Controlled hydrogen production from hydrolysable hydride gels

Patent metadata

Field	Value
Publication number	US-9985308-B2
Application number	US-201514738136-A
Country	US
Kind code	B2
Filing date	Jun 12, 2015
Priority date	Jun 12, 2015
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

Today, energy requiring equipment commonly relies on batteries for power. The excessive weight and size of batteries severely limits their performance. Described herein is a lightweight portable energy system which includes an ultra-high capacity hydrolysable hydride gel cartridge for use in supplying hydrogen gas to hydrogen based energy generators. Hydrolysable hydride reactivity is controlled by tuning the amounts of hydrophilic and hydrophobic content in a polymer gel encapsulant of the cartridge.

First claim

What is claimed is:

1. A hydrogen production system comprising:
a hydrolysable hydride gel material including a plurality of at least one type of hydrolysable hydride particle dispersed in a polymer material, wherein the polymer material comprises chemically bonded hydrophilic and hydrophobic monomers;
a hydrolysable hydride gel cartridge holding the hydrolysable gel material; and
a hydrolyzer having an input port and an output port, wherein the input port is configured to receive at least one of water and water vapor and the output port is configured to output hydrogen gas.

2. The system according to claim 1 , wherein the hydrolysable hydride gel material is a tuned material, having at least some of the plurality of hydrolysable hydride particles positioned at predetermined locations with respect to the hydrophobic and hydrophilic monomers to control timing of reactions of the at least some of the plurality of hydrolysable hydride particles.

3. The system according to claim 1 wherein the plurality of at least one type of hydrolysable hydride gel material is at least one of a water and water vapor controlled swelling composite.

4. The system according to claim 1 wherein the hydrolysable hydride particles have particle sizes in a range from 10 nanometers to 5 millimeters.

5. The system according to claim 1 wherein the hydrolysable hydride gel material is a water access control material, which controls access to the plurality of hydrolysable hydride particles.

6. The system according to claim 1 wherein the hydrolysable hydride gel cartridge and the hydrolyzer are integrated as a single component.

7. The system according to claim 1 wherein the hydrolysable hydride gel cartridge is a separate component detachable from the hydrolyzer.

8. The system according to claim 1 wherein the hydrolysable hydride gel cartridge is formed to provide multiple points of water and/or water vapor entry into an interior of the hydrolysable hydride gel cartridge, wherein the water and/or water vapor has access to the hydrolysable hydride gel material at multiple locations.

9. The system according to claim 1 wherein the hydrolysable hydride gel material is a mold-formed material, the form of the mold resulting in the gel material being formed in a shape corresponding to the mold.

10. An integrated power generating system comprising:
a hydrogen production system including:
a hydrolysable hydride gel material including a plurality of at least one type of hydrolysable hydride particle dispersed in a polymer material, wherein the polymer material comprises chemically bonded hydrophilic and hydrophobic monomers;
a hydrolysable hydride gel cartridge holding the hydrolysable hydride gel material; and
a hydrolyzer having an input port and an output port, wherein the input port is configured to receive at least one of water and water vapor and the output port is configured to output hydrogen gas;
a fuel cell configured to receive the hydrogen gas; and
a recycling system configured to recycle at least one of water and water vapor produced by operation of the fuel cell back to the input port of the hydrolyzer for use in hydrogen production.

11. The integrated power generating system of claim 10 further including a water vapor separator positioned to stop water vapor from being provided to the fuel cell.

12. The integrated power generating system of claim 10 further including a cooling system configured to receive at least one of water and water vapor generated by operation of the fuel cell and to move the at least one of water and water vapor into operational contact with the hydrolyzer to cool the hydrolyzer.

13. The integrated power generating system of claim 12 , wherein the cooling system further includes a heat exchanger in physical contact with the hydrolyzer.

14. A hydrogen production system comprising:
a hydrolysable hydride gel material including a plurality of at least one type of hydrolysable hydride particle dispersed in a polymer material, wherein the polymer material comprises an amphiphilic copolymer;
a hydrolysable hydride gel cartridge holding the hydrolysable gel material; and
a hydrolyzer having an input port and an output port, wherein the input port is configured to receive at least one of water and water vapor and the output port is configured to output hydrogen gas.

15. The system according to claim 14 wherein the amphiphilic copolymer is selected from the group consisting of polyethylene-block-poly(ethylene glycol) and poly(ethylene glycol)-block-poly(ϵ-caprolactone) methyl ether.

16. The system according to claim 1 wherein the hydrophilic monomer is selected from the group consisting of polyethylene glycol diacrylate, N,N-dimethylacrylamide, 1-vinyl-2-pyrrolidone, and ethoxylated bisphenol A diacrylate.

17. The system according to claim 1 wherein the hydrophobic monomer is selected from the group consisting of polyurethane, polyether, and polyester multifunctional acrylates.

18. The system according to claim 1 , wherein the hydrophilic monomer is selected from the group consisting of ethers, ethyleneoxide, vinylpyrrolidone, and urethanes; and wherein the hydrophobic monomer is selected from the group consisting of ethylene, alkyl acrylates and methacrylates, and aromatic substituted monomers.

Assignees

• Palo Alto Res Ct Inc

Inventors

• Iftime Gabriel
• Rivest Jessica Louis Baker
• Garner Sean R
• Sheridan Martin J
• Sahu Saroj Kumar

Classifications

• B29C35/02

  Heating or curing, e.g. crosslinking or vulcanizing {during moulding, e.g. in a mould}(cold vulcanisation B29C35/18 {; vulcanising tyres, presses therefor B29D30/0601}) · CPC title

• H01M8/04291

  Arrangements for managing water in solid electrolyte fuel cell systems (H01M8/04119 takes precedence) · CPC title

• B29K2075/00

  Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material · CPC title

• B29K2067/00

  Use of polyesters {or derivatives thereof}, as moulding material · CPC title

• H01M8/04164

  by condensers, gas-liquid separators or filters · CPC title