Fmc Corporation

Fmc Lithium USA Corp.

Other

Fmc Corporation, Lithium Division

Prakash Thyaga Palepu

Marina Yakovleva

Yuan Gao

B Troy Dover

Kenneth Brian Fitch

Yangxing Li

Christopher Jay Woltermann

Jian-xin Li

Brian Anthony Christopher Carlin

John F Engel

Robert J Adler

Jian-Xin Li

Troy B Dover

Brian Fitch

Michael E Leonowicz

Cheng-Kuang Wu

Brian Anthony Carlin

Anthony Christopher Carlin

The present invention provides a lithium metal powder protected by a substantially continuous layer of a polymer. Such a substantially continuous polymer layer provides improved protection such as compared to typical CO-passivation.

Stabilized lithium metal powder for Li-ion application, composition and process

The present invention provides a lithium metal powder protected by a wax. The resulting lithium metal powder has improved stability and improved storage life.

Stabilized lithium metal powder for li-ion application composition

A method of stabilizing lithium metal powder is provided. The method includes the steps of heating lithium metal to a temperature above its melting point, agitating the molten lithium metal, and contacting the lithium metal with a fluorination agent to provide a stabilized lithium metal powder.

Stabilized lithium metal powder for li-ion application, composition and process

The present invention is a positive electrode active material that can be used in secondary lithium and lithium-ion batteries to provide the power capability, i.e., the ability to deliver or retake energy in short periods of time, desired for large power applications such as power tools, electric bikes and hybrid electric vehicles. The positive electrode active material of the invention includes at least one electron conducting compound of the formula LiM{A}Oand at least one electron insulating and lithium ion conducting lithium metal oxide, wherein Mis a transition metal, {A} is represented by the formula &#x3a3;wBwherein Bis an element other than Mused to replace the transition metal Mand wis the fractional amount of element Bin the total dopant combination such that &#x3a3;w=1; Bis a cation in LiM{A}O; 0.95&#x2266;x&#x2266;2.10; 0&#x2266;y&#x2266;x/2; and 1.90&#x2266;z&#x2266;4.20. Preferably, the lithium metal oxide is LiAlOor LiMOwherein Mis at least one tetravalent metal selected from the group consisting of Ti, Zr, Sn, Mn, Mo, Si, Ge, Hf, Ru and Te. The present invention also includes methods of making this positive electrode active material.

Positive electrode active materials for secondary batteries and methods of preparing same

Apparatus and methods are disclosed for separating or fractionating particles of differing sedimentation rates in a fluid. For fractionation, the mixture is introduced into a tube and subjected to a cyclic sequence of alternating axial flows, with optional waiting periods of zero flow. The velocities and time periods of the individual flows in the cycle are adjusted so that particles of greater and lesser sedimentation rates tend to be driven in opposite directions. At the end of each cycle there is a step of resuspension of sedimented particles without axial dispersion and independent of axial flows.

Cyclic flow slurry fractionation

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Gastonia, NC, United States of America

Prakash Thyaga Palepu