benzoquinone and benzoquinones that are substituted with an electron withdrawing group; a negative electrode; a negative electrode electrolyte flowing over and contacting the negative electrode; and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. - View Dependent Claims (28, 29)
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30. A flow battery comprising:
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a positive electrode; a positive electrode electrolyte flowing over and contacting the positive electrode; a negative electrode; a negative electrode electrolyte including water and a quinone redox couple, the negative electrode electrolyte flowing over and contacting the positive electrode, the quinone redox couple including a quinone and a hydroquinone, the hydroquinone being oxidized to the quinone during discharge, the quinone including a component selected from the group consisting of anthraquinone and anthraquinone that are substituted with an electron donating group; and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. - View Dependent Claims (31, 32, 33)
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Specification