Methods, compositions and systems for solid-state barocaloric applications
AssigneePresident and Fellows of Harvard College
InventorsJarad A. MASON, Jinyoung SEO
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Abstract
The invention provides methods, compositions, and systems for barocaloric applications such as cooling, heating, and energy storage.
Claims76
A method of heating or cooling employing a barocaloric cycle comprising:
- a) providing heat energy to a composition comprising an organic layer comprising optionally substituted C>3 alkyl chains, wherein the organic layer is in a disordered state and wherein the organic layer is between first and second inorganic layers or comprises a head group capable of hydrogen bonding, halogen bonding, and/or electrostatic interaction with a counterion;
- b) applying compression to the composition to induce the organic layer to undergo an exothermic phase transition to an ordered state, releasing latent heat;
- c) removing the latent heat while the composition is compressed;
- and
- d) removing the compression to allow the composition to revert to the disordered state.
A method of storing thermal energy comprising:
- a) providing a composition comprising an organic layer comprising optionally substituted C>3 alkyl chains at a first temperature and a first pressure, wherein the composition is in an ordered state and wherein the organic layer is between first and second inorganic layers or comprises a head group capable of hydrogen bonding, halogen bonding, and/or electrostatic interaction with a counterion;
- and
- b) reducing compression on the composition to a second pressure to induce a phase transition in the composition to a disordered state, thereby storing energy.
A 2D perovskite composition comprising:
- a) first and second layers of a transition metal halide;
- and
- b) an organic layer comprising a C>3 alkyl ammonium species selected from:
A 2D perovskite composition having formula [(R1)x(R2)1−x]2MXyX′4−y, wherein R1 and R2 are independently optionally substituted alkylammonium species, wherein X and X′ are different halides, wherein x is between 0-1, wherein y is 0-4, wherein M is a transition metal;
- and wherein if y=0 or 4, R1≠R2 and x≠0 or 1.
A barocaloric system comprising:
- a) a composition comprising an organic layer comprising optionally substituted C>3 alkyl chains, wherein the organic layer is between first and second inorganic layers or comprises a head group capable of hydrogen bonding, halogen bonding, and/or electrostatic interaction with a counterion;
- and
- b) a source of compression.
A barocaloric system comprising:
- a) a composition comprising an organic layer comprising optionally substituted C>3 alkyl chains;
- b) a pressure transmitting medium comprising one or more gases, wherein at least one gas of the one or more gases induces a change in a thermal property of the organic layer;
- and
- c) a source of compression.
Dependencies are inferred from the claim text.