Electrochemical device having electrolyte including disiloxane

• US 8,076,031 B1
• Filed: 02/10/2005
• Issued: 12/13/2011
• Est. Priority Date: 09/10/2003
• Status: Active Grant

• Current Assignee: Quallion, LLC (EnerSys), U Chicago Argonne, LLC
• Original Assignee: U Chicago Argonne, LLC
• Inventors: West, Robert C., Amine, Khalil, Zhang, Zhengcheng, Wang, Qingzheng, Rossi, Nicholas Agostino Antonio, Vissers, Donald R.
• Primary Examiner(s): HODGE, ROBERT W
• Application Number:
  US11/056,866
• Time in Patent Office: 2,497 Days
• Field of Search: None
• US Class Current: 429/313
• CPC Class Codes: C08G 77/14 containing silicon bound to oxygen-containing groups C08G77/045 takes precedence
• CPC Class Codes: C08G 77/46 containing polyether sequences
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0567 characterised by the additives
• CPC Class Codes: H01M 10/0568 characterised by the solutes
• CPC Class Codes: H01M 10/0569 characterised by the solvents
• CPC Class Codes: H01M 4/525 of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

One example of the disiloxanes include a backbone with a first silicon and a second silicon. The first silicon is linked to a first substituent selected from a group consisting of: a first side chain that includes a cyclic carbonate moiety; a first side chain that includes a poly(alkylene oxide) moiety; and a first cross link links the disiloxane to a second siloxane and that includes a poly(alkylene oxide) moiety. In some instance, the second silicon is linked to a second substituent selected from a group consisting of: a second side chain that includes a cyclic carbonate moiety, and a second side chain that includes a poly(alkylene oxide) moiety.

Claims

1. An electrochemical device comprising an electrolyte, wherein the electrolyte comprises a disiloxane represented by formula I:

2. The device of claim 1, wherein R₅ is represented by formula I-A and R₆ is represented by formula I-E.

3. The device of claim 1, wherein each organic spacer is selected from the group consisting of an unsubstituted alkylene, a substituted alkylene, an unsubstituted alkylene oxide, a substituted alkylene oxide, a substituted bivalent ether group, and an unsubstituted bivalent ether.