WO2023017009A1 - Verfahren zur erhöhung der haftfestigkeit von aktivschichten in lithium-batterien - Google Patents
Verfahren zur erhöhung der haftfestigkeit von aktivschichten in lithium-batterien Download PDFInfo
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- WO2023017009A1 WO2023017009A1 PCT/EP2022/072294 EP2022072294W WO2023017009A1 WO 2023017009 A1 WO2023017009 A1 WO 2023017009A1 EP 2022072294 W EP2022072294 W EP 2022072294W WO 2023017009 A1 WO2023017009 A1 WO 2023017009A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/54—Controlling or regulating the coating process
- C23C14/541—Heating or cooling of the substrates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the invention relates to a method for increasing the adhesive strength of active layers in lithium batteries, in which a first silicon layer is deposited on a substrate, preferably made of copper, and is then subjected to short-term annealing.
- Si silicon
- the simplest way to fabricate silicon (Si) anodes for lithium batteries is to use layers of Si on a current collector.
- the capacity of the battery is determined by the Si thickness.
- Batteries are electrochemical energy stores and are divided into primary and secondary batteries.
- Primary batteries are electrochemical power sources in which chemical energy is irreversibly converted into electrical energy. A primary battery is therefore not rechargeable. Secondary batteries, also known as accumulators, on the other hand, are rechargeable electrochemical energy stores in which the chemical reaction taking place is reversible, so that multiple use is possible. Electrical energy is converted into chemical energy when charging, and from chemical energy to electrical energy when discharging.
- Battery is the generic term for interconnected cells.
- Cells are galvanic units consisting of two electrodes, electrolyte, separator and cell case.
- Figure 1 shows an exemplary structure and the function of a lithium-ion cell during the discharge process. The parts of a cell are briefly explained below.
- Each Li-ion cell consists of two different electrodes, one negatively charged when charged and one positively charged when charged. Since ions migrate from the negatively charged electrode to the positively charged electrode when energy is released, i.e. during discharge, the positively charged electrode is called the cathode and the negatively charged electrode is called the anode.
- the electrodes each consist of a current conductor, also known as a collector, and an active material applied to it.
- the ion-conducting electrolyte, which enables the necessary charge exchange, and the separator, which ensures the electrical separation of the electrodes, are located between the electrodes.
- the cathode consists, for example, of mixed oxides applied to an aluminum collector.
- the anode of the Li-ion cell can consist of a copper foil as the collector and a layer of carbon as the active material.
- natural or artificial graphite is used as the carbon compound, since it has a low electrode potential and exhibits low volume expansion during the charging and discharging process. During the charging process, lithium ions are reduced and embedded in the graphite layers.
- the cathode In lithium-ion battery (LiB) configurations, the cathode typically supplies the lithium atoms for charging and discharging in the anode, the battery capacity is therefore limited by the cathode capacity.
- Typical previously used cathode materials are z.
- Silicon as the active material for the anode has a high storage capacity of approx. 3579 mAh/g for the Li 15 Si4 phase at room temperature compared to the conventional carbonaceous materials such as e.g. B. Graphite with a storage capacity of 372 mAh/g, on .
- the capacity of the battery is determined by the thickness of the active layer, more precisely by the thickness of the Si layer.
- the electrical conductivity of the active material in a battery should be set as high as possible.
- silicon is poorly conductive, in contrast to conductive graphite. Therefore, silicon requires high doping or Structures that increase electrical conductivity.
- nanoscale silicon powders are surrounded by framework structures containing carbon and fixed to the current collector.
- the type of surface between the active material and the electrolyte largely determines the permeability for lithium ions.
- the surface is crucial for contact with the electrolyte and its decomposition products with the active layer.
- the electrolyte decomposes and partially reacts with the electrode material.
- a protective layer is formed (the SEI, solid electrolyte interphase), which prevents further decomposition and reaction of the electrolyte with the active layer, without sacrificing permeability To hinder lithium ions significantly.
- SEI solid electrolyte interphase
- WO 2017/140581 A1 describes a method for producing silicon-based anodes for secondary batteries.
- a silicon layer is deposited on a metal substrate, which serves as an integrated current collector, and then subjected to flash lamp annealing.
- the flash lamp annealing serves to accelerate the metal-induced layer exchange process or to promote crystallization between the metal substrate and the silicon layer and to increase adhesion.
