The Dow Chemical Company

Fmc Corporation

Union Oil Company of California

Molycorp, Inc.

Other

Molycorp Minerals, LLC

Fmc Corporation, Lithium Division

John L Burba, Iii

William C Bauman

Yuan Gao

Arthur E Read, Jr

Audrey L Barnes

Edward Bayer McNew

Richard Donald Witham

John F Engel

Christopher P Christenson

Marina Yakovleva

John M Lee

Thomas M Knobel

Richard A Wolcott

Peter A Doty

Steve A Sims

Edgar F Hoy

Robert E Davis

David S Wesson

Chun S Wang

Malcolm F Finlayson

Ha Q Pham

Ernest L Baker

Chai-Jing Chou

Avis L McCrary

Wilfred C Meyer

Arthur Daniels

Wilfred W Wilson

David Charles Daniel

Greene W Strother

Clive P Bosnyak

Clarence R Crabb

Nancy D Arabinick

Betty J Smith

Kyle B Benkendorfer

John L Alexander

William O Dalton

Andrea H Hazlitt

Susan K Falcone

Stanley F Simpson

The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The anodes of the invention are combined with a cathode including an active material, a separator that a separates the cathode and the anode, and an electrolyte in communication with the cathode and the anode. The present invention also includes a method of preparing an anode and a method of operating a secondary battery including the anode of the invention.

Lithium metal dispersion in secondary battery anodes

Arsenic is removed from water and other aqueous feeds by (1) treating the feed with a compound containing cerium in the +4 oxidation state, preferably cerium dioxide, to oxidize arsenic in the +3 oxidation state to arsenic in the +5 oxidation state and (2) removing the arsenic in the +5 oxidation state from the aqueous phase, normally by contacting the treated feed with alumina or other precipitating agent containing cations in the +3 oxidation state.

Water purification device for arsenic removal

Oxyanions of various contaminant elements, such as chromium, antimony, molybdenum, tungsten, vanadium and uranium, are removed from water and other aqueous feeds by treating the feed with (1) a sorbent comprising one or more rare earth compounds, usually mixed or supported on particulate solids having a cation exchange capacity less than 20 milliequivalents per 100 grams or (2) an aqueous solution of one or more soluble rare earth compounds.

Process using rare earths to remove oxyanions from aqueous streams

Process for removing arsenic from aqueous streams

The present invention is a secondary battery having a high specific capacity and good cycleability, and that can be used safely. The secondary battery is manufactured to include an anode formed from a host material capable of absorbing and desorbing lithium in an electrochemical system such as a carbonaceous material, and lithium metal dispersed in the host material. The freshly prepared anodes of the invention are combined with a positive electrode including an active material, a separator that a separates the positive electrode and the negative electrode, and an electrolyte in communication with the positive electrode and the negative electrode. The present invention also includes a method of preparing a freshly prepared anode and a method of operating a secondary battery including the anode of the invention.

Process for removing arsenic from drinking water

The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiCoAOwherein 0.96&#x2266;w&#x2266;1.05, 0&#x2266;x&#x2266;0.05, &#x2212;0.02&#x2266;y&#x2266;0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship ax+by&#x2266;c, wherein x={right arrow over (S)}&#x2022;{right arrow over (P)}; y={right arrow over (S)}&#x2022;{right arrow over (P)}; the vector {right arrow over (S)}is the x-ray spectrum for the LiCoAOcompound; the vectors {right arrow over (P)}and {right arrow over (P)}defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}between 15&#xb0; and 120&#xb0; using a 0.02&#xb0; step size and CuK&#x3b1; rays for a large sample set of lithium cobalt oxides and using the regression of {right arrow over (S)}of the sample set against the capacity fade after 50 cycles of a lithium coin cell that includes a lithium negative electrode and the lithium cobalt oxide as the positive electrode material and that is cycled between 3.0 and 4.3V at a constant current of C/3 during both charge and discharge cycles; and the values a, b and c are determined by using only the xand yvalues for LiCoAOcompounds in the sample set that have a capacity fade after 50 cycles of less than or equal to 15%.

