The Hidden Hero of Battery Thermal Management: What Makes Flexible Ceramic Insulation Membranes a Game-Changer?

As electric vehicles (EVs), energy storage systems, and smart electronics continue to evolve, battery safety has become a top priority—especially the ability to prevent thermal runaway.

One emerging material is proving to be a silent game-changer:
Flexible Ceramic Nanofiber Insulation Membrane
Lightweight, bendable, and extremely heat-resistant, this next-gen insulation is quickly becoming a key solution for battery makers aiming to boost safety without sacrificing energy density.

What Is a Flexible Ceramic Nanofiber Insulation Membrane?

Made from high-purity ceramic oxides like SiO₂, Al₂O₃, or ZrO₂, these membranes are fabricated using electrospinning and thermal processing to create ultra-light, porous fiber networks. The result?

• Thermal conductivity as low as 0.025 W/m·K
• Operates from –200°C to 1200°C
• Flexible and ultra-thin (0.5mm–3mm)
• Chemical stability and mechanical strength
• Non-combustible and electrically insulating

Real-World Battery Applications

1. Cell-to-Cell Thermal Barrier in Battery Packs

Placed between individual battery cells to prevent heat propagation during a thermal event.

Required properties:

• Low thermal conductivity (≤0.03 W/m·K)
• Thin form factor (≤1mm)
• Electrical insulation (≥5kV)
• Long-term temperature resistance (≥800°C)

2. Module Shell Thermal Shielding

Acts as a heat-blocking liner inside battery modules, especially effective in EV packs and high-load devices.

Required properties:

• Fire resistance >1000°C
• Flexible for easy fitting
• Compatible with aluminum/plastic casing

3. System-Level Protection in Energy Storage

Used in large-scale battery cabinets or containers to reduce risk of fire spread and thermal failure.

Required properties:

• Large-format roll-to-roll availability
• Environmentally safe, low emission
• Easy integration with BMS or cooling systems

Why Choose NanoFiltech?

As a global leader in nanofiber functional materials, NanoFiltech’s flexible ceramic insulation membranes are designed with precision and performance in mind:

• Customizable oxide blends (SiO₂/Al₂O₃/ZrO₂)
• High uniformity via electrospinning + calcination
• Ultra-lightweight and ultra-thin formats
• Proven field applications in EVs, ESS, and power battery modules

Future Outlook: From Optional to Essential

As global safety and performance standards for batteries continue to tighten — including stricter regulations from UN 38.3, IEC 62660, and UL 2580 — thermal management is evolving from a “nice-to-have” into a non-negotiable requirement.

In this new landscape, flexible ceramic nanofiber insulation membranes are emerging as next-generation thermal barrier materials, offering outstanding thermal resistance, flame retardancy, and mechanical flexibility. They are increasingly being adopted in EV power batteries, energy storage systems (ESS), and consumer electronics batteries as a critical safety layer to delay or prevent thermal runaway propagation. Flexible ceramic membranes will be the industry standard for next-gen battery thermal insulation.

Visit Us @ CIBF2025, May 15–17!

Come experience NanoFiltech’s cutting-edge ceramic nanofiber technology live at the CIBF2025!

Booth No.: 16T026
Booth No.: 16T026
Booth No.: 16T026