- Multiple layers increase the stability and capacity of a battery.
- the different layers of a layer structure of the Si electrode (anode) are understood as layers.
- the layer structure is also referred to as a multi-layer structure or multi-layer structure.
- the adhesion of the layers, in particular of silicon, is strongly influenced by the roughness of the surface on which the silicon is applied.
- a high level of roughness creates a monolithic structure in the silicon layer, which improves adhesion. If the surface is sufficiently rough, additional cavities and thus separated nano- or microstructures .
- the targeted construction of these small-scale structures made of active material can not only improve adhesion, but also the nano or Microstructures also have a positive effect on battery life, since the volume expansion in the anode material is reduced by the free space between the Nanostructures can be collected and the phase transitions during alloy formation is facilitated by the reduction of the structures, which leads to an increase in the performance of the anode material.
- a rough surface generally serves to increase the mechanical adhesion of the layers to one another.
- Metallic surfaces are roughened mainly by wet or dry chemical etching of the surface.
- the dry etching processes include plasma etching or reactive ion beam etching.
- a further possibility is the targeted inhomogeneous deposition of metal on the surface, in which case an inhomogeneous deposition is understood to mean a deposition in which the metal atoms are deposited unevenly on the surface. Typical deposition processes are used for this, in which the surface energy has an influence on the layer structure.
- a chemical deposition e.g. B. a galvanic deposition at high current densities leads to a roughened surface.
- Roughening can also take place through a material whose cohesive forces are greater than the adhesive forces, e.g. B. a layer of gold on carbon that is tempered.
- Mechanical roughening such as embossing structures in a copper foil, which are then transferred to the deposited silicon (see FIG. 2), is another variant for increasing the roughness of the surface.
- the roughening processes are expensive and technologically demanding and have so far prevented them from being established on the market in battery construction.
- the Fraunhofer IWS uses, for example, a copper foil roughened by means of pulsed laser ablation, to which silicon is applied.
- adhesion of layers can be improved by chemical adhesion.
- a stable connection is created here by a reaction of the layer with the substrate or by an additional adhesion promoter.
- adhesion to the current collector is crucial for a long service life of the battery. This ensures a constant current contact despite the volume expansion of the silicon with lithium storage of up to 400%.
- the enormous stress at the boundary layer due to the lithium incorporation as well as the internal stress of the rigid silicon during application usually leads to a rapid loss of electrical contact between the active material (Si) and collector (Cu) and thus to a reduction in the battery's capacity.
- the object is achieved by a method according to the invention according to a first variant of independent claim 1 .
- a silicon layer is deposited on a substrate, preferably made of copper, and which is then subjected to short-term annealing, the substrate before the silicon layer is deposited on the Substrate, also subjected to a short-term tempering, whereby the surface of the substrate is roughened.
- Short-term tempering is understood to mean, in particular, flash lamp tempering and/or laser tempering.
- the flash lamp annealing takes place with a pulse duration or Annealing time in the range from 0.3 to 20 ms and a pulse energy in the range from 0.3 to 100 J/cm 2 .
- the annealing time is adjusted from 0.01 to 100 ms by the scanning speed of the local heating point in order to generate an energy density of 0.1 to 100 J/cm 2 .
- the heating ramps achieved in the short-term tempering are in the range of 10 A 4-10 A 7 K/s required for the process.
- Flash lamp annealing uses a spectrum in the visible wavelength range
- laser annealing uses discrete wavelengths in the infrared (IR) to ultraviolet (UV) spectrum.
- IR infrared
- UV ultraviolet
- a high energy high absorption of the energy of the flash lamp or . of the laser ensures that the surface melts.
- the surface atoms are rearranged into a rough structure. The faster the substrate surface is cooled, the finer-grained or f the substrate surface becomes more one-piece and is therefore rougher than without this process step.
- Roughening the substrate surface solely by means of short-term tempering is a very simple process that does not require any additional material. It is therefore easily possible to carry out this process step of short-term tempering under vacuum, so that no vacuum interruption is necessary for a subsequent deposition process to be carried out in a vacuum system and oxidation of the material surface is thus prevented. In some cases, however, a high level of short-term tempering energy is required for melting.
