The Market Reports

Synopsis
The global market for Wet Separators for Lithium-ion Batteries was estimated to be worth US$ 3723 million in 2024 and is forecast to a readjusted size of US$ 6079 million by 2031 with a CAGR of 7.0% during the forecast period 2025-2031.
This report provides a comprehensive assessment of recent tariff adjustments and international strategic countermeasures on Wet Separators for Lithium-ion Batteries cross-border industrial footprints, capital allocation patterns, regional economic interdependencies, and supply chain reconfigurations.
Separator usually refers to a porous membrane material located between the positive and negative electrodes of a battery. Its main function is to prevent the positive and negative electrodes from directly contacting each other and causing a short circuit, while allowing electrolyte ions to pass through to maintain the battery's charge and discharge process. The wet process is also known as the thermally induced phase separation method. The wet process adopts the principle of thermally induced phase separation. The plasticizer is mixed with the polyolefin resin. Solid-liquid phase/liquid-liquid phase separation occurs during the cooling of the molten mixture. The membrane is pressed and heated to a temperature close to the melting point. It is then stretched to align the molecular chains. The film is kept warm and a volatile solvent is used to extract the plasticizer from the film to produce a diaphragm.
As a core component of lithium-ion batteries, wet-process diaphragms are mainly driven by the following market factors:
Technology iteration drives performance breakthroughs
Wet-process diaphragms use thermally induced phase separation technology to achieve precise control of microporous structure (higher porosity and more uniform pore size distribution), significantly improving battery energy density (suitable for high-end scenarios such as ternary lithium batteries) and cycle life. Compared with dry-process diaphragms, wet-process products have better electrolyte wettability and thermal stability (thermal shutdown temperature reaches 180°C), effectively responding to the safety challenges of high-energy density batteries, and technological generational advantages directly promote penetration in the mid-to-high-end market.
Policies and industrial chain synergy strengthen
Global new energy policies (such as China's dual credits and EU carbon neutrality) force battery performance upgrades, and wet-process diaphragms as key materials benefit from subsidy guidance (such as priority support for high-energy density batteries). At the same time, the localization of upstream materials (such as breakthroughs in polyethylene and ceramic coating technology) reduces costs, and the evolution of downstream solid-state battery technology generates demand for new diaphragms. The industrial chain synergizes to accelerate the iteration of wet-process diaphragm technology.
Demand upgrade opens up incremental space
High-end electric vehicles: the penetration rate of ternary lithium batteries has increased, wet-process diaphragms are adapted to the needs of high-nickel systems, and the value of each vehicle has increased accordingly.
Diversification of energy storage scenarios: household energy storage and grid-level energy storage have upgraded requirements for cycle life and safety, and wet-process diaphragms have gradually replaced dry-process products with their performance advantages.
Iteration of consumer electronics: 5G devices and wearable devices have a demand for thinner and lighter batteries, which drives wet-process diaphragms to develop in a thinner direction.
The generational gap in technology builds a moat, the resonance of policies and the industrial chain provides thrust, and the demand upgrade opens the ceiling. The three jointly drive the wet-process diaphragm market from high-end consumer batteries to the full range of power batteries.
This report aims to provide a comprehensive presentation of the global market for Wet Separators for Lithium-ion Batteries, focusing on the total sales volume, sales revenue, price, key companies market share and ranking, together with an analysis of Wet Separators for Lithium-ion Batteries by region & country, by Type, and by Application.
The Wet Separators for Lithium-ion Batteries market size, estimations, and forecasts are provided in terms of sales volume (K Sqm) and sales revenue ($ millions), considering 2024 as the base year, with history and forecast data for the period from 2020 to 2031. With both quantitative and qualitative analysis, to help readers develop business/growth strategies, assess the market competitive situation, analyze their position in the current marketplace, and make informed business decisions regarding Wet Separators for Lithium-ion Batteries.
Market Segmentation
By Company
Semcorp
Putailai
Senior
Gellec
TORAY
Asahi Kasei
Sinoma Science & Technology
SK IE Technology
Cangzhou Mingzhu
ENTEK
Segment by Type
Coated Separator
Uncoated Separator
Segment by Application
Power Battery
Consumer Battery
Energy Storage Battery
By Region
North America
United States
Canada
Asia-Pacific
China
Japan
South Korea
Southeast Asia
India
Australia
Rest of Asia-Pacific
Europe
Germany
France
U.K.
Italy
Netherlands
Nordic Countries
Rest of Europe
Latin America
Mexico
Brazil
Rest of Latin America
Middle East & Africa
Turkey
Saudi Arabia
UAE
Rest of MEA
Chapter Outline
Chapter 1: Introduces the report scope of the report, global total market size (value, volume and price). This chapter also provides the market dynamics, latest developments of the market, the driving factors and restrictive factors of the market, the challenges and risks faced by manufacturers in the industry, and the analysis of relevant policies in the industry.
Chapter 2: Detailed analysis of Wet Separators for Lithium-ion Batteries manufacturers competitive landscape, price, sales and revenue market share, latest development plan, merger, and acquisition information, etc.
Chapter 3: Provides the analysis of various market segments by Type, covering the market size and development potential of each market segment, to help readers find the blue ocean market in different market segments.
Chapter 4: Provides the analysis of various market segments by Application, covering the market size and development potential of each market segment, to help readers find the blue ocean market in different downstream markets.
Chapter 5: Sales, revenue of Wet Separators for Lithium-ion Batteries in regional level. It provides a quantitative analysis of the market size and development potential of each region and introduces the market development, future development prospects, market space, and market size of each country in the world.
Chapter 6: Sales, revenue of Wet Separators for Lithium-ion Batteries in country level. It provides sigmate data by Type, and by Application for each country/region.
Chapter 7: Provides profiles of key players, introducing the basic situation of the main companies in the market in detail, including product sales, revenue, price, gross margin, product introduction, recent development, etc.
Chapter 8: Analysis of industrial chain, including the upstream and downstream of the industry.
Chapter 9: Conclusion.

Index