Thin Reinforced Poly(2,6-dimethyl-1,4-phenylene oxide)-based Anion-exchange Membranes with High Mechanical and Chemical Stabilities

Song, Hyeon-Bee; Kim, Do-Hyeong; Kang, Moon‐Sung

doi:10.1246/cl.190671

Cited by 10 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The decrease in TS was mainly due to the decreased compatibility of the membrane. The increase in the PECH content in the membrane led to an increase in the phase separation, which reduced the compatibility of the membrane and led to the decrease in the TS value of the membrane [43]. Compared with previously reported membranes ), the prepared membranes showed higher TS values.…”

Section: Thermal and Mechanical Properties Of Membranesmentioning

confidence: 67%

Anion Exchange Membrane Based on BPPO/PECH with Net Structure for Acid Recovery via Diffusion Dialysis

Shen

Gong

Chen

et al. 2023

IJMS

View full text Add to dashboard Cite

In order to improve the performance of the anion exchange membrane (AEM) used in acid recovery from industrial wastewater, this study adopted a new strategy in which brominated poly (2,6-dimethyl-1,4-phenyleneoxide) (BPPO) and polyepichlorohydrin (PECH) were used as the polymer backbone of the prepared membrane. The new anion exchange membrane with a net structure was formed by quaternizing BPPO/PECH with N,N,N,N-tetramethyl-1,6-hexanediamine (TMHD). The application performance and physicochemical property of the membrane were adjusted by changing the content of PECH. The experimental study found that the prepared anion exchange membrane had good mechanical performance, thermostability, acid resistance and an appropriate water absorption and expansion ratio. The acid dialysis coefficient (UH+) of anion exchange membranes with different contents of PECH and BPPO was 0.0173–0.0262 m/h at 25 °C. The separation factors (S) of the anion exchange membranes were 24.6 to 27.0 at 25 °C. Compared with the commercial BPPO membrane (DF-120B), the prepared membrane had higher values of UH+ and S in this paper. In conclusion, this work indicated that the prepared BPPO/PECH anion exchange membrane had the potential for acid recovery using the DD method.

show abstract

Section: Thermal and Mechanical Properties Of Membranesmentioning

confidence: 67%

Anion Exchange Membrane Based on BPPO/PECH with Net Structure for Acid Recovery via Diffusion Dialysis

Shen

Gong

Chen

et al. 2023

IJMS

View full text Add to dashboard Cite

show abstract

“…From this point of view, Nafion, a perfluorinated cation-exchange membrane (CEM), has been widely utilized as a separation membrane in VRFB systems, but it is suffering from some drawbacks, such as high membrane cost and significant vanadium crossover. As an alternative, therefore, the use of anion-exchange membranes (AEMs) has recently attracted attention, and hydrocarbonbased IEMs are being actively developed to lower the expensive membrane cost [12,13]. However, in the case of hydrocarbon-based IEMs, despite their excellent electrochemical characteristics, they are difficult to apply to practical systems due to their poor chemical stability, so research on this is urgently needed [2,10,14,15].…”

Section: Introductionmentioning

confidence: 99%

Thin Reinforced Ion-Exchange Membranes Containing Fluorine Moiety for All-Vanadium Redox Flow Battery

2021

Self Cite

View full text Add to dashboard Cite

In this work, we developed pore-filled ion-exchange membranes (PFIEMs) fabricated for the application to an all-vanadium redox flow battery (VRFB) by filling a hydrocarbon-based ionomer containing a fluorine moiety into the pores of a porous polyethylene (PE) substrate having excellent physical and chemical stabilities. The prepared PFIEMs were shown to possess superior tensile strength (i.e., 136.6 MPa for anion-exchange membrane; 129.9 MPa for cation-exchange membrane) and lower electrical resistance compared with commercial membranes by employing a thin porous PE substrate as a reinforcing material. In addition, by introducing a fluorine moiety into the filling ionomer along with the use of the porous PE substrate, the oxidation stability of the PFIEMs could be greatly improved, and the permeability of vanadium ions could also be significantly reduced. As a result of the evaluation of the charge–discharge performance in the VRFB, it was revealed that the higher the fluorine content in the PFIEMs was, the higher the current efficiency was. Moreover, the voltage efficiency of the PFIEMs was shown to be higher than those of the commercial membranes due to the lower electrical resistance. Consequently, both of the pore-filled anion- and cation-exchange membranes showed superior charge–discharge performances in the VRFB compared with those of hydrocarbon-based commercial membranes.

show abstract

“…Among them, the polymer framework and matrix material of the AEM are crucial to the performance and service life of the fuel cell. Therefore, heteroaromatic ring polymers have been widely used as AEM materials due to their good thermal properties, mechanical stability and alkali resistance, such as polysulfone (PSU), [ 12–16 ] poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO), [ 17–22 ] poly(arylene ether sulfone), [ 23–25 ] and poly(ether‐ether)ketone (PEEK). [ 26–32 ] Commonly, the OH – conducting functional group involves functionalized quaternary ammonium, [ 33–38 ] imidazolium, [ 39–43 ] guanidium, [ 44–51 ] phosphonium, [ 52–56 ] or sulphonium.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Branch Polyethyleneimine (BPEI) Crosslinked Anion Exchange Membrane Based on Poly(styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene) (SEBS)

Xiao

Zhang

Dong

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

Anion exchange membranes with chemical stability, high conductivity, and high mechanical properties play an important role in alkaline fuel cells. Here, a series of CPX anion exchange membranes based on poly(styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene) (SEBS) and branch polyethyleneimine (BPEI) are achieved by casting, in which BPEI acts as both a crosslinking agent and an OH− conducting functional group. The introduction of BPEI facilitates the formation of good hydrophilic/hydrophobic microphase separation structure, thus improving the ion transport channel of CPX membrane. The physicochemical and electrochemical properties of the CPX membrane are significantly improved when the mass ratio of SEBS to BPEI is within an appropriate range. The OH− conductivity of the CP2 membrane (the mass ratio of SEBS to BPEI is 2) can reach 66.63 mS cm−1 at 80 °C, and more than 80% initial OH− conductivity is maintained in 1.0 m NaOH solution for 20 d at 60 °C. The strategy of using a polymer with excellent alkali resistance and oxidation resistance as the main body and introducing a conductive group that can construct microphase separation can simultaneously improve the conductivity and membrane stability. This viable strategy is a promising construction method for anion exchange membranes that can be applied to fuel cells.

show abstract

Thin Reinforced Poly(2,6-dimethyl-1,4-phenylene oxide)-based Anion-exchange Membranes with High Mechanical and Chemical Stabilities

Cited by 10 publications

References 26 publications

Anion Exchange Membrane Based on BPPO/PECH with Net Structure for Acid Recovery via Diffusion Dialysis

Anion Exchange Membrane Based on BPPO/PECH with Net Structure for Acid Recovery via Diffusion Dialysis

Thin Reinforced Ion-Exchange Membranes Containing Fluorine Moiety for All-Vanadium Redox Flow Battery

Preparation of Branch Polyethyleneimine (BPEI) Crosslinked Anion Exchange Membrane Based on Poly(styrene‐b‐(ethylene‐co‐butylene)‐b‐styrene) (SEBS)

Contact Info

Product

Resources

About