- a functional layer is formed before the silicon layer is deposited on the substrate Layer deposited, which is then subjected to a short-term tempering, so that the surface of the functional layer is roughened.
- the functional layer reacts with the substrate, creating a high adhesion is produced and at the same time the surface of the functional layer is roughened.
- the silicon layer is then deposited on the new surface, which is then also subjected to short-term annealing for controlled diffusion and formation of copper silicide.
- a functional layer is understood to mean a layer that fulfills, has or influences a predetermined property or effect. This can e.g. the adhesive strength, conductivity or absorption.
- the application of an additional functional layer to the substrate serves to pre-functionalize the surface. This layer can be applied, for example, by sputtering or vaporization. The layer acts as an absorber, thereby reducing the absorption of the flash or
- Carbon for example, is easy to apply as an absorption layer and is correspondingly inexpensive.
- the process of depositing a functional layer on the substrate and the subsequent short-term annealing can be repeated several times.
- the aim is to create a reaction layer that is rougher than the original surface and that reduces the diffusion of the copper into subsequent layers.
- more than one functional layer is deposited on the substrate, forming a layer stack which is then subjected to short-term annealing.
- a layer or multiple stack is easy to implement in the process flow.
- the Brief tempering to roughen the surface is followed by the deposition of the active material of the lithium battery, which has better adhesion to the existing structure.
- a reaction with the pretreated substrate can take place in addition to the physical adhesion, for example a reaction of Si with the formation of a silicide.
- Silicides crystallize in a disordered structure with the formation of a rough surface. This can serve as a well adhering surface for further electrode construction.
- a stack of layers consists of several functional layers, the application of which makes sense when several properties have a positive effect on roughening the surface, but these cannot be fulfilled by one material.
- Carbon has good absorption properties, allowing the temperature of the surface to be raised by short-term annealing, but it does not react with copper. This is different with a metal like nickel, which has good reflective properties but reacts well with copper. Both materials, i.e. carbon and nickel, can together create a high surface roughness in a layer stack.
- a further advantage of a layer stack is a homogenization of the material distribution and the reduction of stress in the layers of the layer stack and the substrate.
- a layer designates a layer of the stack of layers, which is made up of at least two layers.
- a silicon layer and/or another functional layer is deposited as the functional layer and is subjected to a short-term annealing, whereby the deposited functional layer is roughened.
- a first deposited layer is treated with a high energy input in order to bring about a complete and complete reaction of the layer atoms to produce a rough layer/layer of the layer stack.
- Short-term annealing can then take place with less energy than in the first layer deposition in order to stabilize a layer stack made up of several functional layers/layers, but to prevent the reaction as in the first layer/layer.
- the functional layer and/or the layer stack is made from at least one of the materials titanium (Ti), nickel (Ni), aluminum (Al), tin (Sn), gold (Au), silver (Ag), Copper (Cu), Silicon (Si), Molybdenum (Mo), Carbon (C) and/or Tungsten (W) are formed and deposited.
- the materials for the functional layer or the functional layers of the layer stack are selected according to the desired properties of the final structure of the lithium battery.
- an absorption layer is deposited as the functional layer.
- a functional layer serves to pre-functionalize the surface.
- This layer can be applied, for example, by sputtering or evaporation.
- An absorption layer significantly increases the absorption of the flash or laser and the flash or laser energy can be reduced.
- Carbon, for example, is easy to apply as an absorption layer and is correspondingly inexpensive.
- both the adhesion due to the pure physical roughness and the chemisorption are used for good adhesion.
- a heterogeneous process occurs after the silicon layer has been deposited on the substrate Layer stack deposited, which is selectively etched.
- the selective etching of the surface results in a roughening of the surface.
- the roughness can be adjusted by the etching parameters used.
- the following etching parameters are advantageous for the aforementioned purpose: CuCla, CU2SO4, H2SO4, HF in total concentrations below 5% for slow copper/silicon/silicide etching.
- the aim is always to obtain a roughness that is both better/higher than that of the pure substrate and also better/higher than that of the deposited layer that has reacted through the short-term annealing, whereby the copper substrate with a thickness of less than 20 pm must not be destroyed .
- a heterogeneous layer stack is understood to mean a layer of reacted and non-reacted parts, for example pure silicon can be surrounded by a conductive copper silicide matrix.
