VoltXpert® High-Temperature-Resistant Lithium-Ion Battery Composite Separator Series
PA13 / PL13 High-Safety Composite Separator Solutions

With the rapid development of new energy vehicles and energy storage systems, lithium-ion batteries are continuously evolving toward higher energy density, enhanced safety levels, and longer cycle life. As a critical internal safety component, the separator not only physically isolates the cathode and anode, but also directly affects ion transport efficiency, thermal stability, and overall cell reliability.

The VoltXpert® high-temperature-resistant lithium-ion battery composite separator series has been developed in this context. Through a multilayer composite structure and functional ceramic coating technology, it achieves an optimal balance among safety protection, mechanical stability, and electrochemical performance.

The series currently includes two core models:

• VoltXpert® PA13: Double-sided PI + Al₂O₃ high-safety separator

• VoltXpert® PL13: PI + Al₂O₃ / LATP asymmetric functional separator

Both products are based on a 9 μm PE base film with functional coatings, resulting in a total thickness of approximately 13 μm. They balance safety performance and high energy density requirements, making them suitable for power batteries, energy storage batteries, and specialized power applications.

1. Product Structure Design

The VoltXpert® separator series adopts an organic–inorganic composite structure design. Through the synergistic effect of polymer base film and ceramic coatings, it significantly enhances thermal stability and mechanical strength under high-temperature conditions while maintaining excellent ionic conductivity.

PA13 Symmetric Safety Structure

Structure composition:

9 μm PE base film + double-sided 2 μm PI + Al₂O₃ composite coating

This structure emphasizes thermal safety and mechanical protection:

• PI provides excellent high-temperature resistance

• Al₂O₃ ceramic layer forms an insulating protective barrier

• Double-sided coating enhances overall puncture resistance

Suitable for power battery systems with extremely high safety requirements.

PL13 Asymmetric Functional Structure

Structure composition:

9 μm PE base film + single-sided 2 μm PI + Al₂O₃ coating + single-sided 2 μm LATP coating

This design optimizes performance through functional division on both sides:

CP side (Ceramic Protection):

• PI + Al₂O₃ composite layer

• Provides thermal resistance and mechanical protection

LP side (Lithium-conductive Protection):

• LATP solid electrolyte coating

• Enhances interfacial ionic conductivity

• Suppresses side reactions and improves cycle life

This structure enables synergistic optimization of safety protection and electrochemical performance.

2. Structural Comparison

3. Key Performance Comparison

Summary:

• PA13 focuses on extreme thermal stability and mechanical protection

• PL13 enhances interfacial ion transport while maintaining safety

• The two products are complementary in positioning

4. Core Performance Advantages

1. High Thermal Stability

• PA13 breakdown temperature reaches 205℃, far exceeding conventional polyolefin separators

• PL13 maintains low shrinkage (1–1.5%) at 200℃ for 30 minutes

• Low thermal shrinkage effectively reduces thermal runaway risk

2. Enhanced Mechanical Protection

• Puncture strength > 500 gf

• Tensile strength ~200 MPa

Effectively resists:

• Electrode burr penetration

• Cell expansion pressure

• Winding process stress

Ensures structural stability of the cell.

3. Efficient Ion Transport

• Thin structure and optimized porosity ensure good ionic conductivity

• PA13 permeability: 114 s/100 ml

• PL13 permeability: 124 s/100 ml

• LATP layer in PL13 further enhances interfacial conductivity

4. Stable Interfacial Bonding

• Strong adhesion between ceramic coating and PE base film

• Peel strength up to 100–187 N/m

• Prevents delamination during long-term cycling

5. Excellent Chemical Stability

• Ceramic coating provides strong electrolyte corrosion resistance

• Compatible with:

  • High-nickel ternary systems

  • High-voltage cathode materials

  • Long-cycle energy storage batteries

5. Typical Application Scenarios

New Energy Vehicle Power Batteries
Maintains stable separation under fast charging and high-temperature driving conditions.

Commercial & Industrial Energy Storage Systems
Provides higher safety redundancy under outdoor high-temperature and long-cycle conditions.

Specialized Power Supplies
Applicable to:

• Aerospace power systems

• Military equipment

• Industrial backup power

Suitable for extreme environments.

