Toyota Motor Engineering & Manufacturing North America, Inc.

T/j Technologies, Inc.

University of California

The University of New Mexico

Toyota Motor Corporation

The University of Waterloo

Toyota Jidosha Kabushiki Kaisha

Kimber Lee Stamm

Monique Nathalie Richard

John Muldoon

Pu Zhang

Liya Wang

Suresh Mani

Junqing Ma

Shih-Chieh Yin

Brian Glomski

Emilyne E Nicolas

Jonathan Phillips

Fred Wudl

Wen Li

Paul Timothy Fanson

Kyu-Tae Lee

Bruce S Dunn

Claudia Luhrs

Shoji Yokoishi

John M Miller

Erik Menke

Linda F Nazar

Xiulei Ji

Aaron Dehne

Chris Silkowski

Grant Umeda

Brittnee Veldman

Monique N Richard

A composition for use in an electrochemical cell is disclosed wherein the composition includes a clean metal substantially free of impurities and a layer of protective material in contact with the clean metal. Further disclosed is an electrochemical cell including a metal film comprising a clean metal substantially free of impurities. The electrochemical cell may further include an electrolyte and a layer of protective material disposed between the electrolyte and the metal film. A process for manufacturing an electrode is further disclosed including preparing a metal film comprising a clean metal substantially free of impurities and depositing a layer of protective material on to the metal film.

Electrode compositions and processes

A process for forming a protective layer on a metal surface includes the steps of: providing a metal material having an oxygen containing layer; applying at least two compounds to the oxygen containing layer of the metal material wherein a first compound applied is a molecularly large compound; and applying at least a second compound to the oxygen containing layer of the metal material wherein the second compound is molecularly small.

Method of chemical protection of metal surface

An electrode material having carbon and sulfur is provided. The carbon is in the form of a porous matrix having nanoporosity and the sulfur is sorbed into the nanoporosity of the carbon matrix. The carbon matrix can have a volume of nanoporosity between 10 and 99%. In addition, the sulfur can occupy between 5 to 99% of the nanoporosity. A portion of the carbon structure that is only partially filled with the sulfur remains vacant allowing electrolyte egress. In some instances, the nanoporosity has nanopores and nanochannels with an average diameter between 1 nanometer and 999 nanometers. The sulfur is sorbed into the nanoporosity using liquid transport or other mechanisms providing a material having intimate contact between the electronically conductive carbon structure and the electroactive sulfur.

Sulfur-carbon material

Disclosed is a material having a composite particle, the composite particle including an outer shell and a core. The core is made from a lithium alloying material and the outer shell has an inner volume that is greater in size than the core of the lithium alloying material. In some instances, the outer mean diameter of the outer shell is less than 500 nanometers and the core occupies between 5 and 99% of the inner volume. In addition, the outer shell can have an average wall thickness of less than 100 nanometers.

Material with core-shell structure

An anode material made from nanoparticles, said anode material including a homogeneous mixture of lithium-alloying nanoparticles with active support matrix nanoparticles, is provided. The active support matrix nanoparticle is a compound that participates in the conversion reaction of the lithium battery. The compound is preferably a transition metal compound, with said compound including a nitride, carbide, oxide or combination thereof. An electrode manufactured from the anode material preferably has a porosity of between 5 and 80% and more preferably has a porosity between 10 and 50%. The anode material nanoparticles preferably have a mean linear dimension of between 2 and 500 nanometers, and more preferably have a mean linear dimension of between 2 and 50 nanometers.

Tin in an active support matrix

An anode material with lithium-alloying particles contained within a porous support matrix is provided. The porous support matrix preferably has a porosity of between 5 and 80% afforded by porosity channels and expansion accommodation pores, and is electrically conductive. More preferably the support matrix has a porosity of between 10 and 50%. The support matrix is made from an organic polymer, an inorganic ceramic or a hybrid mixture of organic polymer and inorganic ceramic. The organic polymer support matrix and can be made from a rod-coil polymer, a hyperbranched polymer, UV cross-linked polymer, heat cross-linked polymer or combination thereof. An inorganic ceramic support matrix can be made from at least one group IV-VI transition metal compound, with the compound being a nitride, carbide, oxide or combination thereof. The lithium-alloying particles are preferably nanoparticles with a mean linear dimension of between 5 and 500 nanometers, and more preferably have a mean linear dimension of between 5 and 50 nanometers.

High performance anode material for lithium-ion battery

Growing community of inventors

Ann Arbor, MI, United States of America

Kimber Lee Stamm