- the advantages of the method according to the invention or Process variants are that the roughening can be integrated into an existing deposition process for the anode production and the short-time tempering is possible inline without special pre-treatment.
- the use of materials that are also used in the anode construction enables simple surface structuring with flash lamp annealing.
- the subsequent reaction between the applied silicon layer and the copper substrate results in very good adhesion and also a very good electrical transition, with no additional material being required in addition to the silicon.
- the copper comes from a Cu foil substrate.
- the application of the functional layer as an additional process step extends the manufacturing process of silicon anodes for lithium batteries and does not contribute to increasing the capacity of the anode, since copper silicide is not or only slightly capable of storing lithium, or. intercalation is an irreversible process , however , the advantage of good adhesion between the current collector and the active material of the anode prevails , good adhesion ensuring a homogeneous and stable electrical transition for battery operation .
- the adhesive strength of functional layers in lithium batteries in which a silicon layer is deposited on a substrate, preferably made of copper, and which is then subjected to short-term annealing, can also be increased by dividing the silicon layer from silicon particles, silicon nanoparticles and / or Silicon nanowires is formed, a functional layer then being deposited on it and one Is subjected to short time tempering.
- Silicon before entering a coating facility can significantly reduce the cost of the process.
- Silicon can be purchased commercially as particles, nanoparticles, nanowire.
- the silicon reacts with the copper and forms a very rough surface that can then be used to build up the anode. Adhesion and electrical conductivity are very good due to the reaction of Si and Cu.
- various pre-treatments e .g . B. copper surface etching , nanowire growth and reaction of Si with Cu by furnace processes can be avoided . Such a process can take place without a vacuum.
- the deposition processes in the process plant can be simplified, since only subsequent depositions on a substrate that has already been activated with silicon are necessary in the manufacturing process.
- the substrate can be prefabricated with any particle size between 1 nm and 5 ⁇ m in diameter. However, care must be taken to ensure that the particles are homogeneously distributed and adhere to the copper substrate.
- Fig. 1 Exemplary structure and function of a lithium-ion cell during the discharging process; 2 SEM images of a mechanically roughened Si surface (b) as a variant of an ordered structure by embossed structures in a copper substrate (a), which are transferred to the deposited silicon to increase the adhesive strength;
- FIG. 4 shows a schematic representation of the method according to the invention according to a first variant according to claim 1;
- FIG. 5 shows a schematic representation of the method according to the invention according to a second variant according to claim 1;
- Figure 4 shows the inventive method according to a first variant according to claim 1.
- the substrate 10, z. B. a copper foil, which serves as a current collector, is subjected to a short-term tempering, in particular flash lamp tempering 11 .
- the flash lamp annealing 11 leads to the melting of the copper foil 10.
- the substrate material 10 solidifies again and leads to a roughening 12, 120 of the substrate surface. A high energy input is required for this process variant.
- Figure 5 shows the method according to the invention according to a second variant according to claim 1.
- a first functional layer 13, z. B. applied from carbon and subjected to a short-term annealing, in particular flash lamp annealing 11 .
- the carbon layer 13 increases the absorption significantly and at the same time leads to a roughening 12, 121 of the surface.
- the use of carbon has the advantage that carbon in the form of graphite is already being used in the manufacture of lithium-ion batteries and can therefore be integrated easily and tolerably into the manufacturing process.
- a further advantage is that the sputtered carbon layer 121 can be used as a copper diffusion brake and thus reduces silicide formation, since copper atoms from the substrate are prevented from getting into the subsequently applied silicon and reacting with the silicon layer.
- Carbon also has the advantage that it is very light and electrically conductive, and lithium can diffuse well. The weight, the good electrical and ionic conductivity are an advantage over all other metals used in the intermediate layer.
- the silicon deposition is not shown in FIGS. 4 and 5.
- FIGS. 6a and 6b each show a photograph of a surface of a functional layer roughened using the method according to the invention, in the present example an aluminum layer introduced into a silicon layer after short-term annealing, in particular flash lamp annealing, which promotes columnar growth of silicon/silicides 21.
- the layer structure consists of Si/Al/Si, which was flashed with high flash energy.
- a layered structure is no longer recognizable, but the recognizable columnar structures form. These arise from the fact that the aluminum forms a mixed crystal/amorphous solid with the silicon, which forms these structures below the melting temperature of silicon.
