University of California

Juchen Guo

Vincent Lavallo

Scott G McArthur

Zheng Yan

Noam Hart

An electrode for use in a battery includes a silicon-carbon composite with graphite. The silicon-carbon composite structure is microporous. The silicon-carbon composite can be made by dry spraying and magnesiothermically reducing silicon, followed by deposition of carbon.

Silicon lithium ion electrode materials

The present disclosure provides electrolytes for an electrochemical device. In some embodiments, these electrolytes are Mg salts comprising 10-vertex or 12-vertex carborane anions. The present disclosure also provides processes for preparing electrolytes for an electrochemical device. In some embodiments, the process comprises reduction of a reactive cation complexed with a 10-vertex or 12-vertex carborane or 12-vertex borate anion to form metal carborane or borate electrolytes. In some embodiments, the process comprises comproportionating a Mg10-vertex or 12-vertex carborane salt to form a Mgelectrolyte comprising a 10-vertex or 12-vertex carborane. The present disclosure further provides electrochemical devices comprising the electrolytes disclosed herein. In some embodiments, the electrochemical device comprises an electrolyte that is stable at an electrical potential greater than 4 V vs Mg. Also provided herein are heterocyctes bearing the 10, 11, and 12 vertex carborane anions for application as catalyst and battery electrolyte components. The methods of making are also disclosed.

High voltage 10, 11, and 12-vertex carborane and borane electrolytes, their use in rechargable batteries, and processes for their preparation

A lithium-sulfide-carbon composite and methods are shown. In one example, the lithium-sulfide-carbon composites are used as an electrode in a battery, such as a lithium ion battery.

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Anaheim, CA, United States of America

Juchen Guo