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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 C. and in 1 hour, at least 90% of the metal is converted to the hydride. At a temperature of 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.
Issue Date:
OSTI Identifier:
HRL Laboratories, LLC ARPA-E
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2014 Oct 21
Research Org:
HRL Laboratories, LLC Malibu, CA (United States)
Sponsoring Org:
Country of Publication:
United States

Works referenced in this record:

Heat pump device
patent, October 1983

Effect of Ti Intermetallic Catalysts on Hydrogen Storage Properties of Magnesium Hydride
journal, June 2013
  • Zhou, Chengshang; Fang, Zhigang Zak; Ren, Chai
  • The Journal of Physical Chemistry C, Vol. 117, Issue 25, p. 12973-12980
  • DOI: 10.1021/jp402770p

Effects of V content on hydrogen storage properties of V–Ti–Cr alloys with high desorption pressure
journal, September 2010
  • Kuriiwa, Takahiro; Maruyama, Takahiro; Kamegawa, Atsunori
  • International Journal of Hydrogen Energy, Vol. 35, Issue 17, p. 9082-9087
  • DOI: 10.1016/j.ijhydene.2010.06.024

Hydrogen Storage Properties of Nanosized MgH2−0.1TiH2 Prepared by Ultrahigh-Energy−High-Pressure Milling
journal, November 2009
  • Lu, Jun; Choi, Young Joon; Fang, Zhigang Zak
  • Journal of the American Chemical Society, Vol. 131, Issue 43, p. 15843-15852
  • DOI: 10.1021/ja906340u

High Temperature Metal Hydrides as Heat Storage Materials for Solar and Related Applications
journal, January 2009
  • Felderhoff, Michael; Bogdanović, Borislav
  • International Journal of Molecular Sciences, Vol. 10, Issue 1, p. 325-344
  • DOI: 10.3390/ijms10010325

Metal hydride based heating and cooling systems: A review
journal, April 2010