California Institute of Technology

Sienza Energy Inc.

Azin Fahimi

Isabelle M Darolles

Morteza Gharib

Adrianus I Aria

Jeffrey L Arias

Sean A Mendoza

Cong Wang

Shannon C Santana

Zarui S Chikneyan

Luciana Cendon

Battery electrodes using VACNT forests to create 3D electrode nanostructures, and methods of making, are described. The VACNTs are electrically and mechanically attached to the anode or cathode substrates, providing a large area of 3D surfaces for coating with active materials and high-conductivity electron pathways to the cell current collectors. A number of different active materials suitable for anodes and cathodes in lithium-ion batteries may be used to coat the individual carbon nanotubes. The high surface area provided by the VACNT forest and the nano-dimensions of the coated active materials enable both high energy-density and high power-density to be achieved with the same battery. Complete conformal coating of the individual CNTs may be achieved by a number of different methods, and coating with multiple active materials may be used to create nanolaminate coatings having improved electrochemical characteristics over single materials.

Atomic layer deposition on high-aspect-ratio electrode structures

Features for rechargeable lithium ion batteries, the batteries optionally employing vertically aligned carbon nanotube scaffolding, are described. Methods of manufacture and a solid polymer electrolyte are described for 3-dimensional battery architectures using the vertically aligned carbon nanotubes. Poly(ethylene)oxide bis(azide) and graphene poly(lactic acid) composite coatings are also described for use in such batteries or others.

Vertical carbon nanotube and lithium ion battery chemistries, articles, architectures and manufacture

Growing community of inventors

Pasadena, CA, United States of America

Azin Fahimi