Application of spirobiindane-based microporous poly(ether sulfone)s as polymeric binder on solid alkaline exchange membrane fuel cells

Choi, Jieun; Kim, Man Ho; Han, Jun; Chae, Ji Eon; Lee, Won Hee; Lee, Young Moo; Lee, So Young; Jang, Jong Hyun; Kim, Jin Young; Henkensmeier, Dirk; Yoo, Sung Jong; Sung, Yung Eun; Kim, Hyoung Juhn

doi:10.1016/j.memsci.2018.09.048

Cited by 35 publications

(20 citation statements)

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“…H 2 , O 2 , and water vapor permeabilities of PFTP-13, PFBP-14, PFTP-0, PFBP-0, commercial FAA-3-20 and Nafion 212 membranes were performed using a laboratory made gas permeability testing system (Supplementary Fig. 30 ) connected with a gas chromatograph (GC, 490 Micro GC, Agilent Technologies, USA) and two mass flow controllers (MFC, M3030V, Line Tech, Korea) operating at different RHs (from 0% to 90% RH) at 60 °C ( T ) under a 2.2 bar unilateral back pressure 47 , 48 . The gas permeability ( P ) can be calculated by the following equation: …”

Section: Methodsmentioning

confidence: 99%

Poly(fluorenyl aryl piperidinium) membranes and ionomers for anion exchange membrane fuel cells

et al. 2021

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Low-cost anion exchange membrane fuel cells have been investigated as a promising alternative to proton exchange membrane fuel cells for the last decade. The major barriers to the viability of anion exchange membrane fuel cells are their unsatisfactory key components—anion exchange ionomers and membranes. Here, we present a series of durable poly(fluorenyl aryl piperidinium) ionomers and membranes where the membranes possess high OH− conductivity of 208 mS cm−1 at 80 °C, low H2 permeability, excellent mechanical properties (84.5 MPa TS), and 2000 h ex-situ durability in 1 M NaOH at 80 °C, while the ionomers have high water vapor permeability and low phenyl adsorption. Based on our rational design of poly(fluorenyl aryl piperidinium) membranes and ionomers, we demonstrate alkaline fuel cell performances of 2.34 W cm−2 in H2-O2 and 1.25 W cm−2 in H2-air (CO2-free) at 80 °C. The present cells can be operated stably under a 0.2 A cm−2 current density for ~200 h.

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Section: Methodsmentioning

confidence: 99%

Poly(fluorenyl aryl piperidinium) membranes and ionomers for anion exchange membrane fuel cells

et al. 2021

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“…In fact, three molecules‐H 2 , O 2 , and water‐are involved in the electrode reaction in AEMFCs. The gas permeability of PDTP‐ x copolymers was systematically investigated at different RHs at 60 °C using a custom made gas permeability testing system and employing Barrer (where 1 Barrer=10 −10 cm 3 (STP) cm cm −2 s −1 cm Hg −1 ) as the well‐known unit for permeability in the gas separation community [41, 42] . Figure 2 b shows that the H 2 permeability of PDTP‐ x tends to decrease with increasing DP content.…”

Section: Resultsmentioning

confidence: 99%

“…In fact, three molecules-H 2 ,O 2 ,and water-are involved in the electrode reaction in AEMFCs.T he gas permeability of PDTP-x copolymers was systematically investigated at different RHs at 60 8 8Cu sing ac ustom made gas permeability testing system and employing Barrer (where 1Barrer = 10 À10 cm 3 (STP) cm cm À2 s À1 cm Hg À1 )a st he well-known unit for permeability in the gas separation community. [41,42] Figure 2b shows that the H 2 permeability of PDTP-x tends to decrease with increasing DP content. Humidified PDTP-25 and PDTP-50 membranes displayed lower H 2 permeabilities (< 10 Barrer) than those of commercial FAA-3-50 ( % 13 Bar-Barrer) and pristine PTP AEMs ( % 10 Barrer), implying excellent fuel gas (H 2 )b arrier properties,w hich ensure that…”

Section: Water and Gas Transport Behaviormentioning

confidence: 97%

Poly(Alkyl‐Terphenyl Piperidinium) Ionomers and Membranes with an Outstanding Alkaline‐Membrane Fuel‐Cell Performance of 2.58 W cm⁻²

