摘要:
Methods, stacks and electrochemical cells are provided, in which the cell separator is surface- treated prior to attachment to the electrode(s) to form binding sites on the cell separator and enhance binding thereof to the electrode(s), e.g., electrostatically. The cell separator(s) may be attached to the electrode(s) by cold press lamination, wherein the created binding sites are configured to stabilize the cold press lamination electrostatically - forming flexible and durable electrode stacks. Electrode slurry may be deposited on a sacrificial film and then attached to current collector films, avoiding unwanted interactions between materials and in particular solvents involved in the respective slurries. Dried electrode slurry layers may be pressed or calendared against each other to yield thinner, smother and more controllably porous electrodes, as well as higher throughput. The produced stacks may be used in electrochemical cells and in any other type of energy storage device.
摘要:
Die Erfindung betrifft eine schichtförmige Elektrode (10), umfassend mindestens einen Stromsammler(20), mindestens eine Aktivmaterialschicht (30)und mindestens einen Festelektrolytschicht (40), dadurch gekennzeichnet, dass die Aktivmaterialschicht (30) auf mindestens einer Oberfläche O(S) des Stromsammlers (20) angeordnet ist und Vertiefungen (60) auf der von dem Stromsammler (20) abgewandten Oberfläche O(A) der Aktivmaterialschicht (30) ausgebildet sind, wobei eine Festelektrolytschicht (40) derart auf der mit den Vertiefungen (60) versehenen Oberfläche O(A) der Aktivmaterialschicht (30) angeordnet ist, sodass die Vertiefungen (60) wenigstens teilweise mit der Festelektrolytschicht (40) ausgefüllt sind. Ferner ist ein Verfahren zur Herstellung der Elektrode (10) sowie deren Verwendung offenbart.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung eines Elektrodenfilms (10), wobei aus Partikeln eines Polymerbinders (31) und Partikeln von Leitruß (32) durch Vormischen (101) eine Partikelmischung erzeugt wird, aus der Partikelmischung durch Kompaktierung (103) Agglomerate erzeugt werden, und wobei nach Zugabe (102) eines elektrochemischen Aktivmaterials (33) aus den Agglomeraten durch Walzen (106) oder Extrudieren (107) der Elektrodenfilm (10) erzeugt wird.
摘要:
Die Erfindung betrifft eine Kompositelektode mit Ableiter, der mit einer Elektrodenmasse umfassend aktives Elektrodenmaterial, Bindemittel und Leitruss beschichtet ist, wobei die Elektrodenmasse in Bezug auf Elektrodenmaterial und Leitadditivs einen Konzentrationsgradienten in Richtung der Elektrodendicke aufweist, der Konzentrationsgradient des aktiven Elektrodenmaterials in Richtung Ableiter zunimmt und der Konzentrationsgradient des Leitadditivs und Binder in Richtung Ableiter abnimmt. Zudem werden eine Lithiumionenbatterie umfassend die Kompositelektrode und zwei alternative Verfahren zur Herstellung der Kompositelektrode angegeben.
摘要:
A lithium metal oxide powder comprises secondary particles comprised of agglomerated primary lithium metal oxide particles bonded together, the primary lithium metal oxide particles being comprised of Li, Ni, Mn, Co and oxygen and having a median primary particle size of 0.1 micrometer to 3 micrometers, wherein the secondary particles have a porosity that is at least about 10%. The lithium metal oxide powders are useful make lithium ion battery having improved performance particularly when the secondary particles deagglomerate when forming the cathode used in the lithium ion battery.
摘要:
The present invention discloses a method of manufacturing a lithium-ion secondary battery electrode. The method includes the steps of: supplying composite particles (1), each containing an active material (2) and a binder (4), onto a sheet collector (42); and rolling the composite particles (1) supplied onto the collector (42), thus forming an active material layer (44). The rolling step includes a first rolling sub-step involving first rolling, and a second rolling sub-step to be performed after the first rolling sub-step. Rubber rolls (R1) are preferably used in the first rolling sub-step.
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:
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.