Ut-battelle, Inc.

Surendra Kumar Martha

Nancy Johnston Dudney

Jagjit Nanda

Chengdu Liang

Gabriel M Veith

Yoongu Kim

Chaitanya Kumar Narula

Orlando Rios

Claus Daniel

Wyatt Evan Tenhaeff

Raymond Robert Unocic

Sreekanth Pannala

A lithium ion battery includes a positive electrode comprising carbon fibers, a binder composition with conductive carbon, and a lithium rich composition. The lithium rich composition comprises at least one selected from the group consisting of Li(My MzMw)Owhere x+y+z+w=, and where M, Mand Mare interchangeably manganese, nickel and cobalt, and LiM*M*O, where M* and M*are manganese and nickel, respectively, with x=. A negative electrode comprises carbon fibers having bound thereto silicon nanoparticles, and a mesophase pitch derived carbon binder between the silicon nanoparticles and the carbon fibers. An electrolyte is interposed between the positive electrode and the negative electrode. Methods of making positive and negative electrodes are also disclosed.

High energy density secondary lithium batteries

A composite Si-carbon fiber comprising a carbon matrix material with 1-90 wt % silicon embedded therein. The composite carbon fibers are incorporated into electrodes for batteries. The battery can be a lithium ion battery. A method of making an electrode incorporating composite Si-carbon fibers is also disclosed.

High capacity monolithic composite Si/carbon fiber electrode architectures synthesized from low cost materials and process technologies

A lithium ion battery includes an anode and a cathode. The cathode includes a lithium, manganese, nickel, and oxygen containing compound. An electrolyte is disposed between the anode and the cathode. A protective layer is deposited between the cathode and the electrolyte. The protective layer includes pure lithium phosphorus oxynitride and variations that include metal dopants such as Fe, Ti, Ni, V, Cr, Cu, and Co. A method for making a cathode and a method for operating a battery are also disclosed.

Lipon coatings for high voltage and high temperature Li-ion battery cathodes

A lithium ion battery includes a positive electrode comprising carbon fibers, a binder composition with conductive carbon, and a lithium rich composition. The lithium rich composition comprises at least one selected from the group consisting of Li(My MzMw)Owhere x+y+z+w=1, and xLiMnO(1&#x2212;x)LiMO, where x=0.2-0.7, and where M, Mand Mare interchangeably manganese, nickel and cobalt, and LiMMO, where M and Mare manganese and nickel, respectively, with x=0.5. A negative electrode comprises carbon fibers having bound thereto silicon nanoparticles, and a mesophase pitch derived carbon binder between the silicon nanoparticles and the carbon fibers. An electrolyte is interposed between the positive electrode and the negative electrode. Methods of making positive and negative electrodes are also disclosed.

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Knoxville, TN, United States of America

Surendra Kumar Martha