High-Rate & Long-Cycle Cells
PL13, with its LATP functional layer, is especially suitable for:

• Fast-charging batteries

• High-rate batteries

• Long-life energy storage cells

6. Product Value Summary

The VoltXpert® high-temperature-resistant composite separator series achieves comprehensive improvements in both safety and performance through innovative composite structure technology:

• Ultra-high thermal stability

• Excellent mechanical strength

• Efficient ionic conductivity

• Stable interfacial structure

• Outstanding chemical compatibility

VoltXpert® PA13
Focuses on extreme safety protection and high-temperature stability, ideal for high-safety power batteries.

VoltXpert® PL13
Achieves dual optimization of safety and electrochemical performance through the LATP functional layer, making it more suitable for high-rate and long-cycle battery systems.

Together, these two products form a high-performance separator solution, providing reliable core material support for new energy vehicle batteries, energy storage systems, and high-end power applications.

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VoltXpert® PA13 High-Temperature Resistant Composite Separator for Lithium-Ion Batteries（USD$）

Partial references citing our materials (from Google Scholar)

Carbon Dioxide Reduction

1. ACS Nano Strain Relaxation in Metal Alloy Catalysts Steers the Product Selectivity of Electrocatalytic CO₂ Reduction

The bipolar membrane (Fumasep FBM) in this paper was purchased from SCI Materials Hub, which was used in rechargeable Zn-CO₂ battery tests. The authors reported a strain relaxation strategy to determine lattice strains in bimetal MNi alloys (M = Pd, Ag, and Au) and realized an outstanding CO₂-to-CO Faradaic efficiency of 96.6% with outstanding activity and durability toward a Zn-CO₂ battery.

2. Front. Chem. Boosting Electrochemical Carbon Dioxide Reduction on Atomically Dispersed Nickel Catalyst

In this paper, Vulcan XC-72R was purchased from SCI Materials Hub. Vulcan XC 72R carbon is the most common catalyst support used in the anode and cathode electrodes of Polymer Electrolyte Membrane Fuel Cells (PEMFC), Direct Methanol Fuel Cells (DMFC), Alkaline Fuel Cells (AFC), Microbial Fuel Cells (MFC), Phosphoric Acid Fuel Cells (PAFC), and many more!

3. Adv. Mater. Partially Nitrided Ni Nanoclusters Achieve Energy-Efficient Electrocatalytic CO₂ Reduction to CO at Ultralow Overpotential

An AEM membrane (Sustainion X37-50 Grade RT, purchased from SCI Materials Hub) was activated in 1 M KOH for 24 h, washed with ultra-purity water prior to use.

4. Adv. Funct. Mater. Nanoconfined Molecular Catalysts in Integrated Gas Diffusion Electrodes for High-Current-Density CO₂ Electroreduction

In this paper (Supporting Information), an anion exchanged membrane (Fumasep FAB-PK-130 obtained from SCI Materials Hub (www.scimaterials.cn)) was used to separate the catholyte and anolyte chambers.

SCI Materials Hub: we also recommend our Fumasep FAB-PK-75 for the use in a flow cell.

5. Appl. Catal. B Efficient utilization of nickel single atoms for CO₂ electroreduction by constructing 3D interconnected nitrogen-doped carbon tube network

In this paper, the Nafion 117 membrane was obtained from SCI Materials Hub.

6. Vacuum Modulable Cu(0)/Cu(I)/Cu(II) sites of Cu/C catalysts derived from MOF for highly selective CO₂ electroreduction to hydrocarbons

In this paper, Proton exchange membrane (Nafion 117), Nafion D520, and Toray 060 carbon paper were purchased from SCI Materials Hub.

7. National Science Review Confinement of ionomer for electrocatalytic CO2 reduction reaction via efficient mass transfer pathways

An anion exchange membrane (PiperION-A15-HCO3) was obtained from SCI Materials Hub.

8. Catalysis Communications Facilitating CO2 electroreduction to C2H4 through facile regulating {100} & {111} grain boundary of Cu2O

Carbon paper (TGPH060), membrane solution (Nafion D520), and ionic membrane (Nafion N117) were obtained from Wuhu Eryi Material Technology Co., Ltd (a company under SCI Materials Hub).

Batteries

1. J. Mater. Chem. A Blocking polysulfides with a Janus Fe3C/N-CNF@RGO electrode via physiochemical confinement and catalytic conversion for high-performance lithium–sulfur batteries

Graphene oxide (GO) in this paper was obtained from SCI Materials Hub. The authors introduced a Janus Fe3C/N-CNF@RGO electrode consisting of 1D Fe3C decorated N-doped carbon nanofibers (Fe3C/N-CNFs) side and 2D reduced graphene oxide (RGO) side as the free-standing carrier of Li2S6 catholyte to improve the overall electrochemical performance of Li-S batteries.

