Metal-air cell comprising an electrolyte with a room temperature ionic liquid and hygroscopic additive

Title: Metal-air cell comprising an electrolyte with a room temperature ionic liquid and hygroscopic additive

An electrochemical cell comprising an electrolyte comprising water and a hydrophobic ionic liquid comprising positive ions and negative ions. The electrochemical cell also includes an air electrode configured to absorb and reduce oxygen. A hydrophilic or hygroscopic additive modulates the hydrophobicity of the ionic liquid to maintain a concentration of the water in the electrolyte is between 0.001 mol % and 25 mol %.

Inventors:: Friesen, Cody A.; Krishnan, Ramkumar; Tang, Toni; Wolfe, Derek

Issue Date:: 2014-08-19

OSTI Identifier:: 1150708

Assignee:: ARPA-E

Patent Number(s):: 8,808,929

Application Number:: 13/085,714

Contract Number:: AR-00000038

Research Org:: ARPA-E (USDOE Advanced Research Projects Agency - Energy (ARPA-E))

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

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Other works cited in this record:

Metal-Air Low Temperature Ionic Liquid Cell
patent-application, November 2010

Friesen, Cody A.; Buttry, Daniel A.
US Patent Document 12/776962; 20100285375
URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100285375%22.PGNR.&OS=DN/20100285375&RS=DN/20100285375

Metal-Air Battery With Improved Environmental Stability
patent-application, February 2011

Burchardt, Trygve; Lanfranconi, Michael
US Patent Application\t12/847405; 20110027664
URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220110027664%22.PGNR.&OS=DN/20110027664&RS=DN/20110027664

Lithium-air batteries using hydrophobic room temperature ionic liquid electrolyte
journal, August 2005

Kuboki, Takashi; Okuyama, Tetsuo; Ohsaki, Takahisa
Journal of Power Sources, Vol. 146, Issue 1-2, p. 766-769
DOI: 10.1016/j.jpowsour.2005.03.082

Novel zinc ion conducting polymer gel electrolytes based on ionic liquids
journal, December 2005

Xu, Jun John; Ye, Hui; Huang, Jian
Electrochemistry Communications, Vol. 7, Issue 12, p. 1309-1317
DOI: 10.1016/j.elecom.2005.09.011

Mixed ionic liquid as electrolyte for lithium batteries
journal, August 2005

Diaw, M.; Chagnes, A.; Carré, B.
Journal of Power Sources, Vol. 146, Issue 1-2, p. 682-684
DOI: 10.1016/j.jpowsour.2005.03.068

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