Sulfonated poly(ether sulfone)‐based catalyst binder for a proton‐exchange membrane fuel cell

Krishnan, N. Nambi; Kim, Hyoung‐Juhn; Jang, Jong Hyun; Lee, Sangyeop; Cho, EunAe; Oh, In‐Hwan; Hong, Seung‐Chyul; Lim, Tae‐Hoon

doi:10.1002/app.30296

Cited by 13 publications

(5 citation statements)

References 30 publications

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“…In view of the problems of SPEEK membranes, such as brittleness at elevated temperatures, excessive swelling, and relatively high methanol crossover in membranes with a high degree of sulfonation all leading to insufficient durability, many researchers have investigated other poly(arylene ether)-based membranes with aromatic skeletons different from PEEK. − ...…”

Section: Nonfluorinated Acid Ionomer Membranesmentioning

confidence: 99%

Recent Development of Polymer Electrolyte Membranes for Fuel Cells

2012

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Membranes with Proton-Conducting Polymer Components 2793 4. Nonfluorinated Acid Ionomer Membranes 2793 4.1. Poly(arylene ether)-Based Membranes 2793 4.1.1. Modification of SPEEK Membrane 2793 4.1.2. Poly(arylene ether)s with Cross-Linkable Groups 2794 4.1.3. Poly(arylene ether)s with Pendant Sulfonated Groups or Side-Chains 2799 4.1.4. Poly(arylene ether)s with Backbones Containing Heteroatoms Such as F, N, S, and P 2800 4.1.5. Multiblock Copoly(arylene ether)s Synthesized by the Coupling Reaction of Hydrophilic and Hydrophobic Macromonomers 2803 4.2. Polyimide-Based Membranes 2804 4.2.1. SPIs Based on NTDA 2804 4.2.2. SPIs based on BNTDA 2806 4.2.3. SPIs Based on Other Dianhydrides 2807 4.3. Hydrocarbon Polymer with Aliphatic Main-Chain-Based Membranes 2807 4.4. Glass Membranes 2809 5. Polybenzimidazole/H 3 PO 4 Membranes 2809 5.1. Modifications to mPBI 2810 5.1.1. Optimizations of Preparation and Operation of Acid-Doped mPBI System 2810 5.1.2. Modified mPBI/H 3

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Section: Nonfluorinated Acid Ionomer Membranesmentioning

confidence: 99%

Recent Development of Polymer Electrolyte Membranes for Fuel Cells

2012

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“…[82] Therefore, it is also necessary to develop SAPbased electrode binders. [83] Jung et al investigated the durability of PEMFCs with SAP-based membranes and SAP-based electrode binders. [84,85] It was claimed that SAP electrode binders (for example, sulfonated poly(arylene ether sulfone) and SPEEK) were more efficient than conventional Nafion binders at maintaining the long-term stability of the DMFC.…”

Section: Durability Test Of Sap-based Electrode Bindersmentioning

confidence: 99%

Durability of Sulfonated Aromatic Polymers for Proton‐Exchange‐Membrane Fuel Cells

2011

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As a key component of proton-exchange-membrane fuel cells (PEMFCs), proton-exchange membranes (PEMs) must continuously withstand very harsh environments during long-term fuel cell operations. With the coming commercialization of PEMFCs, investigations into the durability and degradation of PEMs are becoming more and more urgent and interesting. Herein, various recent attempts and achievements to improve the durability of sulfonated aromatic polymers (SAPs) are reviewed and some further developments are predicted. Extensive investigations into inexpensive SAPs as alternative electrolyte membranes include modification of available polymer materials; design, synthesis, and optimization of new macromolecules; durability testing; and exploring the degradation mechanisms.

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“…However, it displays some disadvantages, including low thermal and mechanical stability, high cost, and oxygen permeability [ 12 ].These drawbacks make it necessary to search for novel electrolytes based on different polymeric backbones [ 8 ], such as sulfonated poly(ether ether ketone)s (SPEEK) [ 13 , 14 ], sulfonated poly(ether sulfone) (SPES) [ 15 ], or sulfonated polyimides (SPI) [ 16 , 17 ]), which are characterized by their low cost and high chemical and thermal stabilities [ 18 ]. Polysulfone (PSU) has high chemical, thermal, and mechanical stability [ 19 ]. However, these polymeric backbones have lower ionic conductivity than Nafion ® (at low relative humidity (RH) values).…”

Section: Introductionmentioning

confidence: 99%

Using Metal-Organic Framework HKUST-1 for the Preparation of High-Conductive Hybrid Membranes Based on Multiblock Copolymers for Fuel Cells

et al. 2023

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Novel proton-conducting hybrid membranes consisting of sulfonated multiblock copolymer of polysulfone and polyphenylsulfone (SPES) reinforced with a HKUST-1 metal-organic framework (MOF) (5, 10, and 20 wt. %) were prepared and characterized for fuel cell applications. The presence of the MOF in the copolymer was confirmed by means of FE-SEM and EDS. The hybrid membranes show a lower contact angle value than the pure SPES, in agreement with the water uptake (WU%), i.e., by adding 5 wt. % of the MOF, this parameter increases by 20% and 40% at 30 °C and 60 °C, respectively. Additionally, the presence of the MOF increases the ion exchange capacity (IEC) from 1.62 to 1.93 mequivH+ g−1. Thermogravimetric analysis reveals that the hybrid membranes demonstrate high thermal stability in the fuel cell operation temperature range (<100 °C). The addition of the MOF maintains the mechanical stability of the membranes (TS > 85 MPa in the Na+ form). Proton conductivity was analyzed using EIS, achieving the highest value with a 5 wt. % load of the HKUST-1. This value is lower than that observed for the HKUST-1/Nafion system. However, polarization and power density curves show a remarkably better performance of the hybrid membranes in comparison to both the pure SPES and the pure Nafion membranes.

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Sulfonated poly(ether sulfone)‐based catalyst binder for a proton‐exchange membrane fuel cell

Cited by 13 publications

References 30 publications

Recent Development of Polymer Electrolyte Membranes for Fuel Cells

Recent Development of Polymer Electrolyte Membranes for Fuel Cells

Durability of Sulfonated Aromatic Polymers for Proton‐Exchange‐Membrane Fuel Cells

Using Metal-Organic Framework HKUST-1 for the Preparation of High-Conductive Hybrid Membranes Based on Multiblock Copolymers for Fuel Cells

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