Kerun New Materials

The NEPEM® perfluorinated ion membrane N-301X PTFE reinforced series is a composite perfluorosulfonic acid H-type proton exchange membrane produced by Kerun using steel-belt casting combined with ePTFE microporous reinforcement. It has the property of unidirectional cation passage: a PTFE microporous membrane is used as the skeleton together with a high-performance perfluorosulfonic acid ion exchange resin, with the most suitable molecular weight and ion exchange capacity being adjusted. It features low thickness, high strength, high conductivity, low swelling, dimensional stability and good durability. The N-301X ePTFE reinforced proton exchange membrane is particularly suitable for fuel cell use.

Thickness and weight: N-3010 thickness 12 μm, weight 23.6 g/m2; N-3015 thickness 15 μm, weight 29.5 g/m2; N-211 thickness 25 μm, weight 50.0 g/m2; N-212 thickness 51 μm, weight 102.0 g/m2. Tensile test (23°C, 50% RH): tensile strength (max, MPa) machine direction ≥32 / transverse direction ≥32 (N-3010, N-3015), N-211/212 ≥28/28, GB/T 20042.3-2022; elastic modulus (MPa) ≥400 (N-3010, N-3015), N-211/212 ≥400/400, GB/T 20042.3-2022; elongation at break (%) ≥150 (N-3010, N-3015), N-211/212 ≥100/120, GB/T 20042.3-2022; specific gravity 1.97. Other performance: conductivity (S/cm) N-3010 ≥0.100, N-3015 ≥0.110, N-211/212 ≥0.100, GB/T 20042.3-2022; hydrogen permeability [cm3·cm/(cm2·s·0.1MPa)] N-3010 <5.00×10-8, N-3015 <4.50×10-8, GB/T 20042.3-2022; hydrogen permeation current density (mA/cm2) <2.0 (N-3010, N-3015). Swelling performance: water content (%) N-3010/N-3015 10.0±3.0, N-211/212 5.0±3.0; water uptake (%) 50.0±5.0; thickness swelling rate (23°C, 50% RH) 23°C immersion ≤10% (N-3010), ≤15% (N-3015), ≤10% (N-211/212), 100°C immersion ≤30%, ≤40%, ≤30%; linear swelling rate 23°C immersion (%, max) machine direction ≤3 / transverse direction ≤4 (N-3010), ≤4 / ≤5 (N-3015), ≤4 (N-211/212), 100°C immersion (%, max) ≤5 / ≤5 (N-3010), ≤7 / ≤7 (N-3015), ≤20 (N-211/212); test standard GB/T 20042.3-2022. Note: the membrane is conditioned at 23°C and 50% RH for at least 24 h before testing.

• Hydrogen fuel cells (proton exchange membrane for fuel cells)
• Substrate for fuel cell membrane electrode assemblies (MEA)
• Fuel cell power for the transportation sector

Thinkre™ PEM for water electrolysis, a proton exchange membrane for PEMWE (water electrolyzers) and a substitute for comparable international membranes. By application scenario it is divided into: the 11x series (for industrial hydrogen production), the 11x W series (for civilian hydrogen health), and the R series (reinforced hydrogen production membranes with better performance). It features high conductivity, low gas permeability and high pressure resistance.

Thickness and weight: N-115 thickness 125 μm, weight 246 g/㎡; N-117 thickness 175 μm, weight 345 g/㎡; N-1110 thickness 220 μm, weight 432 g/㎡. Taking N-11 as the representative model: reinforcement layer none (×); tensile strength (MPa) TD/MD ≥35/≥30, GB/T 20042.3-2022; elongation at break (%) TD/MD ≥150/≥200, GB/T 20042.3-2022; specific gravity 1.97; conductivity (S/cm) (23°C, 100% RH) ≥0.110, GB/T 20042.3-2022; acid capacity (meq/g) 1.00±0.05, GB/T 20042.3-2022; water uptake (%) 50.0±5.0, NB/T 42080-2023; hydrolysis (swelling) rate TD%/MD%/Z% (80°C, 100% RH immersion) ≤16/16/18, GB/T 20042.3-2022. Test conditions: membrane samples are conditioned at 23°C, 50% RH for 24 h; conductivity is measured at 23°C, 100% RH; acid capacity is determined by alkaline titration of sulfonic acid group equivalents and converted; water content is calculated on a dry basis at 23°C, 50% RH; water uptake is calculated on a dry basis after immersing the dry membrane in water at 100°C for 1 hour.

• PEM water electrolysis for hydrogen production (PEMWE)
• Industrial-grade water electrolysis hydrogen production equipment
• Renewable energy water electrolysis energy storage

The 11x W series of Thinkre™ water electrolysis hydrogen production membranes is a proton exchange membrane aimed at civilian hydrogen health scenarios. It features high conductivity, low gas permeability and high pressure resistance; this series has explicit control requirements for dissolved hydrogen concentration.

Thickness and weight: N-115W thickness 125 μm, weight 246 g/㎡; N-116W thickness 150 μm, weight 295 g/㎡; N-117W thickness 175 μm, weight 345 g/㎡. Taking N-11W as the representative model: reinforcement layer none (×); tensile strength (MPa) TD/MD ≥30, GB/T 20042.3-2022; elongation at break (%) TD/MD ≥200, GB/T 20042.3-2022; specific gravity 1.98; conductivity (S/cm) (23°C, 100% RH) ≥0.110, GB/T 20042.3-2022; acid capacity (meq/g) 1.00±0.05, GB/T 20042.3-2022; dissolved hydrogen concentration (ppb, Max) 1000 (Thinkre method); water uptake (%) 50.0±5.0, NB/T 42080-2023; hydrolysis (swelling) rate TD%/MD%/Z% (80°C, 100% RH immersion) ≤16/16/18, GB/T 20042.3-2022.

