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Title: Metal hydride-based thermal energy storage systems

The invention provides a thermal energy storage system comprising a metal-containing first material with a thermal energy storage density of about 1300 kJ/kg to about 2200 kJ/kg based on hydrogenation; a metal-containing second material with a thermal energy storage density of about 200 kJ/kg to about 1000 kJ/kg based on hydrogenation; and a hydrogen conduit for reversibly transporting hydrogen between the first material and the second material. At a temperature of 20.degree. C. and in 1 hour, at least 90% of the metal is converted to the hydride. At a temperature of 0.degree. C. and in 1 hour, at least 90% of the metal hydride is converted to the metal and hydrogen. The disclosed metal hydride materials have a combination of thermodynamic energy storage densities and kinetic power capabilities that previously have not been demonstrated. This performance enables practical use of thermal energy storage systems for electric vehicle heating and cooling.
Inventors:
;
Issue Date:
OSTI Identifier:
1397254
Assignee:
HRL Laboratories, LLC ARPA-E
Patent Number(s):
9,777,968
Application Number:
14/519,208
Contract Number:
AR0000173
Resource Relation:
Patent File Date: 2014 Oct 21
Research Org:
HRL Laboratories, LLC Malibu, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE

Other works cited in this record:

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patent, November 1982

Heat pump device
patent, October 1983

Hydrogen storage cell
patent, July 1986

Metal hydride based air cooling method and apparatus
patent, April 2004

Reconfigurable hydrogen transfer heating/cooling system
patent, May 2007

Hybrid hydrogen storage system and method using the same
patent, July 2014

Method and apparatus for tempering gaseous and/or liquid media in transportation vehicles, particularly in aircraft
patent-application, November 2005

Metal hydride based vehicular exhaust cooler
patent-application, December 2005

Reversible metal hydride thermal energy storage systems, devices, and process for high temperature applications
patent-application, August 2014

Effect of Ti Intermetallic Catalysts on Hydrogen Storage Properties of Magnesium Hydride
journal, June 2013
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journal, September 2010
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journal, November 2009
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High Temperature Metal Hydrides as Heat Storage Materials for Solar and Related Applications
journal, January 2009
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Metal hydride based heating and cooling systems: A review
journal, April 2010

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