Granted Patent
B2
US 12,549,114 · App. 18/306,860 · Granted Feb 10, 2026
Devices and methods for energy harvesting from air humidity
Assignee:
University of Massachusetts
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Abstract
Energy harvesting devices and methods are provided. An energy harvesting device includes an adsorption layer comprising a nanoporous material and at least two electrodes in operative arrangement with the adsorption layer. The nanoporous material comprises a nonbiological nanoporous material, a nonprotein biological nanoporous material, or a combination thereof. The adsorption layer and at least two electrodes are configured to generate a voltage differential on exposure of the adsorption layer to ambient moisture.
Claims (21)
1 . An energy harvesting device, comprising:
an adsorption layer comprising a nanoporous material, the nanoporous material comprising a nonbiological nanoporous material, wherein the nonbiological nanoporous material is an organic material;
at least two electrodes in operative arrangement with the adsorption layer, the adsorption layer and at least two electrodes configured to generate a voltage differential on exposure of the adsorption layer to ambient moisture.
2 . The energy harvesting device of claim 1 , wherein the nonbiological organic nanoporous material is selected from the following: poly(3,4-ethylenedioxythiophene) (PEDOT), poly(3-hexylthiophene) (P3HT), polyvinyl alcohol (PVA), Polylactic acid (PLA), poly vinyl phenol (PVP), Polyacrylonitrile (PAN), metal organic frameworks (MOFs).
3 . The energy harvesting device of claim 1 , wherein the nanoporous material is configured to generate an adsorption gradient of H 2 O within the device on exposure to humidity.
4 . The energy harvesting device of claim 1 , wherein the nanoporous material comprises nanoscale structures defining pores of less than about 500 nm.
5 . The energy harvesting device of claim 4 , wherein the nanoporous material comprises nanoscale structures defining pores of less than about 200 nm.
6 . The energy harvesting device of claim 4 , wherein a thickness of the adsorption layer is in a range of about 0.5 μm to about 500 μm.
7 . The energy harvesting device of claim 6 , wherein the pores extend through the thickness of the adsorption layer.
8 . The energy harvesting device of claim 1 , further comprising a storage element configured to store energy from current supplied by the adsorption layer and the at least two electrodes.
9 . The energy harvesting device of claim 1 , wherein the nanoporous material comprises at its surface at least one surface group capable of interacting with water molecules.
10 . The energy harvesting device of claim 9 , wherein the surface group is a hydroxyl group, a carbonyl group, a carboxyl group, or an amino group.
11 . The energy harvesting device of claim 1 , wherein the at least two electrodes are disposed at opposing surfaces of the adsorption layer, at opposing ends of the adsorption layer, or a combination thereof.
12 . An energy harvesting device, comprising:
a heterogeneous adsorption layer comprising at least two nanoporous materials, each nanoporous material comprising a nonbiological nanoporous material, wherein the nonbiological nanoporous material is an organic material;
at least two electrodes in operative arrangement with the adsorption layer, the adsorption layer and at least two electrodes configured to generate a voltage differential on exposure of the adsorption layer to ambient moisture.
13 . The energy harvesting device of claim 12 , wherein the at least two nanoporous materials are vertically arranged with respect to one another, are arranged in a planar format with respect to one another, or are arranged in a combination thereof.
14 . A method of harvesting energy from ambient moisture, comprising:
exposing an adsorption layer comprising a nanoporous material to ambient moisture, the nanoporous material comprising a nonbiological nanoporous material, wherein the nonbiological nanoporous material is an organic material;
with at least two electrodes in operative arrangement with the adsorption layer, generating a voltage differential on exposure of the adsorption layer to the ambient moisture.
15 . The method of claim 14 , further comprising storing energy from current supplied by the adsorption layer and the at least two electrodes.
Assignments (2)
CONFIRMATORY LICENSE
Recorded Feb 27, 2025
From: UNIVERSITY OF MASSACHUSETTS AMHERST
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 070345/0395 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jun 23, 2023
From: YAO, JUN; LIU, XIAOMENG
To: UNIVERSITY OF MASSACHUSETTS
Reel/Frame 064046/0490 →
Continuity (2)
Provisional Application
63363515
· Apr 25, 2022
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