The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2014
Filed:
Aug. 18, 2009
Marshall C. Smart, Studio City, CA (US);
Kiah A. Smith, Milwaukee, WI (US);
Ratnakumar V. Bugga, Arcadia, CA (US);
Surya G. Prakash, Hacienda Heights, CA (US);
Frederick Charles Krause, San Francisco, CA (US);
Marshall C. Smart, Studio City, CA (US);
Kiah A. Smith, Milwaukee, WI (US);
Ratnakumar V. Bugga, Arcadia, CA (US);
Surya G. Prakash, Hacienda Heights, CA (US);
Frederick Charles Krause, San Francisco, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
The invention discloses various embodiments of Li-ion electrolytes containing flame retardant additives that have delivered good performance over a wide temperature range, good cycle life characteristics, and improved safety characteristics, namely, reduced flammability. In one embodiment of the invention there is provided an electrolyte for use in a lithium-ion electrochemical cell, the electrolyte comprising a mixture of an ethylene carbonate (EC), an ethyl methyl carbonate (EMC), a fluorinated co-solvent, a flame retardant additive, and a lithium salt. In another embodiment of the invention there is provided an electrolyte for use in a lithium-ion electrochemical cell, the electrolyte comprising a mixture of an ethylene carbonate (EC), an ethyl methyl carbonate (EMC), a flame retardant additive, a solid electrolyte interface (SEI) film forming agent, and a lithium salt.