08-01-2015 дата публикации
Номер: US20150010826A1
Принадлежит:
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° C., preferably above the melting temperature of lithium of 180.5° C., in an organic, inert solvent. 115.-. (canceled)16. A stabilized particulate lithium metal , wherein it has a core of metallic lithium which is surrounded with an outer passivating layer containing one or more elements of main groups 3 and/or 4 of the periodic table of elements that can be alloyed with lithium.17. The stabilized particulate lithium metal of claim 16 , wherein the element that can be alloyed with lithium and is present in the outer layer is present in elemental form or as an alloy with lithium.18. The stabilized particulate lithium metal according to wherein it has a sodium content <200 ppm.19. The stabilized particulate lithium metal according to wherein it has a sodium content <200 ppm.20. The stabilized particulate lithium metal according to claim 16 , wherein it has a sodium content <100 ppm.21. The stabilized particulate lithium metal ...
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