Sulfonated polyether ether ketone (SPEEK) polymers are fluorine-free alternative materials for flexible and environmentally friendly ion exchange applications. With -SO₃H (sulfonic acid) groups in their structure, their degree of sulfonation (%DS) can be adjusted as needed, making them compatible with various functional properties. Thanks to their tunable functionality, they can be combined with small molecules, functional compounds or other polymers and used in energy, environmental and separation technologies, mostly in membrane form. At SUNUM, we provide SPEEK-based solutions for demanding applications such as fuel cells, electrochemical energy storage systems, and membrane-based separation processes, where high mechanical strength, ionic conductivity, and chemical stability are essential.
The SPEEK (Sulfonated Polyether Ether Ketone) series is available in three distinct degrees of sulfonation (DS), each offering tailored properties for specific applications in proton exchange systems. The specifications are as follows:
1. SPEEK47
o Degree of Sulfonation (DS): 47%
o Ion Exchange Capacity (IECₘ): 1.39 meq g⁻¹
o Proton Conductivity (σᵈ): 32 mS cm⁻¹
2. SPEEK50
o Degree of Sulfonation (DS): 50%
o Ion Exchange Capacity (IECₘ): 1.48 meq g⁻¹
o Proton Conductivity (σᵈ): 41 mS cm⁻¹
3. SPEEK57
o Degree of Sulfonation (DS): 57%
o Ion Exchange Capacity (IECₘ): 1.64 meq g⁻¹
o Proton Conductivity (σᵈ): 79 mS cm⁻¹
SPEEK is being produced as part of the following projects:
- HOP-ON-Hopping on Artificial Intelligence Guided Development of Vanillin-based Flow Batteries-VanillaFlow-HORIZON-WIDERA-2023-ACCESS-06-01 SUNUM 2025-2027,
- TÜBİTAK 1071 Project-CETP-Development of Hydrogen Organic Regenerative Fuel Cells for Fixed Energy Storage Applications, HERCULES, SUNUM 2025-2028
- TÜBİTAK 1001 Project, “Improved Efficient Hydrogen/Vanadium Flow Batteries with MXene, Nitrogen-Doped Carbon Nanomaterials, and Deep Eutectic Solvents,” SUNUM 2024-2027.
For details sunumestore.com