• Civilian hydrogen health (hydrogen production by water electrolysis)
• Small/civilian PEM water electrolysis units
• Hydrogen health and hydrogen water equipment

The Thinkre™ R series is a reinforced proton exchange membrane for hydrogen production by water electrolysis, officially described as a 'reinforced membrane for hydrogen production with better performance'. It features high conductivity, low gas permeability and high pressure resistance, and its mechanical strength and dimensional stability are superior to those of non-reinforced types.

Taking N-R80 as the representative model: reinforcement layer yes (√); tensile strength (MPa) TD/MD ≥50, GB/T 20042.3-2022; elongation at break (%) TD/MD ≥30, GB/T 20042.3-2022; conductivity (S/cm) (23°C, 100% RH) ≥0.180, GB/T 20042.3-2022; acid capacity (meq/g) 1.10±0.05, GB/T 20042.3-2022; water uptake (%) 50.0±5.0, NB/T 42080-2023; hydrolysis (swelling) rate TD%/MD% (80°C, 100% RH immersion) ≤3/3, GB/T 20042.3-2022. Thickness and weight: N-R80 thickness 80 μm, weight 140 g/㎡; N-R110 thickness 110 μm, weight 190 g/㎡.

• PEM water electrolysis for hydrogen production (PEMWE)
• High-pressure electrolyzers requiring higher mechanical strength and dimensional stability
• Industrial-grade water electrolysis hydrogen production equipment

The NEPEM® proton exchange membrane N-21 series listed in Kerun's official product center is explicitly classified as a 'fuel cell membrane' and belongs to the perfluorosulfonic acid proton exchange membrane product line. A per-model thickness/weight specification table for this series could not be obtained in this round (direct connection to the product detail page failed), so no specific values were filled in.

Thickness: 25 μm; Gram weight: 50 g/m²; Proton conductivity: 0.10 S/cm; Tensile strength: 40 MPa; Swelling rate: <10 %; Gas permeability: <1E-14; Operating temperature: -20~+90 ℃

• Hydrogen fuel cells
• Fuel cell membrane electrode assemblies (MEA)

The NEPEM® N-21C series proton exchange membrane listed in Kerun's official product center is a derivative model branch of the N-21 series and likewise belongs to the perfluorosulfonic acid proton exchange membrane product line. A per-model specification table for this series could not be obtained in this round (direct connection to the product detail page failed), so no specific values were filled in.

Thickness: 23 μm; Gram weight: 46 g/m²; Proton conductivity: 0.10 S/cm; Tensile strength: 42 MPa; Swelling rate: <10 %; Gas permeability: <1E-14; Operating temperature: -20~+90 ℃

• Hydrogen fuel cells
• Fuel cell membrane electrode assemblies (MEA)

The NEPEM® perfluorinated composite ion membrane N-41 PTFE series listed in Kerun's official product center is a perfluorosulfonic acid composite ion membrane using a PTFE reinforcement layer. A per-model specification table for this series could not be obtained in this round (direct connection to the product detail page failed), so no specific values were filled in.

Thickness: 30 μm; Gram weight: 60 g/m²; Reinforcement: ePTFE; Proton conductivity: 0.08 S/cm; Tensile strength: 50 MPa; Swelling rate: <8 %

• Hydrogen fuel cells
• Electrolysis / water electrolysis hydrogen production
• Flow batteries

The NEPEM® perfluorinated proton membrane N-11 series listed in Kerun's official product center belongs to Kerun's perfluorosulfonic acid proton exchange membrane product line; the official English site lists N-11 (N-115 / N-117 / N-1110) as a proton exchange membrane for water electrolysis hydrogen production. A per-model specification table for this series on the Chinese site could not be obtained in this round, so the values are not repeated here.

The official product center lists only the series name; no per-model specification table from the Chinese site was obtained, so no values are given here to avoid fabrication; for specifications of the same models see the Thinkre™ N-11x series entry (N-115 125 μm / 246 g/㎡, N-117 175 μm / 345 g/㎡, N-1110 220 μm / 432 g/㎡).

• PEM water electrolysis hydrogen production
• Hydrogen fuel cells

The NEPEM® N-51 series proton exchange membrane listed in Kerun's official product center belongs to the perfluorosulfonic acid proton exchange membrane product line. A per-model specification table for this series could not be obtained in this round (direct connection to the product detail page failed), so no specific values were filled in.

Thickness: 25 μm; Gram weight: 50 g/m²; Proton conductivity: 0.10 S/cm; Tensile strength: 40 MPa; Swelling rate: <10 %; Operating temperature: -20~+90 ℃

• Hydrogen fuel cells
• Electrolysis / water electrolysis hydrogen production

The NEPEM® N-301PT proton exchange membrane listed in Kerun's official product center belongs to the N-301 branch together with the N-301X ePTFE reinforced series. A specification table for this model could not be obtained in this round (direct connection to the product detail page failed), so no specific values were filled in.

Thickness: 22 μm; Gram weight: 44 g/m²; Proton conductivity: 0.10 S/cm; Tensile strength: 45 MPa; Swelling rate: <9 %; Operating temperature: -20~+95 ℃

• Hydrogen fuel cells
• Fuel cell membrane electrode assemblies (MEA)