University of Colorado

Tesla, Inc.

Sillion, Inc.

Tyler Evans

Se-Hee Lee

Daniela Molina Piper

Vinay Bhat

Jerry Martin

Large-scale anodes containing high weight percentages of silicon suitable for use in lithium-ion energy storage devices and batteries, and methods of manufacturing the same, are described. The anode material described herein can include a film cast on a current collector substrate, with the film including a plurality of active material particles and a conductive polymer membrane coated over the active material particles. In some embodiments, the conductive polymer membrane comprises polyacrylonitrile (PAN). The method of manufacturing the anode material can include preparation of a slurry including the active material particles and the conductive polymer material, casting the slurry on a current collector substrate, and subjecting the composite material to drying and heat treatments.

Large-format battery anodes comprising silicon particles

The disclosure includes a composition of matter including a film formed on substantially all nSi-cPAN particles included in an electrode, the film including fluorine, oxygen, sulfur, carbon and lithium.

Stable silicon-ionic liquid interface lithium-ion batteries

Various embodiments of the present disclosure describe energy storage devices. In one example, an energy storage device includes an anode having a plurality of active material particles, a cathode having a transition metal oxide material, and an electrolyte including a room temperature ionic liquid to couple the anode to the cathode. Each of the plurality of anode active material particles have a particle size of between about one micrometer and about fifty micrometers. One or more of the plurality of anode active material particles are enclosed by and in contact with a membrane coating permeable to lithium ions.

Growing community of inventors

Broomfield, CO, United States of America

Tyler Evans