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Thinkre™ PEM for Vanadium Flow Batter

NEPEM Proton exchange membrane for vanadium flow battery

Category:

Thinkre™ Perfluorosulfonic PEM


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Description

 

The strength,moisture  retention and vanadium  resistance of ion exchange  membranes  were  improved  by  introducing  special  materials  into the tape casting process.

 

◮  Thickness and Basis Weight Properties

Membrane Type

Thickness(microns)(um)

Weight(g/m²)

N-212

51

102

N-1125

62

122

N-113

75

148

N-1135

80

172

N-114

100

197

N-115

125

246

 

◮  Physical and Other Properties

Physicaland Other Properties

Index Parameters

Test Method

Tensile Test
(23℃,50%RH)

 

 

Tensile Strength(MPa)

≥28

GB/T 20042.3-2022

Tensile Modulu(MPa)

≥400

GB/T 20042.3-2022

Elongation at break(%)

≥120

GB/T 20042.3-2022

Specific Gravity

1.97

 

Other Properties

Index Parameters

Test Method

Conductivity(S/cm)

≥0.100

GB/T 20042.3-2022

Acid Capacity(meq/g)

1.00±0.05

GB/T 20042.3-2022

 

◮  Hydrolytic Propertie

Hydrolytic Properties

Index Parameters

Test Method

 Water Content(%)

5.0±3.0

GB/T 20042.3-2022

Water Uptake(%)

50.0±5.0

GB/T 20042.3-2022

(23℃,50% RH)Thickness Change,% increase

water soaked at 23℃ 50% RH

≤5

GB/T 20042.3-2022

water soaked at 100℃ 50% RH

≤15

GB/T 20042.3-2022

Linear expansion,% increase(23℃,50% RH)

water soaked at 23℃ 50% RH

≤5

GB/T 20042.3-2022

water soaked at 100℃ 50% RH

≤18

GB/T 20042.3-2022

 

◮  Measurements taken with membrane conditioned to 23° ℃,50% RH.
◮  Conductivity measurements at 23 ℃,100% RH.
◮  A base titration procedure measures the equivalents of sulfonic acid group in the resin, and uses the measurement to calculate the acid capacity or equivalent weight of the membrane.
◮  Water content of membrane conditioned to 23*C and 50%RH(dry weight basis).
◮  Water uptake from dry membrane to conditioned in water at 100C for l hour(dry weight basis)