UL94 V-0 Certified battery material
ETP058 Achieves UL94 V-0 Certification for Advanced Battery Applications
Cork-based material becomes the first cork agglomerate to achieve UL94 V-0 certification, validating its fire performance for electric vehicle and energy storage battery applications. BlogAs battery technologies continue to evolve, material selection has become increasingly critical to improving safety, thermal management and system reliability. Components integrated between and around battery cells are expected to perform multiple functions simultaneously, helping delay heat propagation, accommodate cell expansion and maintain mechanical integrity under demanding operating conditions.
To address these requirements, we developed ETP058, a cork-based engineered composite for battery applications. ETP058 has now achieved UL94 V-0 certification, becoming the first cork agglomerate to meet this internationally recognized fire safety standard. The certification confirms the material's self-extinguishing behavior after flame exposure, providing independent validation of its suitability for safety-critical battery applications.
A certified solution for battery safety
UL94 V-0 is one of the most widely recognized fire safety classifications for materials used in electrical and electronic applications. For battery manufacturers, compliance with this standard provides greater confidence during material selection and supports qualification processes for increasingly demanding battery systems.
Developed for applications such as cell spacers and module spacers, ETP058 combines low thermal conductivity, mechanical adaptability and certified flame-retardant performance within a single cork-based engineered composite. By integrating these characteristics into one material, it helps battery designers address multiple performance requirements while supporting safer battery architectures.
ETP058 - Technical Data
| Property | Standard | Values |
|---|---|---|
| Density (kg/m³) | ASTM F1315 | 330–400 |
| Compressibility at 1,0 MPa (%) | Internal procedure | 18,0 |
| Thermal conductivity (W/mK) | ISO 8301 | 0,054 |
| Flame resistance | UL94 | V0* |
* ≥ 2mm
The data provided in this table represents typical values. This information is not intended to be used as a purchasing specification and does not imply suitability for use in a specific application. Failure to select the proper product may result in either equipments damage or personal injury. Please contact us regarding specific application recommendations. Amorim Cork Solutions expressly disclaims all warranties, including any implied warranties or merchantability or of fitness for a particular purpose. Amorim Cork Solutions is not liable for any indirect special, incidental, consequential, or punitive damages as a result of using the information listed in this tabl. Any of its material specification sheets, its products or any future use or re-use of them by any person or entity.
The role of cork in advanced battery materials
Cork is a renewable natural raw material harvested from the bark of the cork oak tree without harming the tree itself. Its naturally occurring microcellular structure provides a unique combination of low thermal conductivity, resilience and lightweight performance.
Integrated into an engineered composite such as ETP058, these characteristics contribute to delaying heat transfer while accommodating the dimensional changes that occur during battery operation. This enables cork to support battery designs that require both high technical performance and a more sustainable material approach.
Supporting the next generation of battery systems
The achievement of UL94 V-0 certification reinforces ETP058's position as a qualified solution for safety-critical battery applications. By combining certified flame-retardant performance with delayed thermal propagation, mechanical adaptability and structural integrity during high-temperature events, ETP058 addresses several of the key requirements shaping next-generation battery design.
Already commercially available, ETP058 expands the range of certified cork-based materials available for electric vehicle and energy storage systems, providing battery manufacturers with greater confidence during material selection and product qualification.
As demand for safer and more efficient battery systems continues to grow, ETP058 demonstrates how cork-based engineered materials can meet internationally recognized fire safety requirements while supporting the industry's increasing focus on performance, reliability and sustainability.