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Thinkre™ PEM for Redox Flow Battery(RFB)

NEPEM Proton exchange membrane for redox flow battery/RFB. Thinkre ion exchange membrane could be applied in vanaduim flow battery, Iron Salt Battery, Iron-chromium flow batteries etc.

Category:

Thinkre™ PFSA PEM


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Description

 

Thinkre ion exchange membrane represents the heart of flow battery, PEM water electrolyzer and hydrogen fuel cell. Alongside our experts, Thinkre group has already opened up the whole industrial chain from TFE to PFSA resins to PEMs and achieved industrialization with 3 production bases.

The strength, durability, moisture retention and vanadium resistance of Thinkre ion exchange membranes for Redox Flow Battery (RFB) are improved by introducing special materials during the tape casting process of membrane preparation. In this way Thinkre PEM can provide worldwide leading-edge solution for RFB.

In addition, the new generation of Thinkre PEMs for flow batteries adopts self-developed perfluorosulfonic acid resin, which further improves the coulombic efficiency and energy efficiency in the application of flow energy storage batteries. 

◮  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

Typical Value

Test Method

Tensile Test
(23℃,50%RH)

 

 

Tensile Strength(MPa)

≥30

GB/T 20042.3-2022

Tensile Modulus(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)

≥0.130

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

     Thickness Swelling Rate at 23℃,50% RH (% 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  at 23℃,50% RH (% increase)

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 for 24h.
◮  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℃ and 50%RH(dry weight basis).
◮  Water uptake from dry membrane to conditioned in water at 100℃ for lh(dry weight basis).