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公开(公告)号：US20210371435A1
公开(公告)日：2021-12-02
申请号：US17258842
申请日：2019-06-28
发明人： Dirk DAWIDOWSKI , Annika HÖRBERG , Uwe LISCHKA , Theresa SCHMIDT , Johannes KLÖSENER , Ulrich WIETELMANN , Peter RITTMEYER , Stefan SCHNIPPERING
IPC分类号： C07F1/02
摘要： The object of the invention are solutions of alkali metal amides MNR1R2, wherein M is an alkali metal selected from Li, Na, K, Rb, Cs; R1 and R2 independently of one another are linear, branched or cyclic alkyl groups having 1 to 8 C atoms or together are a cycloalkyl radical, the alkali metal amides being present in methyltetrahydropyran or in a solvent mixture containing methyltetrahydropyran, and processes for their preparation.
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公开(公告)号：US20230163281A1
公开(公告)日：2023-05-25
申请号：US18150897
申请日：2023-01-06
发明人： Ulrich WIETELMANN , Ute EMMEL , Christopher KURTH , Stefan SCHERER , Thorsten BUHRMESTER , Gerd KRÄMER
IPC分类号： H01M4/38 , H01M4/36 , H01M4/66 , H01M4/583 , H01M10/0525
摘要： The invention relates to composite materials comprising lithiated or partially-lithiated graphite or graphene, and silicon having particles sizes from about 1 µm to about 100 µm, and that have an electrochemical rest potential less than about 2 V measured against Li/Li+, wherein graphitic material is mixed with silicon powder in a molar ratio of 9:1 to 1:9 and with lithium powder to an amount of the lithium in the composite material in the range of about 10 molar% to 100 molar% of the stochiometrically maximally possible lithium absorption, and to methods for production thereof.
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公开(公告)号：US20200240020A1
公开(公告)日：2020-07-30
申请号：US16848384
申请日：2020-04-14
发明人： Ulrich WIETELMANN
摘要： The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) R—COOR′, in which R stands for C10-C29 groups and R′ for H or C1-C8 groups.
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公开(公告)号：US20240059576A1
公开(公告)日：2024-02-22
申请号：US18259800
申请日：2022-01-03
发明人： Ulrich WIETELMANN , Ahmet KARACA , Johannes KLÖSENER , Mary SCHÄDER , Holger SCHWERIN , Henrike REMPEL , Katrin WESSELS , Rolf SANDERS , Alexander HÜBNER
IPC分类号： C01D15/02
CPC分类号： C01D15/02 , C01P2006/80
摘要： The invention relates to a process for the production of pure lithium oxide and its use, wherein lithium carbonate is reacted with finely divided, elemental carbon in powder form in the temperature range between 600 and 1200° C., wherein the two reactants are intensively premixed prior to the thermolysis process so that the bulk density of the mixture is reduced by at least 5%, preferably by at least 15%.
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