Wet process lithium battery separator patent

US Lithium-Ion Battery Separator Pioneer

ENTEK enjoys more than two decades of experience as the only US-owned and US based producer of ''wet-process'' separator for lithium batteries and continues to

CN109980156A

The present invention discloses a kind of wet process lithium ion battery separator degreasing unit, it is characterized in that, including oil removing tank shell, outlet air orifice...

At the Center of Membrane Innovation

HIPORE™ wet-process separator coating and finishing lines 2020''s Since 2015, Celgard has operated as a subsidiary of the Asahi Kasei Group, a diversified group of companies that Lithium Battery" patents. PROPRIETARY CELGARD ADHESIVE COATINGS. 6 Separator Innovations for Next-Generation Battery Cells

Recent Progress of High Safety Separator for Lithium-Ion Battery

With the rapid increase in quantity and expanded application range of lithium-ion batteries, their safety problems are becoming much more prominent, and it is urgent to take corresponding safety measures to improve battery safety. Generally, the improved safety of lithium-ion battery materials will reduce the risk of thermal runaway explosion. The separator is

Device and process for recovering waste solvent generated in wet

The invention relates to a process for recovering a waste solvent generated in wet-process production of battery separators. Waste dichloromethane, wastewater and waste paraffin oil generated in extraction stage of the production process are subjected to processes including high-temperature negative-pressure distillation, a gas-phase condensation and oil-liquid separation

Tuneable and efficient manufacturing of Li-ion battery separators

Novel separators have also shown the possibility to enhance the performance of next generation batteries. 11 For instance, by increasing cycle life of Li-metal batteries by suppressing lithium dendrite growth. 12,13 A limitation with these studies is the use of traditional liquid electrolytes that ultimately degrade over time and where safety is still of concern. However, separators can

SEPARATOR PRODUCT PORTFOLIO

ENTEK''s patented nanoparticle technology (US Patent # 9,847,519) • 5-layer separator with outer adhesive functional layers and alumina-coated polyolefin base separator for laminated cells often used in xEV batteries This brochure is only intended to show typical properties of ENTEK lithium separators. We encourage purchasers to conduct tests to

Making a lithium ion battery separator

In an electrochemical battery cell of a lithium ion battery, the separator is situated between confronting inner face surfaces of a positive electrode and a negative electrode and is soaked...

METHOD FOR PREPARING LITHIUM-ION BATTERY SEPARATOR

The lithium-ion battery separator manufactured by the present invention is used for a lithium-ion battery, and can effectively decrease the short circuit generated during the

Single-layer lithium ion battery separator

EP2710652A1 EP12789264.4A EP12789264A EP2710652A1 EP 2710652 A1 EP2710652 A1 EP 2710652A1 EP 12789264 A EP12789264 A EP 12789264A EP 2710652 A1 EP2710652 A1 EP 2710652A1 Authority

Lithium ion battery separator: Top 10

Established in 2010, Gellec is an enterprise integrating R&D, production, and sales of lithium battery wet-process separators. Gellec has applied for 230 patents for

EV Li-ion Battery Separator technology – E

Fig 2 – SEM of ENTEK Membranes ''Wet-process'' Lithium-ion battery separator micro-structure. (US Patent #9,847,519) the process enables the production of

SEPARATORS, BATTERIES, SYSTEMS, VEHICLES, AND RELATED

The inventive dry process microporous battery separator membrane preferably has equal or better separator charge performance and/or discharge performance and/or

Battery Separator Film Development: Impact of Coating

Battery Separator Film Development: Impact of Coating Keywords: DSC, TMA, TGA, DMA, thermal analysis, battery, battery separator, lithium-ion battery, polyolefins ABSTRACT Battery separators are critical to the performance and safety of lithium-ion batteries, allowing ion exchange while acting as a physical barrier between electrodes.

Lithium

ENTEK utilizes a unique, wet process manufacturing approach to produce its ultrahigh molecular weight polyethylene (UHMWPE) base separators with excellent mechanical properties. With over 35 years'' experience in battery separator production, ENTEK boasts a talent pool of more than 700 employees with a strategically positioned global footprint in the USA, UK and Asia-Pacific.

Thermal Analysis of Battery Separator Film

Introduction. Lithium ion batteries (LIB) are rapidly becoming the most common source of stored energy for everything from personal electronic devices to electric vehicles and long-term

The Development of High-Power LIBs Separators

Nowadays, a lithium-ion battery is the first way to develop an energy storage battery. The lithium-ion battery has the characteristics of high energy density, small unit volume, large voltage, long cycle life, and modular integration. Usually, a lithium-ion battery includes positive& negative electrodes, a battery separator, and an electrolyte.

PE single-layer wet-process lithium-ion battery

PE single-layer wet-process lithium-ion battery separator. Primary Applications . PE separator for lithium ion batteries. Technical Data (Typical Properties) Basic Film Properties. Unit of Measure. Typical Value. Thickness. μm. 9/12. Air P

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tor in lithium-ion batteries. The wet-process separator HiporeTM is used in automotive lithium-ion batteries, but also for consumer electronics, such as smartphones or portable music players. Its high porosity enables an outstanding liquid holding capacity, while its high puncture strength contributes to an enhanced safety and reliability.

