National Technology & Engineering Solutions of Sandia, LLC

Sandia Corporation

Kyle Ross Fenton

Ganesan Nagasubramanian

David Ingersoll

Chad Staiger

Travis Mark Anderson

Harry Pratt

Paul Gilbert Clem

Jon Ihlefeld

Susan Lynne Rempe

Cynthia Edney

Kevin Leung

Christopher Orendorff

Mangesh Chaudhari

A method for synthesizing a purified lithium (Li)anion binding agent (ABA-F)salt and the corresponding Li(ABA-F)are disclosed. The method includes dissolving a boron-based acid in a polar solvent to form a solution. The solution is refluxed to form an anion binding agent. A stoichiometric amount of a small fluorinated salt, such as LiF, is added to the anion binding agent to form a mixture. The mixture is subsequently crystallized to obtain a substantially pure Li(ABA-F)salt. Example purified Li(ABA-F)salts include Ox-Li(ABA-F), m-Li(ABA-F), and BF—Li(ABA-F). These purified Li(ABA-F)salts provide the benefits of increased battery thermal safety without loss of electrochemical performance.

Anion binding agent lithium salts for battery electrolytes

Organosilicon electrolytes exhibit several important properties for use in lithium carbon monofluoride batteries, including high conductivity/low viscosity and thermal/electrochemical stability. Conjugation of an anion binding agent to the siloxane backbone of an organosilicon electrolyte creates a bi-functional electrolyte. The bi-functionality of the electrolyte is due to the ability of the conjugated polyethylene oxide moieties of the siloxane backbone to solvate lithium and thus control the ionic conductivity within the electrolyte, and the anion binding agent to bind the fluoride anion and thus facilitate lithium fluoride dissolution and preserve the porous structure of the carbon monofluoride cathode. The ability to control both the electrolyte conductivity and the electrode morphology/properties simultaneously can improve lithium electrolyte operation.

Organosilicon-based electrolytes for long-life lithium primary batteries

The present invention is directed to a higher power, thin film lithium-ion electrolyte on a metallic substrate, enabling mass-produced solid-state lithium batteries. High-temperature thermodynamic equilibrium processing enables co-firing of oxides and base metals, providing a means to integrate the crystalline, lithium-stable, fast lithium-ion conductor lanthanum lithium tantalate (LaLiTaO) directly with a thin metal foil current collector appropriate for a lithium-free solid-state battery.

Solid-state lithium battery

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Albuquerque, NM, United States of America

Kyle Ross Fenton