The Global Lithium Battery Separator Material Market was valued at USD 4.2 Billion in 2023 and is projected to reach USD 12.8 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 15.7% during the forecast period (2023–2030). This rapid expansion is driven by surging demand from electric vehicles, grid-scale energy storage systems, and the proliferation of portable electronics.

As the world accelerates its transition to electrification, separator materials have become crucial components ensuring battery safety and performance. This analysis examines the Top 10 Companies in the Lithium Battery Separator Material Market—technology leaders developing innovative membrane solutions that enable next-generation energy storage.

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🔟 1. Asahi Kasei Corporation

Headquarters: Tokyo, Japan
Key Offering: Hipore™ wet-process separators

Asahi Kasei commands the global separator market with approximately 30% share through its advanced microporous polyolefin membranes. The company supplies major battery manufacturers worldwide and is expanding production to satisfy EV industry requirements.

Technology Advantages:

• Industry-leading pore uniformity and mechanical strength
• High thermal shutdown functionality (>150°C)
• Strategic partnerships with leading Asian battery producers

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9️⃣ 2. SK Innovation

Headquarters: Seoul, South Korea
Key Offering: High-performance EV battery separators

SK Innovation has emerged as a dominant force through subsidiary SK IE Technology, operating production facilities across three continents with 1.5 billion m² annual capacity. The company supplies major automotive OEMs with advanced coated separators.

Innovation Focus:

• Ceramic-coated separators for thermal stability
• High-strength membranes enabling fast charging
• Vertical integration with SK On battery production

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8️⃣ 3. Toray Industries, Inc.

Headquarters: Tokyo, Japan
Key Offering: Setela™ battery separators

Toray combines polymer expertise with precision engineering to produce ultra-thin separators (5-9μm) for high-energy density batteries. The company is expanding European and North American operations to serve growing EV battery manufacturing.

Technical Capabilities:

• Advanced ceramic and polymer coating technologies
• Custom solutions for specific battery chemistries
• High-porosity membranes for enhanced ion conductivity

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7️⃣ 4. Celgard, LLC

Headquarters: Charlotte, North Carolina, USA
Key Offering: Dry-process microporous membranes

A pioneer in separator technology, Celgard maintains leadership positions in both consumer electronics and automotive applications. The company’s dry-process approach offers distinct advantages for certain lithium battery configurations.

Market Strengths:

• Portfolio of 1,100+ separator-related patents
• Strong relationships with North American battery makers
• Developing next-generation high-performance membranes

Download FREE Sample Report:
Global Lithium Battery Separator Material Market – View in Detailed Research Report

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6️⃣ 5. UBE Corporation

Headquarters: Tokyo, Japan
Key Offering: U-Pore wet-process separators

UBE has established itself as a key supplier to Japan’s battery industry with high-quality polyolefin separators. The company is expanding Southeast Asian production to meet growing regional EV battery demand.

Technical Advantages:

• Superior electrolyte absorption and retention
• Proprietary shutdown functionality
• Tailored solutions spanning multiple battery types

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5️⃣ 6. Sumitomo Chemical Co., Ltd.

Headquarters: Tokyo, Japan
Key Offering: High-porosity polyolefin separators

Sumitomo Chemical leverages extensive chemical expertise to manufacture premium separator materials. The company has formed strategic alliances with battery producers globally to develop optimized membrane solutions.

Innovation Focus:

• Advanced surface modification technologies
• Ultra-lightweight separator development
• Eco-friendly production processes

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4️⃣ 7. Entek International

Headquarters: Lebanon, Oregon, USA
Key Offering: Wet-process lithium battery separators

Entek is making significant investments in North American production capacity, including a $1.5 billion expansion to support domestic EV battery manufacturing.

Market Position:

• Leading supplier to US-based battery makers
• Developing “Made in America” separator solutions
• Innovating sustainable separator materials technologies

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3️⃣ 8. Evonik Industries

Headquarters: Essen, Germany
Key Offering: Separion® ceramic-coated separators

Evonik applies advanced materials science to develop high-performance separator solutions. The company’s ceramic-coated products are particularly valued for demanding battery applications.

Technology Leadership:

• Innovator in ceramic-coated separator technology
• Specialization in high-temperature applications
• Customized solutions for next-gen battery development

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2️⃣ 9. Mitsubishi Paper Mills (MPM)

Headquarters: Tokyo, Japan
Key Offering: LiBC™ cellulose-based separators

MPM offers unique cellulose-based battery separators that provide alternatives to traditional polyolefin membranes for specialized applications.

Differentiating Factors:

• Excellent electrolyte wettability properties
• Superior thermal stability versus polymer films
• Environmentally-friendly material attributes

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1️⃣ 10. W-Scope Corporation

Headquarters: Tokyo, Japan
Key Offering: High-performance separator films

W-Scope has rapidly expanded into a major global supplier through significant capacity investments and continuous technological advancement.

Growth Strategy:

• Large-scale European production facility investments
• Development of ultra-thin, high-strength films
• Strategic partnerships with battery manufacturers

Read Full Report:
Global Lithium Battery Separator Material Market – View in Detailed Research Report

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⚡ Outlook: The Future of Battery Separator Technology

The lithium battery separator market is undergoing transformative evolution, shaped by several critical industry trends:

🔋 Key Market Developments:

• Adoption of thinner, higher-porosity films for increased energy density
• Growth of hybrid ceramic-polymer coating technologies
• Localized production near battery gigafactories
• Development of specialized materials for solid-state batteries
• Increasing focus on sustainable and recyclable separator solutions

Read Full Report:
Global Lithium Battery Separator Material Market – View in Detailed Research Report

The companies profiled above are driving innovation in next-generation separator technologies that will enable safer, more efficient energy storage systems powering our electrified future.