摘要:
A particulate material is provided consisting of a plurality of porous particles comprising an electroactive material selected from silicon, germanium or a mixture thereof (especially a silicon-aluminium alloy), wherein the porous particles have a D 50 particle diameter in the range of 0.5 to 7 µm, an intra-particle porosity between 50 and 90%, and a pore diameter distribution having at least one peak in the range of 30 to 400 nm as determined by mercury porosimetry. Also provided are electrodes (especially anodes) and electrode compositions comprising the particulate material, a rechargeable metal-ion battery (especially a Li-ion battery) comprising the particulate material, and a process for the preparation of the particulate material. It is suggested that the claimed particulate material can be repeatedly lithiated without fracturing, allows easy access to the electrolyte and can be easily dispersed in an electrode slurry.
摘要:
A particulate material is provided consisting of a plurality of porous particles comprising an electroactive material selected from silicon, germanium or a mixture thereof, wherein the porous particles have a D 50 particle diameter in the range of greater than 5 to 25µm, an intra-particle porosity in the range of from 30 to 90%, and a pore diameter distribution having a peak in the range of from 50 to less than 400 nm as determined by mercury porosimetry. Also provided are electrodes and electrode compositions comprising the particulate material, a rechargeable metal-ion battery comprising the particulate material, and a process for the preparation of the particulate material.
摘要:
A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a separator provided between the positive electrode and the negative electrode, and a nonaqueous electrolytic solution at least held by the separator. The positive electrode has a positive electrode collector and a positive electrode mixture layer provided on the positive electrode collector. The positive electrode mixture layer has a first powder and a second powder. The first powder includes a first positive electrode active material, a first conductive material, and an organic-based binder. The second powder includes a second positive electrode active material, a second conductive material, and a water-based binder.
摘要:
Disclosed herein are certain embodiments of a novel chemical synthesis route for lithium ion battery applications. Accordingly, various embodiments are focused on the synthesis of a new active material using NMC (Lithium Nickel Manganese Cobalt Oxide) as the precursor for a phosphate material having a layered crystal structure. Partial phosphate generation in the layer structured material stabilizes the material while maintaining the large capacity nature of the layer structured material. Materials having a composition represented by: Lix Ni1/4 Mn1/4 Co1/4 P(1/4-y )O2,wherein 0≤x≤1, 0.001≤y≤0.25 and by: LixX(2/3+y)P(1/3-y)O2,wherein 0≤x≤1, 0.001≤y≤0.33, and X is Nickel or a combination of transition metal elements, can be prepared.
摘要翻译:本文公开了用于锂离子电池应用的新型化学合成路线的某些实施方案。 因此,各种实施方案集中在使用NMC(锂镍锰钴氧化物)作为具有层状晶体结构的磷酸盐材料的前体的新的活性材料的合成。 层状结构材料中的部分磷酸盐生成在保持层结构材料的大容量性质的同时稳定材料。 具有由Li x Ni 1/4 Mn 1/4 Co 1/4 P(1/4-y)O 2表示的组成的材料,其中0≤x≤1,0.1≤y≤0.25,并且由:LixX(2/3 + y) P(1/3-y)O 2,其中0≤x≤1,0.1≤y≤0.33,X是镍或过渡金属元素的组合。
摘要:
In a method of manufacturing a lithium-ion secondary battery electrode sheet proposed herein, a current collector (11), a powder material (13) of granulated particles, and a binder solution (12) are prepared. The binder solution (12) is applied onto the current collector (11). Subsequently, the powder material (13) of the granulated particles is fed onto the current collector (11). Then, the powder material (13) of the granulated particles is pressed against the current collector (11). In the basic manufacturing method, adhesive strength of the powder material (13) of the granulated particles is enhanced after the powder material (13) of the granulated particles is fed onto the current collector (11) and before or while the powder material (13) of the granulated particles is pressed against the current collector (11).
摘要:
Procédé de fabrication d'une batterie en couches minces entièrement solide comprenant les étapes successives suivantes: a)on dépose une couche comprenant au moins un matériau d'anode sur son substrat conducteur, b)on dépose une couche comprenant au moins un matériau de cathode sur son substrat conducteur, c)on dépose une couche comprenant au moins un matériau d'électrolyte solide sur au moins une couche obtenue à l'étape a) et/ou b); d)on dépose une couche d'un matériau polymère réticulé comportant des groupements ioniques dont l'épaisseur est inférieure à 10 µm, de préférence inférieure à 5 µm, et encore plus préférentiellement inférieure à 2 µm : - soit sur la couche de matériau d'anode revêtue d'une couche de matériau d'électrolyte solide et/ou sur la couche de matériau de cathode revêtue ou non d'une couche de matériau d'électrolyte solide; - soit sur la couche de matériau de cathode revêtue d'une couche de matériau d'électrolyte solide et/ou sur la couche de matériau d'anode revêtue ou non d'une couche de matériau d'électrolyte solide; e)on empile face sur face successivement une couche de matériau d'anode obtenue à l'étape a), c) ou d) avec une couche de matériau de cathode obtenue à l'étape b), c) ou d), étant entendu que l'empilement comprend au moins une couche de matériau d'électrolyte solide obtenue à l'étape c) et au moins une couche d'un matériau polymère réticulé obtenue à l'étape d); f)on effectue un traitement thermique et/ou une compression mécanique de l'empilement obtenu à l'étape e) pour obtenir une batterie en couches minces entièrement solide.
摘要:
The invention relates to a rechargeable electrochemical battery cell with a housing, a positive electrode (11), a negative electrode (10), and an electrolyte (9) which contains SO2 and a conductive salt of the active metal of the cell. At least one of the electrodes contains a binder selected from the group consisting of: binder A, which consists of a polymer that is made of monomer structural units of a conjugated carboxylic acid or the alkaline, alkaline earth, or ammonium salt of said conjugated carboxylic acid or a combination thereof, or binder B, which consists of a polymer that is based on monomer styrol and butadiene structural units, or a mixture of binders A and B.
摘要:
The present invention pertains to an electrode-forming composition, to use of said electrode-forming composition in a process for the manufacture of a composite electrode, to said composite electrode and to a secondary battery comprising said composite electrode.