Nano-templated energy storage materials
AssigneeMassachusetts Institute of Technology
InventorsAlexie M. Kolpak, Jeffrey C. Grossman
Life of this patent
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Abstract
A solar thermal fuel can include a plurality of photoswitchable moieties associated with a nanomaterial. The plurality of photoswitchable moieties can be densely arranged on the nanomaterial, such that adjacent photoswitchable moieties interact with one another. The solar thermal fuel can provide high volumetric energy density.
Claims8
An energy storage device comprising a solar thermal fuel including closepacked arrays of photoswitchable moieties associated with a nanomaterial that tethers one end of each of the photoswitchable moieties to the nanomaterial, wherein the photoswitchable moieties store energy of the device with enhanced thermal stability,
- the closepacked arrays of photoswitchable moieties covalently attached and aligned parallel to the long axis of a nanomaterial and arranged in a repeating pattern, the pattern selected so as to produce interactions between adjacent photoswitchable moieties such that when illuminated, the photoswitchable moieties are converted to an energy-storing form wherein the photoswitchable moiety includes a plurality of substituted diazobenzene moieties,
- wherein the plurality of substituted diazobenzene moieties have formula (I):
- wherein:
- each R1, independently, is H, halo, hydroxy, nitro, cyano, amino, alkylamino, dialkylamino, —SO3H, alkyl, alkenyl, cycloalkyl, cycloalkenyl, alkoxy, cycloalkoxy, heterocyclyl, aryl, heteroaryl, heterocyclylalkyl, arylalkyl, heteroarylalkyl, —C(O)-alkyl, —C(O)-alkenyl, —C(O)— cycloalkyl, —C(O)-cycloalkenyl, —C(O)-alkoxy, —C(O)-cycloalkoxy, —C(O)-heterocyclyl, —C(O)-aryl, —C(O)-heteroaryl, —C(O)-heterocyclylalkyl, —C(O)-arylalkyl, or —C(O)-heteroarylalkyl;
- each R2, independently, is H, halo, hydroxy, nitro, cyano, amino, alkylamino, dialkylamino, —SO3H, alkyl, alkenyl, cycloalkyl, cycloalkenyl, alkoxy, cycloalkoxy, heterocyclyl, aryl, heteroaryl, heterocyclylalkyl, aryl alkyl, heteroaryl alkyl, —C(O)-alkyl, —C(O)-alkenyl, —C(O)-cycloalkyl, —C(O)-cycloalkenyl, —C(O)-alkoxy, —C(O)-cycloalkoxy, —C(O)-heterocyclyl, —C(O)-aryl, —C(O)-heteroaryl, —C(O)-heterocyclylalkyl, —C(O)-arylalkyl, or —C(O)-heteroarylalkyl;
- a is 0, 1, 2, 3 or 4;
- b is 0, 1, 2, 3, 4, or 5;
- wherein at least one of a orb is 0 and at least one of R1 or R2 is not H, and
- represents an optional covalent link to the nanomaterial, wherein the nanomaterial includes a polyaromatic hydrocarbon, a graphite, a graphene, a conjugated alkene chain, a fullerene, or a carbon nanotube.
An energy storage device comprising a solar thermal fuel including a plurality of diazobenzene moieties covalently linked at one end to a carbon nanomaterial via covalent bonds, wherein the photoswitchable moieties store energy of the device, wherein the plurality of substituted diazobenzene moieties are arranged in a repeating pattern on the carbon nanomaterial,
- wherein the plurality of substituted diazobenzene moieties have formula (I):
- wherein:
- each R1, independently, is H, halo, hydroxy, nitro, cyano, amino, alkylamino, dialkylamino, —SO3H, alkyl, alkenyl, cycloalkyl, cycloalkenyl, alkoxy, cycloalkoxy, heterocyclyl, aryl, heteroaryl, heterocyclyl alkyl, arylalkyl, heteroaryl alkyl, —C(O)-alkyl, —C(O)-alkenyl, —C(O)— cycloalkyl, —C(O)-cycloalkenyl, —C(O)-alkoxy, —C(O)-cycloalkoxy, —C(O)-heterocyclyl, —C(O)-aryl, —C(O)-heteroaryl, —C(O)-heterocyclylalkyl, —C(O)-arylalkyl, or —C(O)-heteroarylalkyl;
- each R2, independently, is H, halo, hydroxy, nitro, cyano, amino, alkylamino, dialkylamino, —SO3H, alkyl, alkenyl, cycloalkyl, cycloalkenyl, alkoxy, cycloalkoxy, heterocyclyl, aryl, heteroaryl, heterocyclylalkyl, arylalkyl, heteroarylalkyl, —C(O)-alkyl, —C(O)-alkenyl, —C(O)— cycloalkyl, —C(O)-cycloalkenyl, —C(O)-alkoxy, —C(O)-cycloalkoxy, —C(O)-heterocyclyl, —C(O)-aryl, —C(O)-heteroaryl, —C(O)-heterocyclylalkyl, —C(O)-arylalkyl, or —C(O)-heteroarylalkyl;
- a is 0, 1, 2, 3 or 4;
- b is 0, 1, 2, 3, 4, or 5;
- wherein at least one of a orb is 0 and at least one of R1 or R2 is not H, and
- represents an covalent link to the nanomaterial, wherein the nanomaterial includes a polyaromatic hydrocarbon, a graphite, a graphene, a conjugated alkene chain, a fullerene, or a carbon nanotube.
Dependencies are inferred from the claim text.