Graft-type polymer electrolyte membranes based on poly(ether ether ketone)/nanosilica hybrid films for fuel cell applications

Hamada, Takashi; Fukasawa, Hideyuki; Hasegawa, Shin; Miyashita, Atsumi; Maekawa, Yasunari

doi:10.1016/j.ijhydene.2016.08.039

Cited by 20 publications

(10 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…becomes worse. 39 The compressive stress and the elastic modulus increased with DMAPMA concentration, while compressive strain decreased. The order of magnitude of compressive stress was about 1 MPa, among the monomer concentration from 0.6 mol L À1 to 3.0 mol L À1 .…”

Section: Lipf 6 + H 2 O / Lif + Pof 3 + 2hfmentioning

confidence: 94%

One-step radiation synthesis of gel polymer electrolytes with high ionic conductivity for lithium-ion batteries

Wang

Qiu²,

Peng

et al. 2017

J. Mater. Chem. A

View full text Add to dashboard Cite

We demonstrated a one-step synthesis method for a novel gel polymer electrolyte (named PDMP-Li GPE) based on 3-(dimethylamino) propyl methacrylate, poly(ethylene glycol) diacrylate and 1 M LiPF 6 liquid electrolyte solution by a g-radiation technique for lithium-ion batteries. The resultant PDMP-Li GPE exhibited good thermal stability, excellent mechanical strength and high ionic conductivity, and the highest ionic conductivity reached 8.88 Â 10 À3 S cm À1 at 25 C. The LiFePO 4 /PDMP-Li GPE/graphite pouch-type cell exhibited more than 97% columbic efficiency and the capacity retention was about 86% after 50 cycles at 0.1C. With these outstanding characteristics, it is expected to be a promising candidate for the application in polymer lithium-ion batteries.Scheme 1 The synthesis route of 3-(dimethylamino) propyl methacrylate (DMAPMA).Scheme 2 Schematic illustration of the preparation of the PDMP-Li GPE.

show abstract

Section: Lipf 6 + H 2 O / Lif + Pof 3 + 2hfmentioning

confidence: 94%

One-step radiation synthesis of gel polymer electrolytes with high ionic conductivity for lithium-ion batteries

Wang

Qiu²,

Peng

et al. 2017

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

“…[6][7][8] As such, this radiation technique has been utilized for various applications such as in preparing battery separators, absorber resins, and fuel-cell polymer-electrolyte membranes for portable electronics, vehicles, and domestic cogeneration systems. [9,10] To develop polymerelectrolyte membranes for fuel cells, which require higher conductivity and durability at higher temperatures, grafted membranes consisting of fluorinated polymer substrates that have higher mechanical and thermal strengths have been developed. Among them, ETFEbased proton-and anion-conducting polymer-electrolyte membranes have been studied continuously, with these membranes demonstrating excellent performance characteristics of fuel cells.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic study on radiation‐induced grafting into fluorinated polymer solid films using a swelling‐induced detachment of grafted polymers

Yoshimura

Hiroki

et al. 2020

Journal of Polymer Science

Self Cite

View full text Add to dashboard Cite

The radiation-induced graft polymerization (RGP) of styrene into poly(ethylene-co-tetrafluoroethylene) films was performed at various monomer concentrations and solvents at 60 C. The grafted polystyrene (g-PS) was isolated using the swelling-induced detachment phenomenon, and the numberaveraged molecular weight (Mn) and the number of g-PS (Np) were determined using gel permeation chromatography. The Mn increased consistently with an increase in the grafting time up to 2-3 hours, indicating very low termination rates, which was a result of the "gel effect". This is the first direct evidence of the gradual Mn increase over time using RGP in thermally and chemically stable polymer films such as fluorinated polymers. When the Mn and Np were plotted as a function of the degree of grafting (DOG), sudden Np drops along with rapid Mn increases were observed in the DOG region of 80-90%, indicating negligible initiation and propagation; however, a recombination termination between two propagating g-PS radicals dominated the later part of the grafting process. Further increases in both Mn and Np were observed subsequently, implying that reinitiation and propagation events were triggered by morphological changes, as observed by small-and ultrasmallangle X-ray scattering experiments, which liberated the dormant radicals from the lamellar crystals.

show abstract

“…This method has been used to prepare different types of membranes like anion exchange proton membrane fuel cell [88], proton exchange membrane [89,90] and alkaline proton exchange membrane [82]. Four processes were involved; pre-irradiation, grafting reaction, sulfonation reaction and alkylation reaction.…”

Section: Irradiation Grafting Polymerization Methodsmentioning

confidence: 99%

Fuel cell membranes – Pros and cons

Ogungbemi

Ijaodola

Khatib

et al. 2019

Energy

186

View full text Add to dashboard Cite

This investigation provides a critical analysis of the development of PEM fuel cells and related research with specific focus on the membrane material. The catalytic membrane is the most important component of the PEMFC giving rise to the need for the use of efficient, durable and cheap material to reduce the overall cost of the fuel cell. In this work, the need for materials other than Nafion to be used as PEM membranes is established and a case for the use of composite membranes material in fuel cells is made. Composite membranes increase the cell voltage by up to 11% even at high cell operating temperature of 95°C. They also increase the overall performance of the cell by up to 17% when dry hydrogen is utilised.Non-fluorinated membranes are also suitable for use in fuel cells for portable applications but they are very expensive and less conductive. Partially fluorinated membranes have good mechanical stability but expensive. The fluorinated membrane has high stability under oxidation and reduction conditions. Unfortunately, they only reach their optimum performance at ACCEPTED MANUSCRIPT 1 temperatures below 100°C which makes them of limited use in PEM fuel cells application at higher temperatures.

show abstract

Graft-type polymer electrolyte membranes based on poly(ether ether ketone)/nanosilica hybrid films for fuel cell applications

Cited by 20 publications

References 37 publications

One-step radiation synthesis of gel polymer electrolytes with high ionic conductivity for lithium-ion batteries

One-step radiation synthesis of gel polymer electrolytes with high ionic conductivity for lithium-ion batteries

Mechanistic study on radiation‐induced grafting into fluorinated polymer solid films using a swelling‐induced detachment of grafted polymers

Fuel cell membranes – Pros and cons

Contact Info

Product

Resources

About