LITHIUM ION BATTERY SEPARATORS AND ELECTRODES

The poisoning of the lithium ion battery by transition metals dissolving from the positive electrode may be reduced or prevented by incorporating an example of the separator and/or positive

METHOD FOR DISASSEMBLING AND SEPARATING WASTE

A method for disassembling and separating a waste lithium-ion battery comprises: directly tearing a battery pack or a cell of the waste lithium-ion battery with water

Lithium-ion Battery Wet-Process Separator Market

The global Lithium-ion Battery Wet-Process Separator market size was valued at approximately USD 2.8 billion in 2023 and is projected to reach USD 6.1 billion by 2032, growing at a compound annual growth rate (CAGR) of 9.2%.

Establishment of joint venture in China for dry-process LIB separator

Asahi Kasei''s wholly owned subsidiary Polypore International, LP (Polypore) and Shanghai Energy New Materials Technology Co., Ltd. (SEMCORP) reached agreement in January 2021 to establish a joint venture in China for dry-process separator* for lithium-ion batteries (LIBs). With the receipt of the necessary regulatory approvals, the joint venture has

20240003019 METHOD AND SYSTEM FOR RECYCLING LITHIUM

A method of recycling lithium-ion batteries includes steps of: roasting black mass from lithium-ion batteries to produce a reduced black mass, conducting simultaneous aqueous leaching and

Rechargeable Batteries, Separators for | SpringerLink

According to the patent, the separator has microporous regions of PE and PP. On heating in an oven, the impedance of the separator increases near the melting point of PE and the impedance remains high until beyond the melting point of PP. Scanning electron micrographs of separators made by wet process and used in lithium-ion batteries (a

Recent progress of advanced separators for Li-ion batteries

Lithium-ion batteries (LIBs) have gained significant importance in recent years, serving as a promising power source for leading the electric vehicle (EV) revolution [1, 2].The research topics of prominent groups worldwide in the field of materials science focus on the development of new materials for Li-ion batteries [3,4,5].LIBs are considered as the most

All You Need to Know About Battery Separator

The manufacturing process of battery separators can be broadly categorized into two methods: wet and dry. Wet Process Manufacturing. The wet process is widely used for manufacturing battery separators, especially

Special report on lithium battery

Battery separator is one of lithium batteries materials. Battery separator, cathode material, anode material and electrolyte are the most important lithium-ion battery materials, accounting

Making a lithium ion battery separator

A porous polymer separator for use in a lithium ion battery is formed by a temperature-induced phase separation method. The porous polymer separator includes a polymer matrix having opposed major faces and a network of pore openings that extends between the major faces and permits intrusion of a lithium-ion conducting electrolyte solution.

Wet-laid non-woven fabric for separator of lithium-ion battery

The property of separator is one of the main factors affecting the charge and discharge process and safety of lithium-ion batteries. The microporous polyolefin membranes (PP, PE and laminates of PP and PE) are the most widely used Li-ion battery separators, which attributes to their thin thickness, small pore size (0.03–0.1 μm) and good electrochemical

WET SEPARATION PROCESS FOR WASTE LITHIUM BATTERIES AND

The present invention provides a wet sorting process, which aims to effectively separate graphite, cathode material powder, copper, aluminum and steel shell from a calcined

Wet and dry production processes for

Fig. 2 presents schematically the wet and dry processes used to make separators [65]. The charge process is limited to an upper cell voltage of 1.6 V or at the 100 % capacity of I -/I 3

Wet process lithium battery separator patent [PDF]

6 FAQs about [Wet process lithium battery separator patent]

Are lithium ion battery separators wet?

Information is provided on the typical properties of lithium–ion battery separators that are produced using wet process technology. Advances and developments using the wet process approach are explicitly highlighted. A key effort in this regard is the desire to produce progressively thinner separators.

What is polymer-based separators for lithium-ion batteries?

Polymer-Based Separators for Lithium-Ion Batteries: Production, Processing, and Properties takes a detailed, systematic approach to the development of polymer separators for lithium-ion batteries, supporting the reader in selecting materials and processes for high-performance polymer separators with enhanced properties.

Can a porous battery separator be used in a lithium ion rechargeable battery?

A novel porous battery separator has been developed for use in a lithium ion rechargeable battery.

What are new process technologies for the production of battery separators?

The details of new process technologies for the production of battery separators are provided. These novel approaches are being largely pursued for applications such as electric vehicles. Three basic approaches are discussed. The first approach involves the use of nonwoven materials to produce battery separators.

What is a suitable dry process separator?

The possibly preferred inventive dry process separator may be biaxially stretched and may have a thickness range between 10 μm and 25 μm having improved strength, high porosity, and unexpectedly and/or surprisingly high charge capacity, such as, for example, high 10 C rate charge capacity.

What is a wet process?

The wet process, also known as phase inversion, involves the mixing of the polymer resins with a processing oil or a plasticizer, and/or other additives, and the mixture is then extruded and the processing oil or plasticizer is removed. During the wet process the pores are formed when the processing oil is removed.

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