Ut-Battelle, Inc.

Martin Marietta Energy Systems, Inc.

Other

The University of Texas System

Lockheed Martin Energy Research Corporation

Nancy Johnston Dudney

Chengdu Liang

John B Bates

Jagjit Nanda

Gabriel M Veith

Surendra Kumar Martha

Zengcai Liu

Jane Y Howe

Zhan Lin

Chaitanya Kumar Narula

Beth Louise Armstrong

Adam Justin Rondinone

Michael Naguib Abdelmalak

Frederick S Baker

Wyatt Evan Tenhaeff

Sreekanth Pannala

Greg R Gruzalski

Yoongu Kim

Christopher F Luck

Sheng Dai

Orlando Rios

Claus Daniel

Jianlin Li

James O Kiggans, Jr

Edgar Lara-Curzio

Hsin Wang

Ezhiylmurugan Rangasamy

Raymond Robert Unocic

Cristian Ion Contescu

Srikanth Allu

Ke An

Robert L Sacci

Srdjan Simunovic

Edward W Hagaman

Andrew S Westover

Xi Chen

Lance W Gill

Mariappan Parans Paranthaman

James William Klett

Craig A Blue

Sergei V Kalinin

Gilbert Morris Brown

Tomonori Saito

Xiao-Guang Sun

Stephen Jesse

Timothy James McIntyre

Sergiy Kalnaus

Ronald D Ott

David C Harper

Alexander Johs

Hansan Liu

Michelle Lehmann

Nina Balke

Bernd J Neudecker

Gayatri Sahu

Jong Kahk Keum

Arumugan Manthiram

Grady Alexander Nunnery

Wujun Fu

Amit Kumar

Wunjun Fu

Gabriel M Vieth

Kim A Weatherspoon

Andrew K Kercher

Yiman Zhang

Max J Palmer

An improved gel composite electrolyte membrane and a method of its manufacture are provided. The method includes mixing polymer precursors, a lithium salt, and a ceramic filler in a vessel to form a mixture. The mixture is cast on a preheated substrate and cured to form a crosslinked composite electrolyte membrane. The composite electrolyte membrane is plasticized by immersing the composite electrolyte in a plasticizer to obtain a gel composite electrolyte membrane. The addition of a plasticizer and a ceramic filler synergistically and simultaneously act to improve the Litransference number and Liconductivity of the resulting composite electrolyte, exhibiting high ionic conductivity and mechanical stability as well improved cycling performance. The gel composite electrolyte membrane is particularly suitable for, but not limited to, lithium metal batteries.

Gel composite electrolyte membrane for lithium metal batteries

A method for manufacturing an improved thin film composite solid electrolyte is provided. The method includes spray coating an aqueous suspension of ceramic particles onto a substrate to form a ceramic thin film. The film is sintered to form a porous ceramic structure having an interconnected necked morphology that defines cavities. The cavities are backfilled with an polymer electrolyte, for example a crosslinkable poly(ethylene oxide) (PEO)-based polymer electrolyte. The resulting thin film composite solid electrolyte is highly ionically conductive and mechanically robust with good manufacturability, particularly suitable for, but not limited to lithium metal batteries. The present method represents a departure from conventional mixing-then-casting methods and instead includes the fabrication of a solid electrolyte having a high ceramic volume fraction, high ionic conductivity, low thickness, and good chemical stability with metallic lithium.

Method of manufacturing a thin film composite solid electrolyte

A solid ionically conductive composition (e.g., nanoparticles of less than 1 micron or a continuous film) comprising at least one element selected from alkali metal, alkaline earth metal, aluminum, zinc, copper, and silver in combination with at least two elements selected from oxygen, sulfur, silicon, phosphorus, nitrogen, boron, gallium, indium, tin, germanium, arsenic, antimony, bismuth, transition metals, and lanthanides. Also described is a battery comprising an anode, a cathode, and a solid electrolyte (corresponding to the above ionically conductive composition) in contact with or as part of the anode and/or cathode. Further described is a thermal (e.g., plasma-based) method of producing the ionically conductive composition. Further described is a method for using an additive manufacturing (AM) process to produce an object constructed of the ionically conductive composition by use of particles of the ionically conductive composition as a feed material in the AM process.

Ionically conductive powders and films, and methods of preparation

An electrode material includes a lithium active material composition. The lithium active material composition includes lithium and an active anode material. The lithium active material composition is coated with a lithium ion conducting passivating material, such that the electrode material is lithiated and pre-passivated. An electrode and a battery are also disclosed. Methods of making an electrode material, electrode and battery that are lithiated and pre-passivated are also disclosed.

Lithiated and passivated lithium ion battery anodes

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 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 battery electrode assembly includes a current collector with conduction barrier regions having a conductive state in which electrical conductivity through the conduction barrier region is permitted, and a safety state in which electrical conductivity through the conduction barrier regions is reduced. The conduction barrier regions change from the conductive state to the safety state when the current collector receives a short-threatening event. An electrode material can be connected to the current collector. The conduction barrier regions can define electrical isolation subregions. A battery is also disclosed, and methods for making the electrode assembly, methods for making a battery, and methods for operating a battery.

Current collectors for improved safety

A solid electrolyte for a lithium battery includes LiGeAsSwhere x=0 to 0.50. The value of x can be a range of any high value and any lower value from 0 to 0.50. For example, x can be 0.25 to 0.50, and x can be 0.3 to 0.4, among many other possible ranges. In one embodiment x=0.33 such that the solid electrolyte is LiGeAsS. A solid electrolyte for a lithium battery can include LiAsSwherein &#xbd; to &#x2154; of the As is substituted with Ge. A lithium battery and a method for making a lithium battery are also disclosed.

High-conduction GE substituted LiAsS4 solid electrolyte

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.

An electrode and a related method of manufacture are provided. The electrode includes a self-aligning active material having short fiber powders with a cylindrical morphology to increase the packing density from 0.74 to nearly 0.91. The short fiber powders self-align during a slurring coating process as a result of shear forces between a die and a foil. The resulting coating includes parallel short fibers in a closed packed arrangement, providing an increased volumetric capacity of at least approximately 17%.

Method of manufacturing high volumetric density electrodes from self-aligning fiber powders

A lithium sulfur cell has a cathode including LiPS(0&#x3c;n&#x3c;9), an electrolyte, and an anode comprising lithium. A cathode for a lithium sulfur cell is also disclosed.

Lithium-conducting sulfur compound cathode for lithium-sulfur batteries

The invention is directed in a first aspect to a sulfur-carbon composite material comprising: (i) a bimodal porous carbon component containing therein a first mode of pores which are mesopores, and a second mode of pores which are micropores; and (ii) elemental sulfur contained in at least a portion of said micropores. The invention is also directed to the aforesaid sulfur-carbon composite as a layer on a current collector material; a lithium ion battery containing the sulfur-carbon composite in a cathode therein; as well as a method for preparing the sulfur-composite material.

Sulfur-carbon nanocomposites and their application as cathode materials in lithium-sulfur batteries

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Knoxville, TN, United States of America

Nancy Johnston Dudney