Results 141 to 150 of about 592 (175)

Study of sulfonated polyether ether ketone with pendant lithiated fluorinated sulfonic groups as ion conductive binder in lithium-ion batteries

Journal of Power Sources, 2014
In an attempt to reduce the Li+ concentration polarization and electrolyte depletion from the electrode porous space, sulfonated polyether ether ketone with pendant lithiated fluorinated sulfonic groups (SPEEK-FSA-Li) is prepared and attempted as ionic conductivity binder.
Zengbin Wei, Lixin Xue, Feng Nie, Jianfang Sheng, Qianru Shi, Xiulan Zhao   +5 more
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Flexible humidity sensors for wireless monitoring based on electrospun sulfonated polyether ether ketone (SPEEK) nanofibres

Sensors and Actuators B: Chemical, 2020
Abstract The development of flexible and high-performance humidity sensors for continuous wireless monitoring is receiving increasing attention. In this work, electrospun sulfonated polyether ether ketone (SPEEK) nanofibres with different sulfonation degrees were prepared and directly deposited onto flexible substrates for humidity sensor ...
Jonghyun Choi, Robert Abbel, Kate Parker   +2 more
exaly   +2 more sources

Electrical properties of sulfonated polyether ether ketone/polyetherimide blend membranes doped with inorganic acids

Journal of Polymer Science, Part B: Polymer Physics, 2000
The influence of blending with polyetherimide (PEI) and doping with HCl and H3PO4 on the properties of sulfonated polyether ether ketone (SPEEK) was studied. Blending with PEI first results in an increase and then in a decrease in membrane swelling at PEI concentrations greater than 5%.
S M Javaid Zaidi, S Kaliaguine
exaly   +3 more sources

Investigation, modeling, and optimization of parameters affecting sulfonated polyether ether ketone membrane-electrode assembly

International Journal of Hydrogen Energy, 2019
Abstract A model of a membrane-electrode assembly (MEA) with a Sulfonated Poly Ether-Ether Ketone (SPEEK) membrane is presented and compared with Nafion membrane MEA. The model used the specific hydration and proton conductivity curves developed for SPEEK membrane and accounted for feed-gas momentum and mass transfer, electro-potential in both the ...
Soosan Rowshanzamir
exaly   +2 more sources

A sulfonated and nitrated polyether ether ketone/polyvinyl chloride modified atmosphere packaging delays the deterioration of grapes

Journal of the Science of Food and Agriculture
AbstractBACKGROUNDPolyether ether ketone (PEEK) was modified by a sulfuric and nitric acid mixed system to improve the solubility of the material and the gas selective permeability of the film. SN1 and SN5, synthesized from mixed acid systems (with ratios of nitric acid and sulfuric acid of 1:1 and 1:5, respectively) were chosen because they had ...
Yuting Huang
exaly   +3 more sources

Composite membrane containing graphene oxide in sulfonated polyether ether ketone in microbial fuel cell applications

International Journal of Hydrogen Energy, 2015
Abstract In this study, a single layer graphene oxide is successfully synthesized and used as a nano-filler in a self-fabricated sulfonated polyether ether ketone (SPEEK) to make a composite proton exchange membrane, graphene oxide/SPEEK (GO-SPEEK). The properties of GO-SPEEK, Nafion® 117 and SPEEK are then compared to ascertain their selectivity to ...
Jun Xing Leong, Wan Ramli Wan Daud, Mostafa Ghasemi   +2 more
exaly   +2 more sources

Comb-like solid polymer electrolyte based on polyethylene glycol-grafted sulfonated polyether ether ketone

Electrochimica Acta, 2017
Solid polymer electrolytes based on a novel comb-like copolymer, polyethylene glycol-grafted sulfonated polyether ether ketone (SPEEK-g-PEG), was designed and synthesized through the reaction between partially hydroxyl-functionalized sulfonated polyether
Menglan Zhang, Ji Hu, Xiaoen Wang
exaly   +1 more source

Sulfonated polyether ether ketone composite membrane using tungstosilicic acid supported on silica–aluminium oxide for direct methanol fuel cell (DMFC)

Journal of Membrane Science, 2009
New composite membranes were prepared using sulfonated polyether ether ketone (SPEEK) polymer and inorganic proton conducting fillers developed from tungstosilicic acids (SiWA) loaded on silica-aluminium oxide (SiO(2)-Al(2)O(3)) Composite. SiWA was fixed
Ahmad Fauzi Ismail, Nur Hidayati Othman
exaly   +2 more sources

Proton conducting composite membranes from polyether ether ketone and heteropolyacids for fuel cell applications

Journal of Membrane Science, 2000
A series of composite membranes based on sulfonated polyether ether ketone with embedded powdered heteropolycompounds was prepared and their electrochemical and thermal properties were studied. An increase in degree of sulfonation as well as introduction
S M Javaid Zaidi, Michael D Guiver, S Kaliaguine   +2 more
exaly   +2 more sources

Characterization and In Vitro Studies of Sulfonated Polyether Ether Ketone/Polyether Sulfone/Nano Hydroxyapatite Composite

International Journal of Polymeric Materials and Polymeric Biomaterials, 2014
Sulfonated polyether ether ketone (SPEEK)/polyether sulfone (PES)/nano hydroxyapatite (nHAP) composites were prepared with different nHAP filler concentrations. FTIR analysis confirmed the blend formation between SPEEK and PES. Surface morphology pictures showed agglomeration of the nHAP particles at higher percentage of loading.
Kalambettu Aravind, Dharmalingam Sangeetha   +1 more
openaire   +1 more source