Results 31 to 40 of about 457 (154)

Proton conducting electrospun sulfonated polyether ether ketone graphene oxide composite membranes

RSC Advances, 2017
A series of novel composite membranes, based on sulfonated poly(ether ketone) (SPEEK) with a graphene oxide (GO) layer, were prepared.
Jose Luis Reyes-Rodriguez, Jorge Escorihuela, Abel García-Bernabé, Enrique Giménez, Omar Solorza-Feria, Vicente Compañ   +5 more
openaire   +4 more sources

Ordered Ionic‐Liquid Channels Enable Fast Anhydrous Proton Conduction at up to 240°C for Fuel Cells

Angewandte Chemie, EarlyView.
Infiltration of ionic liquids into a composite scaffold comprised of graphene and boron nitride nanosheets functionalised with positively charged polyethyleneimine produces robust proton conducting membranes for the intermediate temperature electrochemical devices.
Mazin Al‐Alawi, Kaiqiang He, Mattia Belotti, Fanmengjing Wang, Jiffin Oommen, Douglas R. MacFarlane, Hoang‐Long Du, Alexandr N. Simonov, Huanting Wang   +8 more
wiley   +2 more sources

The Effects of Sulfonated Poly(ether ether ketone) Ion Exchange Preparation Conditions on Membrane Properties

Membranes, 2013
A low cost cation exchange membrane to be used in a specific bioelectrochemical system has been developed using poly(ether ether ketone) (PEEK). This material is presented as an alternative to current commercial ion exchange membranes that have been ...
Rebecca S. L. Yee, Kaisong Zhang, Bradley P. Ladewig   +2 more
doaj   +1 more source

Influence of Silica/Sulfonated Polyether-Ether Ketone as Polymer Electrolyte Membrane for Hydrogen Fueled Proton Exchange Membrane Fuel Cells

International Journal of Science and Engineering, 2011
The operation of non-humidified condition of proton exchange membrane fuel cell (PEMFC) using composite sPEEK-silica membrane is reported. Sulfonated membrane of PEEK is known as hydrocarbon polyelectrolyte membrane for PEMFC and direct methanol fuel ...
Sri Handayani, Eniya Listiani Dewi Listiani Dewi   +1 more
doaj   +1 more source

Effect of Covalent Organic Frameworks Containing Different Groups on Properties of Sulfonated Poly(ether ether ketone) Matrix Proton Exchange Membranes

Nanomaterials, 2022
The rich −SO3H groups enable sulfonated poly (ether ether ketone) (SPEEK) to possess excellent proton conductivities in proton exchange membrane (PEM), but cause excessive water absorption, resulting in the decline of dimensional stability.
Xiaoyu Meng, Yinan Lv, Lei Ding, Luman Peng, Qiwang Peng, Chuanbo Cong, Haimu Ye, Qiong Zhou   +7 more
doaj   +1 more source

Preparation and Properties of SeO2 and PWA Binary Compound Doped SPEEK Proton Exchange Membranes

International Journal of Electrochemical Science, 2018
Herein, we prepared proton exchange membranes by adding SeO2 and phospho-wolframic acid (PWA) into DS 85 wt% sulfonated polyether ether ketone (SPEEK). The result indicates that their proton conductivity is increasing without decrease of their methanol ...
Zhicai He, Zhengping Zhao, Chenyu Pan, Lixin Xue, Mingqiang Zhong   +4 more
doaj   +1 more source

Dynamic investigation of hydrocarbon proton exchange membrane Fuel Cell [PDF]

Hydrogen, Fuel Cell & Energy Storage, 2018
Sulfonated polyether ether ketone (SPEEK) is categorized in a nonfluorinated aromatic hydrocarbon proton exchange membrane (PEM) group and considered as a suitable substitute for common per-fluorinated membranes, such as Nafion, due to wider operating ...
Milad Shakouri Kalfati, Aida Karimi, Soosan Rowshanzamir   +2 more
doaj   +1 more source

Optimization of sPEEK/S-TiO2 nanocomposite membranes using response surface methodology for low-temperature fuel cell

Results in Engineering
Polyether-ether-ketone (PEEK), a speciality thermoplastic polymer is treated with concentrated sulfuric acid to introduce sulfonated repeating units in its backbone.
Mawlood Maajal Ali, Ali Basem, Anmar Sh Jasim, Dheyaa J. Jasim, Ameer Azam, S.J.A. Rizvi, Yusra A. AlBahadli, Maryam Hussein Abdulameer   +7 more
doaj   +1 more source

Microcystin-LR Removal from Water via Enzymatic Linearization and Ultrafiltration

Toxins, 2022
Microcystin-LR (MC-LR) is a toxin produced by cyanobacteria that can bloom in freshwater supplies. This study describes a new strategy for remediation of MC-LR that combines linearization of the toxin using microcystinase A, MlrA, enzyme with rejection ...
Abelline Fionah, Cannon Hackett, Hazim Aljewari, Laura Brady, Faisal Alqhtani, Isabel C. Escobar, Audie K. Thompson   +6 more
doaj   +1 more source

Sulfonated polyether ether ketone – sulfonated graphene oxide composite membranes for polymer electrolyte fuel cells

RSC Adv., 2014
Sulfonated polyether ether ketone – sulfonated graphene oxide composite membranes for polymer electrolyte fuel cells have been prepared. Sulfonic acid functionalised graphene oxide nanosheets were incorporated into the sulfonated polyether ether ketone structure to interconnect the proton transport channels.
Kumar R, Mamlouk M, Scott K
openaire   +2 more sources