Albemarle Germany Gmbh

Rockwood Lithium Gmbh

Basf Se Corporation

Christoph Hartnig

Ulrich Wietelmann

Ute Emmel

Oliver Gronwald

Stefan Scherer

Gunter Christ

Vera Nickel

Sebastian Lang

Thomas Justus Schmidt

Detlef Ott

Sven Schröter

Sven Schroter

The invention relates to particulate lithium metal composite materials, stabilized by alloy-forming elements of the third and fourth primary group of the PSE and method for production thereof by reaction of lithium metal with film-forming element precursors of the general formulas (I) or (II): [ARRRR]Li(I), or RRRA-O-ARRR(II), wherein RRRRRR=alkyl (C-C), aryl, alkoxy, aryloxy-, or halogen (F, Cl, Br, I), independently of each other; or two groups R represent together a 1,2-diolate (1,2-ethandiolate, for example), a 1,2- or 1,3-dicarboxylate (oxalate or malonate, for example) or a 2-hydroxycarboxylate dianion (lactate or salicylate, for example); the groups Rto Rcan comprise additional functional groups, such as alkoxy groups; A=boron, aluminum, gallium, indium, thallium, silicon, germanium, tin, lead; x=0 or 1 for B, Al, Ga, In, Tl; x=0 for Si, Ge, Sn, Pb; in the case that x=0 and A=B, Al, Ga, In, Tl, Ris omitted, or with polymers comprising one or more of the elements B, Al, Ga, In, Tl, Si, Ge, Sn, Pb, at temperatures between 50 and 300&#xb0; C., preferably above the melting temperature of lithium of 180.5&#xb0; C., in an organic, inert solvent.

Stabilized lithium metal impressions coated with alloy-forming elements and method for production thereof

The present invention relates to methods for providing an active lithium reservoir to reduce the irreversible initial losses and as a general lithium source of or for electrode materials and lithium batteries, and a powdered lithium-donating material having an electrochemical potential of 0.5 and 2 V vs. Li/Li, which has been selected from the group of lithium hydride, lithium amide, lithium imide and tetra-lithium ammonium hydride, is used as a general lithium source.

Active lithium reservoir for lithium-ion batteries

The invention relates to particulate lithium metal formations having a substantially spherical geometry and a core composed of metallic lithium, which are enclosed with an outer passivating but ionically conductive layer containing nitrogen. The invention further relates to a method for producing lithium metal formations by reacting lithium metal with one or more passivating agent(s) containing nitrogen, selected from the groups N, NHwith x=1 or 2 and y=3 or 4, or a compound containing only the elements C, H, and N, and optionally Li, at temperatures in the range between 60 and 300&#xb0; C., preferably between 100 and 280&#xb0; C., and particularly preferably above the melting temperature of lithium of 180.5&#xb0; C., in an inert organic solvent under dispersion conditions or in an atmosphere that contains a gaseous coating agent containing nitrogen.

Stabilized lithium metal formations coasted with a shell containing nitrogen, and a method for the production of same

A lithium anode containing spherical lithium metal particles with an average diameter of between 5 and 200 &#x3bc;m, which are bonded with a fluorine-free rubber-like binding agent from the groups

Lithium powder anode

A particulate lithium metal composite materials having a layer containing phosphorous and a method for producing said phosphorous-coated lithium metal products, characterized in that melted, droplet-shaped lithium metal is reacted in a hydrocarbon solvent with a phosphorous source that contains the phosphorous in the oxidation stage 3, and use thereof for the pre-lithiation of electrode materials and the production of battery anodes.

Phosphorous-coated lithium metal products, method for production and use thereof

A particulate lithium metal/lithium sulfide composite material, to a method for producing a LiS@C-coated lithium metal product, and to the use of said lithium metal product. The particulate lithium metal/lithium sulfide composite material has a core-shell morphology, the shell of which is made of a lithium sulfide containing C and the core of which is made of metal lithium. According to the method, the particulate lithium metal/lithium sulfide composite material is produced by reacting melted, drop-shaped lithium metal in a hydrocarbon solvent with a sulfur source selected from the group CS, S, HS, COS, SO, SOor mixtures thereof. The method products according to the invention are used to produce lithium battery electrodes.

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The present invention relates to improved membrane electrode assemblies and fuel cells with long lifetime, comprising two electrochemically active electrodes separated by a polymer electrolyte membrane based on polyoxazoles.

Membrane electrode assemblies and fuel cells with long lifetime

The present invention relates to a membrane electrode assembly comprising at least two electrochemically active electrodes separated by at least one polymer electrolyte membrane, the aforementioned polymer electrolyte membrane having fibrous reinforcing elements which at least partly penetrate the polymer electrolyte membrane, wherein at least some of the fibrous reinforcing elements have functional groups which have a covalent chemical bond between the fibers and the polymer of the polymer electrolyte membrane. The membrane electrode assembly is suitable for applications in fuel cells, especially in high-temperature polymer electrolyte fuel cells.

Growing community of inventors

Eppstein, Germany

Christoph Hartnig