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Electrode for an Energy Accumulator and Manufacturing Method

An energy storage device and electrode technology, applied in the field of manufacturing such electrodes, energy storage device electrodes, and lithium ion batteries, can solve problems such as reducing ion conductivity, improve lifespan and cycle stability, increase battery weight, The effect of improving robustness

Active Publication Date: 2016-03-02
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the problem arises from the applied protective layer that the ionic conductivity is strongly reduced by the boundary resistance between lithium and protective layer

Method used

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  • Electrode for an Energy Accumulator and Manufacturing Method
  • Electrode for an Energy Accumulator and Manufacturing Method
  • Electrode for an Energy Accumulator and Manufacturing Method

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Embodiment Construction

[0040] from figure 1 The concentration profile 10 of the active anode material contained in a material composition and the concentration profile 12 of the lithium-ion-conducting component are obtained as a function of the layer thickness 14 of the layer structure to be applied. The layer structure comprises an active anode layer 18 in which largely only active anode material is present. Furthermore, the layer structure has a lithium-ion-conducting layer 16 , wherein the proportion or concentration of the active anode material gradually decreases with increasing layer thickness 14 of the applied lithium-ion-conducting layer 16 , which varies from the concentration of the active anode material It can be seen from the curve 10 that the proportion or concentration of the lithium-ion-conducting component in the lithium-ion-conducting layer 16 depends on the figure 1 The concentration change curve shown in 12 increases. This region of layer 16 conducting lithium ions is referred t...

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Abstract

The invention provides an electrode for an energy accumulator and a manufacturing method, and particularly relates to an electrode of a lithium-based energy accumulator. Then electrode comprises a substrate, an active anode layer (18) having an active anode material, the active anode material being at least partially a lithium, a lithium alloy and / or a lithium intercalation material, and at least one lithium-ion-conducting layer (16) having a material composition which gradually changes over a layer thickness (14), the material composition having at least one lithium-ion-conducting component. A method for forming an electrode for an energy accumulator, and a lithium-ion battery comprising an electrode are also disclosed.

Description

technical field [0001] The invention relates to an electrode for an energy store, in particular a lithium-based energy store, and a method for producing such an electrode. Furthermore, the invention relates to lithium-ion batteries. Background technique [0002] Lithium-ion batteries are known for a wide variety of applications as energy stores with a very high energy density. Such batteries play an important role in the electrification of automobiles, in addition to applications in laptops, smartphones, and the like. However, the currently achievable energy content of batteries allows only a limited operating range and a limited lifetime expressed in cycles at an acceptable battery weight. [0003] A lithium-ion battery, such as a lithium sulfide battery, basically includes a cathode, an anode, a separator disposed between the cathode and the anode, and an ion-conducting electrolyte. Lithium-containing anodes are known from the literature, which have a higher energy dens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M4/13H01M4/139H01M10/0525
CPCH01M4/13H01M4/139H01M4/366H01M4/38H01M4/382H01M4/405H01M10/0525H01M4/0421H01M4/62Y02E60/10H01M4/0402H01M4/0423H01M4/0428
Inventor M·滕策尔T·韦尔勒C·I·武尔姆
Owner ROBERT BOSCH GMBH
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