摘要:
The invention relates to a cathode (A) for lithium ion accumulators, comprising (a1) at least one current collector, (a2) at least one layer comprising at least one cathode-active material which stores/releases lithium ions, at least part of layer (a2) having been compacted and/or the side of layer (a2) facing the anode having at least one layer (a3) which comprises at least one solid electrolyte which conducts lithium ions, said solid electrolyte being selected from the group consisting of inorganic solid electrolytes and mixtures thereof and being insoluble in the electrolyte system (B) used in the lithium ion accumulator, to lithium ion accumulators comprising the cathode (A) and to a process for producing the cathode (A).
摘要:
A mixture useful as an electrolyte in lithium ion batteries and use thereof are provided. Lithium ion batteries with good performance, especially good cyclability after prolonged operation are obtained. The mixture contains an aprotic organic solvent, a cyclic compound containing C1-C10-alkyl, C1-C10-alkoxy, C3-C10-cycloalkyl, benzyl or C6-C14-aryl, water, optionally an additive and a lithium salt.
摘要:
Particles comprising a mixed oxide of the general formula (I) Li1+aNibCocMndOz (I) in which the variables are each defined as follows: b is a number in the range from 0.25 to 0.45 c is a number in the range from 0.15 to 0.25 d=1−b−c, (1+a) is in the range from 1.05 to 1.20, 1.8+a≦z≦2.2+a, the particles having been fully or partially coated with one or more fluorides; and also a process for producing inventive particles and use of inventive particles.
摘要翻译:包含通式(I)Li1 + aNibCocMndOz(I)的混合氧化物的颗粒,其中各个变量各自定义如下:b为0.25至0.45c的数值,为0.15至0.25的数值 d = 1-bc,(1 + a)在1.05至1.20,1.8 + a @ z @ 2.2 + a的范围内,颗粒已经完全或部分地涂覆有一种或多种氟化物; 以及用于制造本发明颗粒的方法和使用本发明的颗粒。
摘要:
A mixture useful as an electrolyte in lithium ion batteries and use thereof are provided. Lithium ion batteries with good performance, especially good cyclability after prolonged operation are obtained. The mixture contains an aprotic organic solvent, a cyclic compound containing C1-C10-alkyl, C3-C10-cycloalkyl, benzyl or C6-C14-aryl, water, optionally an additive and a lithium salt.
摘要:
Electrochemical cells comprise (A) at least one cathode comprising at least one lithiated Mn-containing compound having an Mn content of from 60 to 80 mol %, based on transition metal in cathode (A), (B) at least one anode comprising carbon in electrically conductive form, (C) at least one electrolyte comprising (a) at least one aprotic organic solvent, (b) at least one lithium salt, and (c) at least one organic compound having at least one Si—N single bond per molecule.
摘要:
Electrochemical cells comprise (A) at least one cathode comprising at least one lithiated Mn-containing compound having an Mn content of from 60 to 80 mol %, based on transition metal in cathode (A), (B) at least one anode comprising carbon in electrically conductive form, (C) at least one electrolyte comprising (a) at least one aprotic organic solvent, (b) at least one lithium salt, and (c) at least one organic compound having at least one Si—N single bond per molecule.
摘要:
Monomer beads which can be obtained according to a process in which i. one or more aromatic tetraamino compounds are mixed with one or more aromatic carboxylic acids comprising at least two acid groups per carboxylic acid monomer in an extruder and melted at 190° C.-270° C.; ii. the melt is dropletized at 190° C.-270° C. by means of a die located at the extruder outlet; iii. the liquid droplets are collected, cooled and allowed to solidify. The monomer beads are particularly suited to the production of a proton-conducting polymer membrane based on polyazoles.
摘要:
A process for preparing a polyazole with an inherent viscosity, measured in at least 96% sulfuric acid at 25° C., greater than 2.9 dl/g, comprising the steps of i) mixing one or more aromatic tetraamino compounds with one or more aromatic carboxylic acids or esters thereof which comprise at least two acid groups per carboxylic acid monomer, or mixing one or more aromatic and/or heteroaromatic diaminocarboxylic acids, in polyphosphoric acid to form a solution and/or dispersion ii) heating the mixture from step i) under inert gas to temperatures in the range from 120° C. to 350° C. to form the polyazole, wherein in step ii), a mixture having a concentration of polyphosphoric acid, calculated as P2O5 (by acidimetric means), based on the total amount of H3PO4, polyphosphoric acid and water in the mixture, greater than 78.22%, is heated, the amounts of the components are selected in step i) such that the proportion by weight of the tetraamino compounds and of the aromatic carboxylic acids or esters thereof which comprise at least two acid groups per carboxylic acid monomer, or of the diaminocarboxylic acids of the mixture in step ii), based on the total weight of the mixture, is less than 11.0% by weight, the reaction mixture is heated in step ii) to greater than 220° C.
摘要翻译:制备具有特性粘度的聚唑的方法,其在25℃下的至少96%硫酸中测量,大于2.9dl / g,包括以下步骤:i)将一种或多种芳族四氨基化合物与一种或多种芳族化合物 每个羧酸单体包含至少两个酸基团,或在多磷酸中混合一种或多种芳族和/或杂芳族二氨基羧酸以形成溶液和/或分散体的羧酸或其酯ii)加热来自步骤i)的混合物, 在惰性气体下,在120℃至350℃的温度范围内,形成聚唑,其中在步骤ii)中,以P 2 O 5(通过酸度法)计算的具有多磷酸浓度的混合物 混合物中的H 3 PO 4,多磷酸和水的总量大于78.22%,在步骤i)中选择组分的量,使得四氨基化合物和芳族羧酸的重量比 或其在每个羧酸单体中包含至少两个酸基团的酯或其酯,或者基于混合物的总重量,步骤ii)中的混合物的二氨基羧酸的含量小于11.0重量%,反应混合物为 在步骤ii)中加热到大于220℃
摘要:
Monomer beads which can be obtained according to a process in which i. one or more aromatic tetraamino compounds are mixed with one or more aromatic carboxylic acids comprising at least two acid groups per carboxylic acid monomer in an extruder and melted at 190° C.-270° C.; ii. the melt is dropletized at 190° C.-270° C. by means of a die located at the extruder outlet; iii. the liquid droplets are collected, cooled and allowed to solidify. The monomer beads are particularly suited to the production of a proton-conducting polymer membrane based on polyazoles.
摘要:
The present invention relates to an electrolyte solution comprising at least one solvent as component A, at least one electrolyte as component B and from 0.1 to 20% by weight, based on the total electrolyte solution, of at least one heteroaromatic compound of the general formula (I) as component C, the use of such a compound in electrolyte solutions, the use of such an electrolyte solution in an electrochemical cell or for metal plating, and also electrochemical cells comprising a corresponding electrolyte solution.