Celgard LLC
Celgard is a global leader in the development and production of high-performance membrane separator technology. Our products are used in a broad range of energy storage applications including rechargeable lithium-ion batteries, disposable lithium batteries and specialty energy storage. With more than 40 years of market-leading research, development, and manufacturing, Celgard delivers highly-engineered products with proven quality and performance.
Company details
Find locations served, office locations and our distributors
- Business Type:
- Manufacturer
- Industry Type:
- Environmental - Environmental Management
- Market Focus:
- Globally (various continents)
This company also provides solutions for other industrial applications.
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History
With more than 40 years of experience in the development, manufacturing, and distribution of high-performance membrane separators, Celgard, LLC is a recognized leader among lithium battery material suppliers, delivering outstanding product performance, reliable supply, technical solutions, and global business support.
Celgard products were initially developed in the mid-1960s at the Celanese Research Labs in Summit, New Jersey, USA. By the mid-1970s, our membranes enjoyed commercial success as a key component in blood oxygenation devices commonly used in open heart surgery. As a subsidiary of Asahi Kasei since 2015, Celgard has been developing and producing separators for primary (single-use) lithium batteries since the early 1980s, and for secondary (rechargeable) lithium batteries since the early 1990s.
Battery Innovation
High Power / High Energy
Whether your battery designs require long battery life, high discharge rates, or something in between, it’s critical to have the correct combination of components to address these issues. Celgard’s family of separator solutions utilizes an array of chemistry and coating options to deliver excellent long-term cycle performance and safety.
Chemistry
Today’s battery requirements are constantly changing, with chemistries ranging from lower voltage LFP to higher voltage LCO, NMC and NCA. Your battery not only requires a separator with excellent electrical performance and dimensional integrity, but it also requires a material selection that is compatible with your electrochemical cell components. Celgard’s experts will work with you to develop the ideal combination for optimal performance in your product.
Energy Density
As demand for thinner batteries and higher capacities increase, higher energy density is needed to support those trends. Whether your application requires voltages between 4.25 to 4.35 or more, Celgard is committed to providing the right technology to meet your needs.
Coatings
You may require a coated separator for low shrinkage, low moisture content, better adhesion, increased life cycle, or increased safety. Celgard offers several coating options from 2 to 5 μm thickness, including ceramic, which provides enhanced short prevention and excellent structural integrity at high temperatures.
Form Factor
Size criteria and cost considerations of cells are what drive you to decide the ultimate form factors of your battery. From lightweight prismatic pouch cells, cost-effective high density cylindrical cells, or button cells for smaller applications, Celgard’s products will be developed to conform to your design requirements and to perform at the highest standards in the final product.
Ranges
Celgard has a broad portfolio of products available in a large range of properties. All Celgard® battery separators offer
excellent energy and power performance, dimensional integrity, and chemical and thermal stability in lithium battery applications.