Dimensionally stable multication-crosslinked poly(arylene piperidinium) membranes for water electrolysis

Wang, Xiu Qin; Lammertink, Rob G.H.

doi:10.1039/d1ta10820d

Cited by 63 publications

(49 citation statements)

References 61 publications

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“…The AEMs maintained their ionic conductivity and flexibility after 2000 h in 1 M KOH solution at 100 °C . At the same time, the durability and performance of the membrane can also be further improved by introducing a flexible spacer, arrangement of various cations, , cross-linking, − branching, and other methods. Gao et al synthesized a series of novel cross-linked AEMs, which combine a hydrophobic fluorine-based skeleton with a hydrophilic long flexible polycationic side chain, and showed good chemical stability when immersed in 10 M KOH for 1000 h at 80 °C …”

Section: Introductionmentioning

confidence: 95%

High Conductive Anion Exchange Membranes from All-Carbon Twisted Intrinsic Microporous Polymers

et al. 2022

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This study obtained solution-tractable anion-selective membranes with intrinsic porous and highly ionic conductive capabilities by a convenient route. We used the coplanar structure of 9,9-dimethylxanthene to construct a rigid twisted intrinsic microporous all-carbon skeleton PDI with up to 363.4 m 2 g −1 of Brunauer−Emmett−Teller surface, and the pore was filled with a quaternary ammonium salt containing long flexible alkyl chains, which produced an efficient means of OH − transport. The conductivity of the resulting polymer (QPDI-100) is reached as high as 205 mS cm −1 at 80 °C. The size stability was determined to be good at high conductance and swelling ratio is less than 15% at 80 °C. QPDI-a exhibited good stability under alkaline conditions, and 90% of the conductivity of QPDI-100 was retained after being immersed in 1 M NaOH solution at 60 °C for 40 days. The power density of H 2 −O 2 fuel cells at 60 °C was 437.7 mW cm −2 . The prepared intrinsic porous anion exchange membranes (AEMs) demonstrate potential for the development of anion exchange membrane fuel cells. This membrane design strategy paves the way for a new generation of AEMs for the purposes of electrochemical energy conversion and storage.

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Section: Introductionmentioning

confidence: 95%

High Conductive Anion Exchange Membranes from All-Carbon Twisted Intrinsic Microporous Polymers

et al. 2022

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“…39). Alkaline water electrolysis employing the all-inone MEA-S outperformed most previously reported ALWE 4,[36][37][38][39][40][41] and AEMWE without platinum group metals (PGMs) 14,21,[42][43][44][45][46][47] (Fig. 4f Supplementary Table 3).…”

Section: Resultsmentioning

confidence: 50%

Oriented intergrowth of the catalyst layer in membrane electrode assembly for alkaline water electrolysis

Wan

Pang

et al. 2022

Nat Commun

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The application of membrane electrode assemblies is considered a promising approach for increasing the energy efficiency of conventional alkaline water electrolysis. However, previous investigations have mostly focused on improving membrane conductivity and electrocatalyst activity. This study reports an all-in-one membrane electrode assembly obtained by de novo design. The introduction of a porous membrane readily enables the oriented intergrowth of ordered catalyst layers using solvothermal methods, leading to the formation of an all-in-one MEA for alkaline water electrolysis. This all-in-one MEA features ordered catalyst layers with large surface areas, a low-tortuosity pore structure, integrated catalyst layer/membrane interfaces, and a well-ordered OH- transfer channel. Owing to this design, a high current density of 1000 mA cm−2 is obtained at 1.57 V in 30 wt% KOH, resulting in a 94% energy efficiency. This work highlights the prospects of all-in-one membrane electrode assemblies in designing next-generation high-performance alkaline water electrolysis.

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“…37 Subsequently, the ex-situ stability of PAP-based AEMs has been veried to exceed 1500 h in 1 M aq. NaOH at 80 C. 38,39 A number of different successful approaches have been reported to further improve membrane durability and performance, including the introduction of exible spacers, 40 arrangements with multiple cations, 41,42 crosslinking, [43][44][45] branching 46 and reinforcement. 47 For example, we recently reported on a series of cationically modied poly(biphenyl piperidine)s which retained >92% of the cations aer storage in 2 M aq.…”

Section: Introductionmentioning

confidence: 99%

Improving poly(arylene piperidinium) anion exchange membranes by monomer design

et al. 2022

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Dimensionally stable multication-crosslinked poly(arylene piperidinium) membranes for water electrolysis

Abstract: Cross-linking is a widely employed process to improve the dimensional stability of anion exchange membranes (AEMs). However, crosslinking often comes at the expense of ion exchange capacity and ionic conductivity....

Cited by 63 publications

References 61 publications

High Conductive Anion Exchange Membranes from All-Carbon Twisted Intrinsic Microporous Polymers

High Conductive Anion Exchange Membranes from All-Carbon Twisted Intrinsic Microporous Polymers

Oriented intergrowth of the catalyst layer in membrane electrode assembly for alkaline water electrolysis

Improving poly(arylene piperidinium) anion exchange membranes by monomer design

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