2. Joule A high-voltage and stable zinc-air battery enabled by dual-hydrophobic-induced proton shuttle shielding

This paper used more than 10 kinds of materials from SCI Materials Hub and the authors gave detailed properity comparsion.

The commercial IEMs of Fumasep FAB-PK-130 and Nafion N117 were obtained from SCI Materials Hub.

Gas diffusion layers of GDL340 (CeTech) and SGL39BC (Sigracet) and Nafion dispersion (Nafion D520) were obtained from SCI Materials Hub.

Zn foil (100 mm thickness) and Zn powder were obtained from the SCI Materials Hub.

Commercial 20% Pt/C, 40% Pt/C and IrO2 catalysts were also obtained from SCI Materials Hub.

3. Journal of Energy Chemistry Vanadium oxide nanospheres encapsulated in N-doped carbon nanofibers with morphology and defect dual-engineering toward advanced aqueous zinc-ion batteries

In this paper, carbon cloth (W0S1011) was obtained from SCI Materials Hub. The flexible carbon cloth matrix guaranteed the stabilization of the electrode and improved the conductivity of the cathode.

4. Energy Storage Materials Defect-abundant commercializable 3D carbon papers for fabricating composite Li anode with high loading and long life

The 3D carbon paper (TGPH060 raw paper) were purchased from SCI Materials Hub.

5. Nanomaterials A Stable Rechargeable Aqueous Zn–Air Battery Enabled by Heterogeneous MoS2 Cathode Catalysts

Nafion D520 (5 wt%), and carbon paper (GDL340) were received from SCI-Materials-Hub.

6. SSRN An Axially Directed Cobalt-Phthalocyanine Covalent Organic Polymer as High-Efficient Bifunctional Catalyst for Zn-Air Battery

Carbon cloth (W0S1011) and other electrochemical consumables required for air cathode were provided by SCI Materials Hub.

Oxygen Reduction Reaction

1. J. Chem. Eng. Superior Efficiency Hydrogen Peroxide Production in Acidic Media through Epoxy Group Adjacent to Co-O/C Active Centers on Carbon Black

In this paper, Vulcan XC 72 carbon black, ion membrane (Nafion N115, 127 μL), Nafion solution (D520, 5 wt%), and carbon paper (AvCarb GDS 2230 and Spectracarb 2050A-1050) were purchased from SCI Materials Hub.

2. Journal of Colloid and Interface Science Gaining insight into the impact of electronic property and interface electrostatic field on ORR kinetics in alloy engineering via theoretical prognostication and experimental validation

The 20 wt% Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) were purchased from SCI Materials Hub. This work places emphasis on the kinetics of the ORR concerning Pt3M (M = Cr, Co, Cu, Pd, Sn, and Ir) catalysts, and integrates theoretical prognostication and experimental validation to illuminate the fundamental principles of alloy engineering.

Water Electrolysis

1. International Journal of Hydrogen Energy Gold as an efficient hydrogen isotope separation catalyst in proton exchange membrane water electrolysis

The cathodic catalysts of Pt/C (20 wt%, 2–3 nm) and Au/C (20 wt%, 4–5 nm) were purchased from SCI Materials Hub.

2. Small Science Silver Compositing Boosts Water Electrolysis Activity and Durability of RuO2 in a Proton-Exchange-Membrane Water Electrolyzer

Two fiber felts (0.35 mm thickness, SCI Materials Hub) were used as the porous transport layers at both the cathode and the anode.

3. Advanced Functional Materials Hierarchical Crystalline/Amorphous Heterostructure MoNi/NiMoOx for Electrochemical Hydrogen Evolution with Industry-Level Activity and Stability

Anion-exchange membrane (FAA-3-PK-130) was obtained from SCI Materials Hub website.

Fuel Cells

1. Polymer Sub-two-micron ultrathin proton exchange membrane with reinforced mechanical strength

Gas diffusion electrode (60% Pt/C, Carbon paper) was purchased from SCI Materials Hub.

Characterization

1. Chemical Engineering Journal Electrochemical reconstitution of Prussian blue analogue for coupling furfural electro-oxidation with photo-assisted hydrogen evolution reaction

An Au nanoparticle film was deposited on the total reflecting plane of a single reflection ATR crystal (SCI Materials Hub, Wuhu, China) via sputter coater.