NFION Unveils NF150-788 Silicone Foam with Ultra-Low Thermal Conductivity for EV Battery Cell Insulation

September 6, 2026

NFION China

Overview

NFION has introduced NF150-788, a silicone foam designed for thermal, cushioning, and electrical insulation between EV battery cells. This material boasts an ultra-low thermal conductivity of ≤0.12 W/(m·K), excellent compression recovery, UL94 V-0 flame retardancy, and reliable electrical isolation. NF150-788 protects battery modules from cell expansion, vibration, and heat transfer, thereby enhancing the safety and lifespan of EV battery packs.

In Depth

Key Findings

NFION has announced NF150-788, a silicone foam developed for thermal insulation, cushioning, and electrical insulation between Electric Vehicle (EV) battery cells. This innovative material is specifically designed to enhance the safety and long-term performance of EV battery modules.

Technical Details

Key technical features of the NF150-788 silicone foam include:

Ultra-Low Thermal Conductivity: Boasts a very low thermal conductivity of ≤0.12 W/(m·K). This effectively suppresses heat transfer between adjacent battery cells, preventing localized temperature spikes. It plays a crucial role in delaying the propagation of thermal runaway.
Excellent Compression Recovery: Exhibits superior compression recovery, accommodating cell expansion and contraction. This ensures stable maintenance of internal battery pack spacing despite aging or pressure changes during use.
UL94 V-0 Flame Retardancy: Achieved a UL94 V-0 flammability rating, significantly reducing the risk of fire propagation. This is an essential characteristic for meeting EV battery safety standards.
Reliable Electrical Insulation: Provides robust electrical insulation to prevent short circuits between battery cells, ensuring safety in high-voltage battery systems.
Cushioning Effect: Also functions as a cushioning material, protecting battery cells from vibration and impact. This reduces the risk of damage from mechanical stress during operation and improves battery durability.

The combination of these properties makes NF150-788 an optimal solution for protection at the module level in EV batteries.

Background & Context

With the widespread adoption of electric vehicles, battery energy density and pack sizes are continuously increasing. This makes thermal management, safety, and durability the most critical challenges in EV battery design. Specifically, there is a strong demand for effective materials that can prevent battery cell expansion and the propagation of thermal runaway. Traditional thermal insulators and cushioning materials have struggled to meet all these requirements at a high level. NFION’s NF150-788 has been specially developed to address these challenges, representing a significant technical contribution to achieving both high performance and safety in EV batteries.

Strategic Significance & Outlook

The NF150-788 silicone foam is expected to contribute significantly to improving safety and performance in the EV battery industry. Its ultra-low thermal conductivity and excellent flame retardancy will be indispensable elements in the design of next-generation EV battery packs. Through this product, NFION aims to support battery manufacturers in developing safer and more reliable electric vehicles, accelerating the realization of a sustainable mobility society. Further technological evolution is anticipated, with potential applications extending to a wider range of energy storage systems.

Source: https://www.nfionthermal.com/Product/s188.html

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