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Rechargeable electrochemical Li-ion battery cells

A lithium-ion battery, electrochemical technology, applied in the field of electrochemical lithium-ion battery cells

Active Publication Date: 2020-12-11
BELENOS CLEAN POWER HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is the use of electrolyte in this step, which must be rinsed off prior to the assembly of the monolith

Method used

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  • Rechargeable electrochemical Li-ion battery cells
  • Rechargeable electrochemical Li-ion battery cells
  • Rechargeable electrochemical Li-ion battery cells

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0023] figure 1 A schematic cross-sectional view of an electrochemical cell 1 according to the invention is shown. In the example shown, the electrochemical cells are prepared for a stack cell configuration, which can be configured in a so-called "pouch" format or in a button cell format. Obviously the invention is also applicable to cylindrical battery constructs, where electrodes are wound to form cylindrical cells.

[0024] The cell 1 comprises a positive electrode 2 comprising a first current collector and optionally a first active material initially containing active lithium in a quantity Q1, wherein said first active material is applied to the first current collector of the two sides. The cell 1 also includes a negative electrode 4 including a second current collector and a second active material, wherein the second active material is applied to both faces of the second current collector. The cell 1 also includes a separator 6 arranged between the positive electrode 2...

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Abstract

The present invention relates to a rechargeable electrochemical lithium ion battery cell. A rechargeable electrochemical lithium-ion battery cell (1) comprising: a positive electrode (2) comprising a first active material optionally initially containing active lithium in a quantity Q1; a negative electrode ( 4) comprising a second active material and having a surface on which an SEI passivation layer can be formed; and an electrolyte for lithium ions. Facing the negative electrode (4), the positive electrode (2) includes a perforated lithium sheet (8), the thickness and perforation pattern of the perforated lithium sheet (8) are selected to constitute a quantity Q2 of lithium, wherein the The quantity Q2 of lithium provided by the perforated lithium sheet (8) and the quantity Q1 of active lithium provided by the first active material of the positive electrode (2) when the first active material initially contains active lithium constitute sufficient for The necessary amount of lithium in equilibrium of the electrochemical monomer (1).

Description

technical field [0001] The present invention relates to a rechargeable electrochemical lithium ion battery cell comprising: a positive electrode comprising a first active material optionally initially containing a quantity Q1 of active lithium; a negative electrode comprising The second active material and has a surface on which a solid electrolyte interphase (SEI) passivation layer can be formed; and an electrolyte for lithium ions. The invention also relates to a process for producing such electrochemical cells and rechargeable lithium-ion batteries comprising such electrochemical cells. Background technique [0002] Such electrochemical cells have traditionally been used in forming rechargeable lithium-ion batteries. Lithium-ion batteries are electrochemical generators that use lithium in ionic form. It releases electricity through the reversible exchange of lithium ions between the positive and negative electrodes. These positive and negative electrodes include an act...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M10/058
CPCH01M4/13H01M10/0525H01M10/058H01M4/139H01M4/134H01M4/366H01M4/382H01M4/405H01M4/587Y02E60/10Y02P70/50
Inventor C·皮特罗德
Owner BELENOS CLEAN POWER HLDG