Back to results
US 12,770,801 B2Granted
Fused aromatic molecules as electrode materials
AssigneeMassachusetts Institute of Technology
InventorsMircea Dinca, Harish Banda, Tianyang Chen
Life of this patent
Estimating the term…
Abstract
Compositions comprising fused aromatic systems and associated electrodes, electrochemical cells, and charge storage devices are generally described. Preferably, the aromatic comprising a bis-tetraamino-benzoquinone molecule and/or a tautomer, oligomer, and/or polymer thereof. Alternatively, the aromatic composition comprises an active material comprising a fused aromatic system comprising carbon atoms, hydrogen atoms, and a plurality of heteroatoms each replacing a carbon atom.
Claims19
A composition, comprising:
- a bis-tetraamino-benzoquinone molecule of the structure:
- and/or a tautomer, oligomer, and/or polymer thereof.
An electrode, comprising:
- a bis-tetraamino-benzoquinone molecule of the structure:
- and/or a tautomer, oligomer, and/or polymer thereof.
An electrochemically active charge storage material, comprising:
- an active material comprising a fused aromatic system comprising carbon atoms, hydrogen atoms, and a plurality of heteroatoms each replacing a carbon atom, wherein:
- the ratio of carbon atoms to heteroatoms is greater than 1 and less than 2, wherein the plurality of heteroatoms comprise N, O, S, and/or Se;
- and
- at least a portion of the fused aromatic system is in a planar and/or two-dimensional configuration via a number of hydrogen-bonding interactions, wherein the number of hydrogen-bonding interactions is greater than or equal to 0.3 and less than or equal to 1 hydrogen-bond per mole of carbon atoms.
1 more element
A charge storage device, comprising:
- an electrochemically active charge storage material, comprising an active material comprising a fused aromatic system comprising carbon atoms, hydrogen atoms, and a plurality of heteroatoms each replacing a carbon atom, wherein the ratio of carbon atoms to heteroatoms is greater than 1 and less than 2, and wherein the plurality of heteroatoms comprise N, O, S, and/or Se;
- wherein the electrochemically active charge storage material has a charge capacity of greater than or equal to 100 mAh per gram of active material;
- and/or
- the electrochemically active charge storage material has a charge capacity of greater than or equal to 50 mAh per gram of electrochemically active charge storage material;
- and/or
- the electrochemically active charge storage material delivers at least 90% of its charge capacity at a voltage higher than 2.0 V vs. a Lit/Li standard reference electrode.
3 more elements
A charge storage device, comprising:
- an electrochemically active charge storage material, comprising an active material comprising a fused aromatic system comprising carbon atoms, hydrogen atoms, and a plurality of heteroatoms each replacing a carbon atom, wherein the ratio of carbon atoms to heteroatoms is greater than 1 and less than 2, and wherein the plurality of heteroatoms comprise N, O, S, and/or Se;
- wherein the electrochemically active charge storage material is disposed in an electrolyte, and
- the electrochemically active charge storage material has a charge capacity that is at least 50% greater when a pH value of the electrolyte is greater than or equal to 0 and less than or equal to 2 or greater than or equal to 12 and less than or equal to 15 as compared to when the pH value of the electrolyte is greater than and less than 12.
A charge storage device, comprising:
- an electrochemically active charge storage material, comprising an active material comprising a fused aromatic system comprising carbon atoms, hydrogen atoms, and a plurality of heteroatoms each replacing a carbon atom, wherein the ratio of carbon atoms to heteroatoms is greater than 1 and less than 2, and wherein the plurality of heteroatoms comprise N, O, S, and/or Se;
- wherein a ratio of moles of electrons stored as charge per mole of heteroatoms is greater than or equal to 0.3 and less than or equal to 0.6.
A charge storage device, comprising:
- an electrochemically active charge storage material, comprising an active material comprising a fused aromatic system comprising carbon atoms, hydrogen atoms, and a plurality of heteroatoms each replacing a carbon atom, wherein the ratio of carbon atoms to heteroatoms is greater than 1 and less than 2, and wherein the plurality of heteroatoms comprise N, O, S, and/or Se;
- wherein the charge storage device is a capacitor or a supercapacitor.
Dependencies are inferred from the claim text.