- Lexington MA, US David Ofer - Lexington MA, US Suresh Sriramulu - Lexington MA, US Kenan Sahin - Lexington MA, US Jane Rempel - Arlington MA, US
International Classification:
C01G 53/00 H01M 4/525
Abstract:
Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched with Al and Co. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.
Polycrystalline Metal Oxides With Enriched Grain Boundaries
- Lexington MA, US David Ofer - Needham MA, US Suresh Sriramulu - Arlington MA, US Kenan Sahin - Lexington MA, US Jane Rempel - Arlington MA, US
International Classification:
C01G 53/00 H01M 4/525
Abstract:
Provided are electrochemically active secondary particles that provide excellent capacity and improved cycle life. The particles are characterized by selectively enriched grain boundaries where the grain boundaries are enriched with Al and Co. The enrichment with Al reduces impedance generation during cycling thereby improving capacity and cycle life. Also provided are methods of forming electrochemically active materials, as well as electrodes and electrochemical cells employing the secondary particles.
Pre-Lithiated Electrode Materials And Cells Employing The Same
- Lexington MA, US Jane Rempel - Arlington MA, US Suresh Sriramulu - Arlington MA, US
International Classification:
H01M 4/505 H01M 4/525 H01M 10/0525 H01M 4/1391
Abstract:
Provided are compositions, systems, and methods of making and using pre-lithiated cathodes for use in lithium ion secondary cells as the means of supplying extra lithium to the cell. The chemically or electrochemically pre-lithiated cathodes include cathode active material that is pre-lithiated prior to assembly into an electrochemical cell. The process of producing pre-lithiated cathodes includes contacting a cathode active material to an electrolyte, the electrolyte further contacting a counter electrode lithium source and applying an electric potential or current to the cathode active material and the lithium source thereby pre-lithiating the cathode active material with lithium. An electrochemical cell is also provided including the pre-lithiated cathode, an anode, a separator and an electrolyte.
Camx Power
Executive Director
Camx Power 2014 - 2017
Principal
Tiax Llc 2014 - 2017
Principal
Tiax Llc 2008 - 2014
Associate Principal
Tiax Llc 2008 - 2011
Senior Technologist
Education:
Massachusetts Institute of Technology 2002 - 2007
Doctorates, Doctor of Philosophy, Chemical Engineering
University of Wisconsin - Madison 1998 - 2002
Bachelors, Bachelor of Science, Chemical Engineering, Mathematics
Skills:
R&D Nanotechnology Materials Science Research Chemical Engineering Chemistry Science Matlab Product Development Lifesciences Biotechnology Entrepreneurship Start Ups
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