Lithium cobalt oxides and methods of making same

A non-linear shaped charge perforator for use in perforating an oil and gas formation into which a wellbore has been drilled comprises a monolithic, axisymmetric metal case in which is disposed a main explosive charge between the front of the case, which is closed with a concave metal liner, and the closed back end of the case. The main explosive charge contains multiple initiation points, preferably two initiation points located about 180&#xb0; apart on the outside surface of the charge, so that when the perforator is detonated the main charge is initiated such that the metal liner is collapsed into a non-circular jet, preferably a fan-shaped jet, that pierces the casing of the wellbore and forms non-circular perforations, preferably slot-shaped perforations, in the surrounding formation.

Method and apparatus to improve perforating effectiveness using a unique multiple point initiated shaped charge perforator

The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula Li Co A O wherein 0.96&lE;w&lE;1.05, 0&lE;x&lE;0.05, &minus;0.02&lE;y&lE;0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship ax &plus;by &lE;c, wherein x &equals;{right arrow over (S)} &Circlesolid;{right arrow over (P)} ; y &equals;{right arrow over (S)} &Circlesolid;{right arrow over (P)} ; the vector {right arrow over (S)} is the x-ray spectrum for the Li Co A O compound; the vectors {right arrow over (P)} and {right arrow over (P)} defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)} between 15&deg; and 120&deg; using a 0.02&deg; step size and CuK&agr; rays for a large sample set of lithium cobalt oxides and using the regression of {right arrow over (S)} of the sample set against the capacity fade after 50 cycles of a lithium coin cell that includes a lithium negative electrode and the lithium cobalt oxide as the positive electrode material and that is cycled between 3.0 and 4.3V at a constant current of C/3 during both charge and discharge cycles; and the values a, b and c are determined by using only the x and y values for Li Co A O compounds in the sample set that have a capacity fade after 50 cycles of less than or equal to 15%.

The present invention is a composition comprising pellets, each of said pellets consisting essentially of an integral mass of polycrystalline material of randomly disposed crystals of hydrated alumina infused with an amount of LiX to produce LiX/Al(OH),having up to a mol fraction of 0.33 of LiX in the so-produced LiX/Al(OH),, wherein LiX is at least one compound selected from the group consisting of Li hydroxide, Li halide, Li nitrate, Li sulfate, and Li bicarbonate. The present invention further includes methods of preparing the composition and methods of recovery lithium values from brine using the composition.

Composition for the recovery of lithium values from brine and process of making/using said composition

The molecular weight of a polyolefin such as polypropylene is reduced, as evidenced by lowered viscosity and increased melt flow rate, by treatment with an inorganic peroxygen selected from metal persulfates, ammonium persulfates, and any mixtures thereof. The treatment avoids or minimizes the color or odor attendant treatment with organic peroxygens and the toxic products of organic persulfate decomposition, and avoids the special handling required with organic peroxides.

Process for modifying the rheology of polyolefins

Elastic solids having reversible stress-induced fluidity are prepared, e.g., by combining liquid formulations with a crystalline mixed metal hydroxide conforming substantially to the formula

Elastic solids having reversible stress-induced fluidity

The invention provides composites of organic polymeric compositions including a matrix of an organic polymer and a filler distributed throughout the matrix, the flier being present in the matrix substantially as separate particles, each about the fundamental particle size of the filler. The fillers are unique mixed metal hydroxide compositions that are obtainable in sub-micron size particles. These particles are layered and have a BET specific surface area in excess of about 100 m.sup.2 /g. An anion of the particulates is selected to be compatible with the organic polymer thereby providing ease of dispersion of the filler particles throughout the polymer matrix.

Polymeric composites with crystalline mixed metal hydroxide particles

Growing community of inventors

Lake Jackson, TX, United States of America

John L Burba, Iii