Its role Owner
Microporous, LLC is a global leader in the manufacturing of advanced battery separators for lead-acid and lithium-ion batteries. The company develops, produces, and markets high-performance separators used in automotive, industrial, motive power, and energy storage applications.
Headquartered in Piney Flats, Tennessee, Microporous operates manufacturing facilities in Piney Flats, TN, and Feistritz, Austria. It is currently constructing a major new lithium-ion battery separator plant in Danville, Virginia, expected to support significant domestic production capacity upon completion around 2027.
With roots dating back to 1934, the company has over 90 years of experience in battery separator technology. It pioneered various innovations including rubber, polyethylene, and hybrid separators, and is now expanding into coated wet-process PE separators for lithium-ion batteries to support the North American EV and energy storage markets.
Microporous is a portfolio company of Trent Capital Partners, which acquired full ownership in 2024. The firm positions itself as a key player in re-shoring critical battery component manufacturing in the United States, benefiting from federal grants and incentives under programs like the Bipartisan Infrastructure Law.
In the industry, Microporous is recognized as one of the leading suppliers of battery separators, serving major battery manufacturers and contributing to supply chain resilience for electric vehicles and renewable energy storage.
Also known as Microporous LLC, MP Assets Corporation, Amerace Microporous Products, and American Rubber Company.
chemXplore tracks 1 project involving Microporous, of which one is active.
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