Results 41 to 50 of about 592 (175)

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

Cost-Effective Membrane and Advanced Electrode for Stable Polysulfide-Ferricyanide Flow Battery

Energy Material Advances, 2022
Based on inexpensive, safe, and environmentally friendly active redox species, neutral polysulfide-ferrocyanide redox flow batteries (PFRFBs) have attracted much attention for large-scale energy storage.
Xuechun Lou, Hu Fu, Jian Xu, Yong Long, Su Yan, Haitao Zou, Bo Lu, Murong He, Mei Ding, Xiaobo Zhu, Chuankun Jia   +10 more
doaj   +1 more source

Preparation and Characterisation of Composite Sulfonated Polyether Ether Ketone for Direct Methanol Fuel Cells

Journal of Physics: Conference Series, 2019
Abstract Direct Methanol Fuel Cell (DMFC), uses a proton exchange polymer electrolyte which one of the key components developed to realize the commercialization of fuel cells in transportation and portable equipment. Poly Ether Ether Ketone (PEEK) is a thermoplastic material that has a combination of physico-chemical and good mechanical ...
H Purnama, M Mujiburohman, M F Hakim, N Hidayati   +3 more
openaire   +1 more source

Composite sPEEK with Nanoparticles for Fuel Cell's Applications: Review [PDF]

, 2012
The membranes in fuel cells must both conduct protons and serve as a barrier for fuel. This review discusses modifications nanoparticles of sPEEK (sulfonated polyether-ether ketone), sPEEK have advantages properties as fuel cell’s membranes such as ...
Arief , Rahman Hakim, Tutuk , Djoko Kusworo, Aprilina , Purbasari, Eniya, Listiani Dewi   +3 more
core  

Study on the properties of blended membranes of sulfonated polyaromatic ether polymer and sulfonated polyether ether ketone

, 2021
This thesis mainly applies the sulfonated polyaromatic ether polymer to the thin film analysis of proton exchange membranes. This thesis mainly mixes the structure of SA8 developed by Li Xufeng with the structure of sulfonated polyether ether ketone ...
Huang, Chun-Yen
core