UChicago Argonne, LLC

Chi Cheung Su

Khalil Amine

Meinan He

Zhengcheng Zhang

Rachid Amine

Tianyuan Ma

Lei Cheng

Jiayan Shi

An electrochemical cell includes an anode that includes silicon, a conductive carbon, a lithium titanate, lithium metal, or a combination of any two or more thereof; a separator; a cathode having a cathode active material and a redox active species either mixed into the cathode or coated onto the cathode; and an electrolyte that includes a salt; and an aprotic solvent comprising a fluorinated ether solvent, a carbonate solvent, or a mixture thereof, with the proviso that the redox active species has substantially no solubility in the electrolyte. The redox active species may be a redox active organic compound or polymer.

Electroactive materials for secondary batteries

Described herein are fluoro-substituted ethers of Formula (I): wherein Ris a fluoro-substituted C-Calkyl group; Ris a C-Calkyl group or a fluoro-substituted C-Calkyl group; each Rindependently is H, F, methyl, or fluoro-substituted methyl; and n is 0, 1, 2, 3, or 4. The fluoro-substituted ether compounds are useful as solvents for lithium containing electrolytes in lithium batteries, particularly lithium-sulfur batteries.

Fluoro-substituted ethers and compositions

An electrolyte, electrochemical device, battery, capacitor, and/or the like include a salt; and a fluorinated organosulfate compound represented by Formula I: wherein, Ris H, OR, alkyl, alkenyl, alkynyl, aralkyl, or silyl; Ris H, OR, alkyl, alkenyl, alkynyl, aralkyl, or silyl; and Ris H, alkyl, alkenyl, alkynyl, aryl, heterocyclyl, heteroaryl, or siloxy; or where Rand Rjoin together to form a cyclic compound incorporating the &#x2014;O&#x2014;S(O)&#x2014;O&#x2014; group; wherein at least one Rand Ris fluorinated.

Electrolyte for high voltage lithium-ion batteries

A non-aqueous electrolyte comprising a salt, a non-aqueous solvent, and a compound of Formula (I), (II), or (III), where E is &#x2014;S(O)&#x2014; or S(O)&#x2014;: 

Non-aqueous electrolytes for electrochemical cells

An electrochemic device includes an electrolyte that includes a compound according to Formula (I): 

Electrolytes for lithium-ion batteries

An electrochemical cell includes a cathode active material, lithium metal, a separator, and an electrolyte including a lithium salt and a fluorinated glycol ether.

Electrolytes for lithium batteries

An electrochemical cell includes a cathode active material, lithium metal, a separator, and an electrolyte comprising a lithium salt, an organic aprotic solvent and a fluorinated sulfone represented by Formula II: 

Non-aqueous electrolytes for lithium batteries

The present invention provides an aqueous redox flow battery comprising a negative electrode immersed in an aqueous liquid negative electrolyte, a positive electrode immersed in an aqueous liquid positive electrolyte, and a cation-permeable separator between the negative electrolyte from the positive electrolyte. During charging and discharging, the electrolytes are circulated over their respective electrodes. The electrolytes each comprise a redox reactant. Redox reactant of the positive electrolyte comprises a compound of Formula (I) as described in the specification.

Growing community of inventors

Westmont, IL, United States of America

Chi Cheung Su