Ut-battelle, Inc.

University of Minnesota

University of Tennessee Research Foundation

Eck Industries, Inc.

Craig A Bridges

Mariappan Parans Paranthaman

Orlando Rios

Jian-Ping Wang

Michael P Brady

Edgar Lara-Curzio

Zhonghe Bi

Lawrence F Allard

Gerard Michael Ludtka

Yanfeng Jiang

Xiaowei Zhang

Gilbert Morris Brown

Gabriel M Veith

Sukeun Yoon

Sheng Dai

David J Weiss

Hunter B Henderson

Xiao-Guang Sun

Zachary C Sims

Amelia M Elliott

Shihai He

Michael S Kesler

Roberta A Meisner

YanFeng Jiang

A method may include annealing a material including iron and nitrogen in the presence of an applied magnetic field to form at least one FeNphase domain. The applied magnetic field may have a strength of at least about 0.2 Tesla (T).

Applied magnetic field synthesis and processing of iron nitride magnetic materials

A reactive matrix infiltration process is described herein, which includes contacting a surface of a preform comprising reinforcement material particles with a molten infiltrant comprising a matrix material, the matrix material comprising an Al&#x2014;Ce alloy, whereby the infiltrant at least partially fills spaces between the reinforcement material particles by capillary action and reacts with the reinforcement material particles to form a composite material form, the composite material comprising the matrix material, at least one intermetallic phase, and, optionally, reinforcement material particles. A composite material form also is described, which includes a plurality of reinforcement material particles comprising a metal alloy or a ceramic, a matrix material at least partially filling spaces between the reinforcement material particles; and at least one intermetallic phase surrounding at least some of the reinforcement material particles. The reinforcement material particles and intermetallic phase together may form a gradient core-shell structure.

Reactive matrix infiltration of powder preforms

The disclosure describes techniques for forming nanoparticles including FeNphase. In some examples, the nanoparticles may be formed by first forming nanoparticles including iron, nitrogen, and at least one of carbon or boron. The carbon or boron may be incorporated into the nanoparticles such that the iron, nitrogen, and at least one of carbon or boron are mixed. Alternatively, the at least one of carbon or boron may be coated on a surface of a nanoparticle including iron and nitrogen. The nano particle including iron, nitrogen, and at least one of carbon or boron then may be annealed to form at least one phase domain including at least one of FeN, Fe(NB), Fe(NC), or Fe(NCB).

Iron nitride magnetic material including coated nanoparticles

Compositions and methods of making compositions are provided for nitride- and/or oxide-modified electrode compositions. In certain embodiments, the nitride- and/or oxide-modified compositions have the general formula MM'OFN. Such compositions may be used as bulk or surface compositions, and used in a battery as the anode or cathode. In other embodiments, the electrode includes a surface coating composition selected from metal nitrides and metal oxides, and a core composition having the formula MM&#x2032;OF, or an oxide fluoride.

Nitride- and oxide-modified electrode compositions and their methods of making

Compositions and methods of making are provided for surface modified electrodes and batteries comprising the same. The compositions may comprise a base composition having an active material capable of intercalating the metal ions during a discharge cycle and deintercalating the metal ions during a charge cycle, wherein the active material is selected from the group consisting of LiCoO, LiMnO, LiMnO, LiNiO, LiMnNiO, LiFePO, LiFePOF, LiCoNiMnO, Li(LiNiMnCo)O, LiMnNiMO, and mixtures thereof. The compositions may also comprise an annealed composition covering a portion of the base composition, formed by a reaction of the base composition in a reducing atmosphere. The methods of making comprise providing the base composition and annealing the base electrode in a reducing atmosphere.

Surface modifications for electrode compositions and their methods of making

Compositions and methods of making are provided for coated electrodes and batteries comprising the same. The compositions may comprise a base composition having an active material selected from the group consisting of LiCoO, LiMnO, LiMnO, LiNiO, LiMnNiO, LiFePO, LiFePOF, LiCoNiMnO, Li(LiNiMnCo)O, and mixtures thereof. The compositions may also comprise a coating composition that covers at least a portion of the base composition, wherein the coating composition comprises a non-metal or metalloid element. The methods of making comprise providing the base composition and a doped carbon coating composition, and mixing the coating composition with the base electrode composition at an elevated temperature in a flowing inert gas atmosphere. The coating composition may be a nitrogen-doped carbon composition a nitrogen doping element selected from the group consisting of: pyridine, 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, 1-ethyl-3-methylimidazolium dicyanamide, and mixtures thereof.

Coating compositions for electrode compositions and their methods of making

Compositions and methods of making are provided for treated mesoporous metal oxide microspheres electrodes. The compositions include microspheres with an average diameter between about 200 nanometers and about 10 micrometers and mesopores on the surface and interior of the microspheres. The methods of making include forming a mesoporous metal oxide microsphere composition and treating the mesoporous metal oxide microspheres by at least annealing in a reducing atmosphere, doping with an aliovalent element, and coating with a coating composition.

Mesoporous metal oxide microsphere electrode compositions and their methods of making

Compositions and methods of making are provided for treated mesoporous metal oxide microspheres electrodes. The compositions comprise (a) microspheres with an average diameter between 200 nanometers (nm) and 10 micrometers (&#x3bc;m); (b) mesopores on the surface and interior of the microspheres, wherein the mesopores have an average diameter between 1 nm and 50 nm and the microspheres have a surface area between 50 m/g and 500 m/g, and wherein the composition has an electrical conductivity of at least 1&#xd7;10S/cm at 25&#xb0; C. and 60 MPa. The methods of making comprise forming a mesoporous metal oxide microsphere composition and treating the mesoporous metal oxide microspheres by at least one method selected from the group consisting of: (i) annealing in a reducing atmosphere, (ii) doping with an aliovalent element, and (iii) coating with a coating composition.

Growing community of inventors

Oak Ridge, TN, United States of America

Craig A Bridges