Rockwood Lithium GmbH

Frankfurt am Main, Germany

Rockwood Lithium GmbH

Frankfurt am Main, Germany

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Patent
Rockwood Lithium GmbH and Volkswagen AG | Date: 2014-10-27

Process for producing an active material for batteries from lithium sulfide and ionic liquids, corresponding active materials, cathode materials, batteries and corresponding uses.


The invention relates to a method for producing aprotic solutions that contain zinc bromide and lithium bromide, the reaction of the reactants to the product being carried out as a one-pot reaction.


Patent
Rockwood Lithium Gmbh | Date: 2014-05-14

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.


A solution of a mixed alkaline earth alkoxide compound with an aluminum compound in an aprotic solvent, and methods of making and using them.


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_(2), N_(x)H_(y )with 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 C., preferably between 100 and 280 C., and particularly preferably above the melting temperature of lithium of 180.5 C., in an inert organic solvent under dispersion conditions or in an atmosphere that contains a gaseous coating agent containing nitrogen.


Described is a coated, (partly) lithiated graphite powder characterized in that it has been produced in a non-electrochemical process from metallic lithium and graphite in powder form and has been stabilized outside an electrochemical cell by application of a coating layer; and a galvanic cell comprising a cathode, a lithium-conductive electrolyte-separator system and an anode comprising a coated, (partly) lithiated graphite powder, where the (partial) lithiation and the coating of the graphite powder are performed non-electrochemically outside the galvanic cell (ex situ).


The invention relates to a galvanic cell containing a cathode, a lithium-conductive electrolyte separator system, and a synthetic graphite-containing anode. In the manufacture of the cell (i.e. prior to the first charging cycle), the anode contains or consists of a (partially) lithiated graphite powder which is produced from synthetic graphite and lithium powder in a non-electrochemical manner. The invention also relates to a method for (partially) lithiating synthetic graphite in an electroless manner. The invention is characterized in that the particulate synthetic graphite is (partially) lithiated in an electroless manner after mixing with particulate lithium metal powder and by means of a mixing and/or milling process, thereby forming Li graphite intercalates of the composition LiC_(x )(mit x=6600).


Patent
Rockwood Lithium Gmbh | Date: 2013-12-12

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


Grant
Agency: European Commission | Branch: FP7 | Program: CP-FP | Phase: GC.NMP.2012-1 | Award Amount: 3.74M | Year: 2012

This project is aimed to the identification and development of nanostructured electrode and electrolyte materials to promote the practical implementation of the very high energy lithium-sulfur battery. In particular, the project will be directed to the definition and test of a new, lithium metal-free battery configuration based on the use of lithiated silicon as the anode and a nanostructured sulfur-carbon composite as the cathode. It is expected that this battery will offer an energy density at least three times higher than that available from the present lithium battery technology, a comparatively long cycle life, a much lower cost (replacement of cobalt-based with a sulfur-based cathode) and a high safety degree (no use of lithium metal). All the necessary steps for reaching this goal are considered, starting from material synthesis and characterization, exploiting nanotechnology for improving rate capability and fast charging, the fabrication and test of large scale prototypes and to the completion of the cycle by setting the conditions for the recycling process. A team of experts have been selected as partners of the project, including a number of academic laboratories, all with worldwide recognized experience in the lithium battery field, whose task will be that of defining the most appropriate electrode and electrolyte nanostructures. The project will benefit by the support of a laboratory expert in battery modeling to provide the theoretical guidelines for materials optimization. Large research laboratories, having advanced and modern battery producing machineries will be involved in the preparation and test of middle size battery prototypes. Finally, chemical and battery manufacturing industries will assure the necessary materials scaling-up and the fabrication and test of large batteries and particular attention will be devoted to the control of the safety and to definition and practical demonstration of its most appropriate recycling process.


Grant
Agency: European Commission | Branch: FP7 | Program: MC-ITN | Phase: FP7-PEOPLE-2013-ITN | Award Amount: 4.05M | Year: 2013

Finding novel solutions for energy storage is of high societal relevance, since it is a prerequisite for the turnaround from fossil fuels and nuclear power to energy from renewable sources, since these sources mostly are intermittent. Also for providing an ecological friendly mobility, high capacity energy storage solutions are urgently needed. Well trained experts in energy storage are a prerequisite of the necessary technological development. ECOSTORE contributes to these targets by training 12 ESRs and 3 ERs in materials science and use of novel metal hydrides for energy storage chemical, as hydrogen, and electrochemical, in batteries. The fellows will be trained in scientific skills by pursuing own research projects (leading to a PhD in the case of ESR) as well as in complementary skills, important for their future career in academia or industry, like management of scientific and technical projects, science-public communication and development of their own career and personality. ECOSTORE is an international network of partners each with high reputation in the field of hydrogen and electrochemical storage. 9 European research institutions, 3 European industrial companies, and 2 Associated Partners from Japanese Universities form a network of complementary scientific and techno-economical expertise. Novel borohydride- and nitride based materials may allow for high energy storage densities in terms of both hydrogen and electrochemical processes. For commercial introduction, a prerequisite is the cost efficient large scale production from abundant and relatively cheap raw materials, going from extremely pure chemicals and laboratory-scale to less pure raw materials and industrial scale. ECOSTORE aims at the scientific understanding of materials behaviour in hydrogen as well as in electrochemical processes, and, based on this, at scale-up of cost effective materials production, and at prototype testing to perform a techno-economical evaluation of the developments

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