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Method for Producing an Electrochemical Cell Comprising a Lithium Electrode, and Electrochemical Cell

A battery cell, electrochemical technology, applied in electrode manufacturing, lithium storage battery, electrode melt processing, etc., can solve the problems of high risk of liquid electrolyte, theoretical potential limitation of anode and cathode active materials, etc., to achieve less oiling or mechanical Defects, punchability improvement, effect of life improvement

Active Publication Date: 2019-04-02
BAYERISCHE MOTOREN WERKE AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today, liquid electrolytes can operate at cell voltages up to about 4.3–4.4 V, thus limiting the theoretical potential of anode and cathode active materials
[0005] Additionally, liquid electrolytes present a higher risk in failure situations due to their easy ignition properties

Method used

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  • Method for Producing an Electrochemical Cell Comprising a Lithium Electrode, and Electrochemical Cell

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Embodiment Construction

[0034] exist figure 1 The electrochemical cell 10 of the solid-state battery shown in FIG. 2 includes a negative electrode 12 , a positive electrode 14 , and a lithium-ion-conducting solid electrolyte 16 disposed between the negative electrode 12 and the positive electrode 14 . Negative electrode 12 and positive electrode 14 are disposed on opposite surfaces 18 , 20 of solid electrolyte 16 .

[0035] The solid electrolyte preferably consists of an oxidized or sulfided lithium ion conductor. As the active material for the positive electrode 14 it is preferable to use semimetal oxides such as Li(Ni 1 / 3 co 1 / 3 mn 1 / 3 )O 2 or conversion materials such as FeF 3 . The electrical conductor 22 arranged on the positive electrode 14 preferably consists of aluminum.

[0036] Negative electrode 12 comprises a layer 24 of metallic lithium which directly adjoins solid electrolyte 16 . It is preferable to use high-purity metallic lithium with a purity in the range of 99.8 to 99.9%. ...

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Abstract

The invention relates to a method for producing an electrochemical cell (10) for a solid-state battery comprising a negative electrode (12), a positive electrode (14) and a lithium-ion-conducting solid electrolyte (16) arranged between the negative electrode and the positive electrode, wherein the negative electrode (12) comprises a layer of metallic lithium (24) which directly adjoins the solid electrolyte (16). In order to produce the electrochemical cell (10), the layer of metallic lithium (24) is heated until it softens before being joined together with the solid electrolyte (16). An electrochemical cell (10) according to the invention comprises the negative electrode (12) comprising a layer of metallic lithium (24) which directly adjoins the solid electrolyte (16), and a layer of a lithium-metal alloy (26) on the layer of metallic lithium.

Description

technical field [0001] The invention relates to a method for producing an electrochemical cell having a metallic lithium electrode and an electrochemical cell produced according to this method, which are used in particular in solid-state batteries. Background technique [0002] Lithium-ion batteries are already used in many mobile devices. Furthermore, these batteries can also be used in hybrid and electric vehicles and for storing electricity from wind or solar installations. These batteries can be used as primary batteries for single use, or can be constructed as reusable secondary batteries (accumulators). [0003] Lithium-ion batteries generally consist of one or more electrochemical cells with a negative graphite electrode (anode during discharge) with an electrical conductor composed of copper, so The electrochemical cell has a positive electrode (cathode during discharge) consisting of a semi-metal oxide layer, the positive electrode has an electrical conductor such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/04H01M4/134H01M4/1395H01M10/052H01M10/0562H01M4/36H01M4/38H01M4/40
CPCH01M4/0407H01M4/0435H01M4/0471H01M4/0483H01M4/134H01M4/1395H01M4/366H01M4/382H01M4/405H01M10/052H01M10/0562H01M2200/10H01M2200/20Y02E60/10Y02P70/50H01M10/0525H01M10/0585H01M2004/027
Inventor D·安德烈S·施奈德S·尼恩贝格尔J-O·罗特D·许内曼B·什蒂亚斯尼C·施廷纳N·齐乌瓦拉斯T·韦尔勒T·蔡林格S·楚格曼
Owner BAYERISCHE MOTOREN WERKE AG
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