A comparative study on the performance of highly conductive sulfonated poly(ether ether ketone) PEM modified by halloysite nanotubes, sulfonated polystyrene and phosphotungstic acid

Samaei, Seyed Hesam‐Aldin; Bakeri, Gholamreza; Lashkenari, Mohammad Soleimani

doi:10.1007/s11814-021-0990-2

Cited by 3 publications

(9 citation statements)

References 44 publications

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“…The three-dimensional pore structure of MIL-101(Cr)-NH 2 and the hydrogen bond formed by NH 2 can improve the efficiency of proton transfer by reducing the distance of proton jumping sites. [30][31][32][33][34] In conclusion, the σ of composite membrane was higher than that of pristine SPEEK.…”

Section: σ and Activation Energy (Ea)mentioning

confidence: 75%

“…This could also corroborate a strong hydrogen bonding network between the NH 2 groups on the MOFs surface and SO 3 H in the SPEEK chains. [30][31][32][33][34] However, the incorporation of HPW caused the increase of the swelling ratio of membranes because of their hydrophilicity. The swelling ratio of the pure SPEEK membrane was 5.43%, and the swelling ratio of SPEEK/HPW@MIL-x for x = 0 wt%, 1 wt%, and 2 wt% were 11.11%, 8.72%, and 7.38%, respectively.…”

Section: Iec Wu and Swelling Ratio Measurementsmentioning

confidence: 99%

“…Polydopamine (PDA) was coated on the surface of inorganic particles (such as GO, HNTs, and CNTs), and therefore was often used to anchor HPW via hydrogen bond. [30][31][32][33][34] SiO 2 , g-C 3 N 4 and chitosan can also anchor HPW directly. For instance, anchoring HPW orderly on the inner wall of the nano channel of mesoporous silica, and thus an efficient proton transfer channel was constructed.…”

Section: Introductionmentioning

confidence: 99%

“…42,43 The resulting PEM exhibited enhanced acid retention capacity and robust dimensional stability. It is worth noting that the strong hydrogen bond [30][31][32][33][34] between HPW and amino group of MIL-101(Cr)-NH 2 constructed a proton conductivity path to facilitate proton transfer, which brought a new idea to design the potential candidate for fuel cells.…”

Section: Introductionmentioning

confidence: 99%

“…The dense membrane surface coated by polyaniline(PANI) can effectively reduce the loss of HPW. Polydopamine (PDA) was coated on the surface of inorganic particles (such as GO, HNTs, and CNTs), and therefore was often used to anchor HPW via hydrogen bond 30–34 . SiO 2 , g‐C 3 N 4 and chitosan can also anchor HPW directly.…”

Section: Introductionmentioning

confidence: 99%

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Anchoring HPW by amino‐modified MIL‐101(Cr) to improve the properties of SPEEK in proton exchange membranes

Zhang

Pei

et al. 2023

J of Applied Polymer Sci

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Incorporating phosphotungstic acid (HPW) in proton exchange membranes (PEMs) is an effective way to improve proton conductivity, but its leakage remains a problem. It can be solved by immobilizing acid in membranes to enhance the stability of PEMs. Herein, we proposed a novel sulfonated poly(ether ether ketone) (SPEEK) composite membrane (SPEEK/HPW@MIL) that was prepared by blending amino-modified MIL-101(Cr) to anchor HPW. In this work, HPW was anchored through hydrogen bond to minimize its leakage and enhance the overall compatibility. The incorporation of MIL-101(Cr)-NH 2 also helped lower the swelling ratio and improve the dimensional stability. Compared with pristine SPEEK and SPEEK/MIL membrane, the proton conductivity of the SPEEK/HPW@MIL composite membrane increased by 26% and 14%, respectively. The superior performance recommended a promising conception for anchoring HPW in PEMs.

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