- the roughening results in island growth of the deposited silicon 21.
- FIG. 6b Column-like silicon structures are formed and, as a result of the reaction with metal atoms, silicide structures are also formed (FIG. 6b).
- the two SEM images in FIG. 6a and FIG. 6b each show the same structural section of the sample, with these images differing in the detector selected.
- List of reference symbols Lithium-ion battery Collector on the anode side SEI -Sol id-Electrolyte- Interphase Elektrolyte Separator Conductive interphase Cathode, positive electrode Collector on the cathode side Anode, negative electrode Substrate, e.g. B.
- Copper foil Short-term annealing in particular flash lamp annealing and/or laser annealing
- Roughened surface after short-term annealing Roughened copper surface
- Roughened carbon surface Roughened nickel surface
- Nickel layer Embossed structures in a copper substrate Structured silicon layer produced by embossing Column Si structures
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Abstract
Description
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280054926.1A CN117795698A (zh) | 2021-08-09 | 2022-08-09 | 用于提高锂电池中活性层的粘合强度的方法 |
| KR1020247007597A KR20240046743A (ko) | 2021-08-09 | 2022-08-09 | 리튬 배터리에서 활성층의 접착 강도를 증가시키는 방법 |
| EP22765028.0A EP4385079A1 (de) | 2021-08-09 | 2022-08-09 | Verfahren zur erhöhung der haftfestigkeit von aktivschichten in lithium-batterien |
| JP2024500644A JP2024529865A (ja) | 2021-08-09 | 2022-08-09 | リチウム電池の活性層の接着強度を高めるための方法 |
| US18/682,000 US20240347697A1 (en) | 2021-08-09 | 2022-08-09 | Method for increasing the adhesive strength of active layers in lithium batteries |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021120624.3 | 2021-08-09 | ||
| DE102021120624 | 2021-08-09 |
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| WO2023017009A1 true WO2023017009A1 (de) | 2023-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/EP2022/072294 Ceased WO2023017009A1 (de) | 2021-08-09 | 2022-08-09 | Verfahren zur erhöhung der haftfestigkeit von aktivschichten in lithium-batterien |
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| Country | Link |
|---|---|
| US (1) | US20240347697A1 (de) |
| EP (1) | EP4385079A1 (de) |
| JP (1) | JP2024529865A (de) |
| KR (1) | KR20240046743A (de) |
| CN (1) | CN117795698A (de) |
| WO (1) | WO2023017009A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023118095A1 (de) * | 2021-12-23 | 2023-06-29 | Norcsi Gmbh | Silizium-anode für lithium-ionen-batterien und verfahren zu deren herstellung |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014119421A1 (ja) * | 2013-01-29 | 2014-08-07 | 株式会社日立製作所 | ナノピラー及びその形成方法並びに当該ナノピラーを用いた接合材料、電池、炭酸ガス回収・貯留装置及び電力変換機器用モジュール |
| DE102016001949A1 (de) * | 2016-02-15 | 2017-08-17 | Helmholtz-Zentrum Dresden-Rossendorf E. V. | Verfahren zur Herstellung von auf Silizium basierenden Anoden für Sekundärbatterien |
| US20210057755A1 (en) * | 2019-08-21 | 2021-02-25 | Graphenix Development, Inc. | Anodes for lithium-based energy storage devices |
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2022
- 2022-08-09 CN CN202280054926.1A patent/CN117795698A/zh active Pending
- 2022-08-09 US US18/682,000 patent/US20240347697A1/en active Pending
- 2022-08-09 EP EP22765028.0A patent/EP4385079A1/de active Pending
- 2022-08-09 WO PCT/EP2022/072294 patent/WO2023017009A1/de not_active Ceased
- 2022-08-09 JP JP2024500644A patent/JP2024529865A/ja active Pending
- 2022-08-09 KR KR1020247007597A patent/KR20240046743A/ko active Pending
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Also Published As
| Publication number | Publication date |
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| JP2024529865A (ja) | 2024-08-14 |
| EP4385079A1 (de) | 2024-06-19 |
| US20240347697A1 (en) | 2024-10-17 |
| CN117795698A (zh) | 2024-03-29 |
| KR20240046743A (ko) | 2024-04-09 |
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