Phosphonate ionic liquid immobilised SBA-15/SPEEK composite membranes for high temperature proton exchange membrane fuel cells

Elumalai, Vijayakumar; Ganesh, T.; Selvakumar, C.; Dharmalingam, Sangeetha

doi:10.1016/j.mset.2018.08.003

Cited by 9 publications

(14 citation statements)

References 37 publications

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“…Table 2 summarized some of the literature about the SHPs/additives composite membranes. [78][79][80][81][82][83][84][85][86][87][88] For example, Kang et al [83] have developed a thermochemically stable and proton conductive sulfonated aromatic PEM based on poly(arylene perfluorophenylsulfonic acid)s (denoted as SP100) and achieved 40 mS cm −1 and 232 mS cm −1 at 120 °C-50%RH and 120 °C-90% RH, respectively. Zhang et al [89] have prepared a SPEEK/HPW composite membrane with improved proton conductivity, and it was comparable to that of Nafion 212 membrane.…”

Section: Composite Membranes Tension Strength [Mpa]mentioning

confidence: 99%

Rational Materials and Structure Design for Improving the Performance and Durability of High Temperature Proton Exchange Membranes (HT‐PEMs)

Song,

Zhao,

Zhou

et al. 2023

Advanced Science

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Hydrogen energy as the next‐generation clean energy carrier has attracted the attention of both academic and industrial fields. A key limit in the current stage is the operation temperature of hydrogen fuel cells, which lies in the slow development of high‐temperature and high‐efficiency proton exchange membranes. Currently, much research effort has been devoted to this field, and very innovative material systems have been developed. The authors think it is the right time to make a short summary of the high‐temperature proton exchange membranes (HT‐PEMs), the fundamentals, and developments, which can help the researchers to clearly and efficiently gain the key information. In this paper, the development of key materials and optimization strategies, the degradation mechanism and possible solutions, and the most common morphology characterization techniques as well as correlations between morphology and overall properties have been systematically summarized.

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Section: Composite Membranes Tension Strength [Mpa]mentioning

confidence: 99%

Rational Materials and Structure Design for Improving the Performance and Durability of High Temperature Proton Exchange Membranes (HT‐PEMs)

Song,

Zhao,

Zhou

et al. 2023

Advanced Science

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“…IEC can be described as the capability of the AEMs functional groups to carry out ions displacement, which is integrated and loosely attached to its polymer backbone chain structure by oppositely charged ions in the adjacent solution (Elumalai et al, 2018). IEC demonstrates the quantity of functional groups or active sites in an anion exchange membrane that is accountable for ion exchange or facilitates the transfer of hydroxide (Kumar et al, 2018).…”

Section: Ion Exchange Capacity (Iec)mentioning

confidence: 99%

QPVA-Based Electrospun Anion Exchange Membrane for Fuel Cells

Samsudin

Hacker

2023

Int. J. Renew. Energy Dev.

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The anion exchange membrane is one of the core components that play a crucial and inseparable role in alkaline anion exchange membrane fuel cells. Anion exchange membranes (AEMs) were prepared from quaternary ammonium poly(vinyl alcohol) (QPVA) by an electrospinning method. QPVA was used both as material for electrospun fiber mats and as filler for the inter-fiber void matrix. The objective of this work is to investigate the influence of the inter-fibers void matrix filler concentration on the properties and performance of eQPVA-x AEMs. FTIR spectra were used to identify the chemical structures of the AEMs. The primary functional groups of PVA and quaternary ammonium-based ion conducting cation were detected. The surface morphology of QPVA nanofiber mats and eQPVA-x AEMs was observed using SEM. Electrospun nanofiber structures of QPVA with an average size of 100.96 nm were observed in SEM pictures. The ion exchange capacity, swelling properties, water uptake, and OH-ions conductivity were determined to evaluate the performance of eQPVA-x AEMs. By incorporating the QPVA matrix of 5 wt.% concentration, the eQPVA-5.0 AEMs attained the highest ion exchange capacity, water uptake, swelling properties, and OH− conductivity of 0.82 mmol g−1, 25.5%, 19.9%, and 2.26 m×s cm−1, respectively. Electrospun QPVA AEMs have the potential to accelerate the development of alkaline anion exchange membrane fuel cells.

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“…The PEM (SPEEK/PU/SPEEK/BMIM) 100 /60%PA exhibited conductivity and tensile strength of 103 mS/cm (at 160 • C) and 2.38 MPa, respectively. Elumalai et al [115] synthesized composite membranes based on phosphonate IL immobilised mesoporous silica SBA-15 as a filler to the SPEEK polymer matrix. In this case, the observed conductivity was 10.2 mS/cm with 6% SBA-15/SPEEK at 140 • C. At the same temperature, the mechanical strength was measured as 23 MPa, while a power density of 183 mW/cm 2 was also obtained.…”

Section: Polybenzimidazole (Pbi)-based Pemmentioning

confidence: 99%

A Critical Review on the Use of Ionic Liquids in Proton Exchange Membrane Fuel Cells

et al. 2022

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This work provides a comprehensive review on the incorporation of ionic liquid (ILs) into polymer blends and their utilization as proton exchanges membranes (PEM). Various conventional polymers that incorporate ILs are discussed, such as Nafion, poly (vinylidene fluoride), polybenzimidazole, sulfonated poly (ether ether ketone), and sulfonated polyimide. The methods of synthesis of IL/polymer composite membranes are summarized and the role of ionic liquids as electrolytes and structure directing agents in PEM fuel cells (PEMFCs) is presented. In addition, the obstacles that are reported to impede the development of commercial polymerized IL membranes are highlighted in this work. The paper concludes that the presence of certain ILs can increase the conductivity of the PEM, and consequently, enhance the performance of PEMFCs. Nevertheless, the leakage of ILs from composite membranes as well as the limited long-term thermal and mechanical stability are considered as the main challenges that limit the employment of IL/polymer composite membranes in PEMFCs, especially for high-temperature applications.

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Phosphonate ionic liquid immobilised SBA-15/SPEEK composite membranes for high temperature proton exchange membrane fuel cells

Cited by 9 publications

References 37 publications

Rational Materials and Structure Design for Improving the Performance and Durability of High Temperature Proton Exchange Membranes (HT‐PEMs)

Rational Materials and Structure Design for Improving the Performance and Durability of High Temperature Proton Exchange Membranes (HT‐PEMs)

QPVA-Based Electrospun Anion Exchange Membrane for Fuel Cells

A Critical Review on the Use of Ionic Liquids in Proton Exchange Membrane Fuel Cells

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