Chen

Wang

et al. 2021

Angewandte Chemie

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Aryl-ether-free anion-exchange ionomers (AEIs) and membranes (AEMs) have become an important benchmark to address the insufficient durability and power-density issues associated with AEM fuel cells (AEMFCs). Here,w e present aliphatic chain-containing poly(diphenyl-terphenyl piperidinium) (PDTP) copolymers to reduce the phenyl content and adsorption of AEIs and to increase the mechanical properties of AEMs.S pecifically,P DTP AEMs possess excellent mechanical properties (storage modulus > 1800 MPa, tensile strength > 70 MPa), H 2 fuel-barrier properties (< 10 Barrer), good ion conductivity,a nd ex-situ stability. Meanwhile,P DTP AEIs with low phenyl content and highwater permeability displaye xcellent peak power densities (PPDs). The present AEMFCs reacho utstanding PPDs of 2.58 Wcm À2 (> 7.6 Acm À2 current density) and 1.38 Wcm À2 at 80 8 8Ci nH 2 /O 2 and H 2 /air,r espectively,a long with as pecific power (PPD/catalyst loading) over 8Wmg À1 ,w hichi st he highest record for Pt-based AEMFCs so far.

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“…Indeed, this poor compatibility has been shown in the EIS, SEM, and peel strength test results of other literature [ 11 , 12 ]. We expect that it would also be possible to improve cell performance by applying hydrocarbon binders bearing the same backbone as the membrane [ 10 , 30 , 31 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Sulfonated Poly(Arylene Ether Sulfone)s Containing Aliphatic Moieties for Effective Membrane Electrode Assembly Fabrication by Low-Temperature Decal Transfer Methods

et al. 2021

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The purpose of this study was to investigate the effect of the aliphatic moiety in the sulfonated poly(arylene ether sulfone) (SPAES) backbone. A new monomer (4,4’-dihydroxy-1,6-diphenoxyhexane) was synthesized and polymerized with other monomers to obtain partially alkylated SPAESs. According to differential scanning calorimetry analysis, the glass transition temperature (Tg) of these polymers ranged from 85 to 90 °C, which is 100 °C lower than that of the fully aromatic SPAES. Due to the low Tg values obtained for the partially alkylated SPAESs, it was possible to prepare a hydrocarbon electrolyte membrane-based membrane electrode assembly (MEA) with Nafion® binder in the electrode through the use of a decal transfer method, which is the most commercially suitable system to obtain an MEA of proton exchange membrane fuel cells (PEMFCs). A single cell prepared using this partially alkylated SPAES as an electrolyte membrane exhibited a peak power density of 539 mW cm−2.

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Application of spirobiindane-based microporous poly(ether sulfone)s as polymeric binder on solid alkaline exchange membrane fuel cells

Cited by 35 publications

References 42 publications

Poly(fluorenyl aryl piperidinium) membranes and ionomers for anion exchange membrane fuel cells

Poly(fluorenyl aryl piperidinium) membranes and ionomers for anion exchange membrane fuel cells

Poly(Alkyl‐Terphenyl Piperidinium) Ionomers and Membranes with an Outstanding Alkaline‐Membrane Fuel‐Cell Performance of 2.58 W cm⁻²

Synthesis of Sulfonated Poly(Arylene Ether Sulfone)s Containing Aliphatic Moieties for Effective Membrane Electrode Assembly Fabrication by Low-Temperature Decal Transfer Methods

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Application of spirobiindane-based microporous poly(ether sulfone)s as polymeric binder on solid alkaline exchange membrane fuel cells

Cited by 35 publications

References 42 publications

Poly(fluorenyl aryl piperidinium) membranes and ionomers for anion exchange membrane fuel cells

Poly(fluorenyl aryl piperidinium) membranes and ionomers for anion exchange membrane fuel cells

Poly(Alkyl‐Terphenyl Piperidinium) Ionomers and Membranes with an Outstanding Alkaline‐Membrane Fuel‐Cell Performance of 2.58 W cm−2

Synthesis of Sulfonated Poly(Arylene Ether Sulfone)s Containing Aliphatic Moieties for Effective Membrane Electrode Assembly Fabrication by Low-Temperature Decal Transfer Methods

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Poly(Alkyl‐Terphenyl Piperidinium) Ionomers and Membranes with an Outstanding Alkaline‐Membrane Fuel‐Cell Performance of 2.58 W cm⁻²