Results 21 to 30 of about 963 (161)

Composite membranes anchoring phosphotungstic acid by β-cyclodextrins modified halloysite nanotubes

Polymer Testing, 2021
Anchoring phosphotungstic acid (HPW) on insoluble inorganic fillers is a facile and effective approach to suppress its leakage in the proton exchange membrane.
Shaojian He, Yuna Ai, Wenxu Dai, Shaoxiong Zhai, Hao Song, Jun Lin   +5 more
doaj   +1 more source

Anchoring Water Soluble Phosphotungstic Acid by Hybrid Fillers to Construct Three-Dimensional Proton Transport Networks

Membranes, 2021
Phosphotungstic acid (HPW)-filled composite proton exchange membranes possess high proton conductivity under low relative humidity (RH). However, the leaching of HPW limits their wide application.
Shaojian He, Zhongrui Lu, Wenxu Dai, Kangning Yang, Yang Xue, Xiaoyang Jia, Jun Lin   +6 more
doaj   +1 more source

Crosslinked SPEEK membranes: Mechanical, thermal, and hydrothermal properties [PDF]

Journal of Materials Research, 2012
Abstract
Hou, H, Maranesi, B, Chailan, J, Khadhraoui, M, POLINI, RICCARDO, DI VONA, MARIA LUISA, Knauth, P.   +6 more
openaire   +4 more sources

Improvement of COD removal and electricity generation in a MFC through embedding sulfonated reduced graphene oxide in a SPEEK proton exchange membrane [PDF]

Journal of Applied Research in Water and Wastewater
Graphene oxide has attracted many interests in the recent decade due to its unique mechanical and chemical properties. This study focuses on the modification of graphene oxide and preparation proton exchange membrane (PEM) by sulfonated poly ether ether ...
Nasim Saniei, Nahid Ghasemi, Ali Akbar Zinatizadeh, Sirus Zinadini, Majid Ramezani   +4 more
doaj   +1 more source

Electrochemical Properties of SPEEK/Epoxy/ Graphene Oxide Composites as Proton Exchange Membrane

International Journal of Electrochemical Science, 2018
The DS 68% SPEEK composite membranes were prepared by post-sulfonation. Using diethylenetriamine as the epoxy cross-linking agent, which is uniformly distributed in the grafted SPEEK to form SPEEK/epoxy semi-interpenetrating network structure and explore
Zhengping Zhao, Chenyu Pan, Guojun Jiang, Mingqiang Zhong, Benhua Fei   +4 more
doaj   +1 more source

Composite sPEEK Membranes for Vanadium Redox Batteries Application

Procedia Engineering, 2012
Composite sPEEK membranes having different sulphonation degree were realised by using different percentages (0-20wt.%) of a functionalised silica (3-aminopropyl-functionalised silica) as a filler for vanadium redox batteries applications (VRBs). The prepared membranes were characterised in terms of Ion Exchange Capacity (IEC), vanadium up-take, proton ...
ASaccà, ACarbone, R Pedicini, I Gatto, E Passalacqua   +4 more
openaire   +5 more sources

Novel proton conducting core–shell PAMPS-PVBS@Fe2TiO5 nanoparticles as a reinforcement for SPEEK based membranes

Scientific Reports, 2021
In this study, new nanocomposite membranes from sulfonated poly (ether ether ketone) (SPEEK) and proton-conducting Fe2TiO5 nanoparticles are prepared by the solution casting method.
Parisa Salarizadeh, Mehran Javanbakht, Mohammad Bagher Askari, Khadijeh Hooshyari, Morteza Moradi, Hossein Beydaghi, Mohadese Rastgoo-Deylami, Morteza Enhessari   +7 more
doaj   +1 more source

SPEEK: effect evaluation of a Ghanaian school-based and peer-led sexual education programme [PDF]

Health Education Research, 2018
In sub-Saharan Africa, theory and evidenced-based interventions that are systematically designed and using sound evaluation methods to report on effectiveness are limited. A sex education programme called SPEEK was developed, implemented and evaluated in Ghana using the Intervention Mapping approach.
John K Krugu, Fraukje E F Mevissen, Gerard Van Breukelen, Robert A C Ruiter   +3 more
openaire   +2 more sources

Investigation of thermo-mechanical behavior, proton transfer and methanol permeation of polymer electrolyte membrane in low sulfonated state modified with thermally stable surface functionalized graphene oxide nanosheets

Polymer Testing, 2021
Sulfonated polyether ether ketone is currently under investigation to replace the expensive Nafion® as polymer electrolyte membrane. Sulfonic acid group is hydrophilic in nature and plays a key role in proton transfer in polymer electrolyte membranes ...
Sher Ayaz, Hai-Yin Yu
doaj   +1 more source

Pengaruh Metode Sulfonasi dan Penambahan Pengisi pada Membran Direct Metanol Fuel Cell

JRST: Jurnal Riset Sains dan Teknologi, 2018
Penggunaan polieter-eter keton (PEEK) sebagai membran pengganti nafion pada aplikasi direct methanol fuel cell (DMFC)  menjadi penelitian yang terus dikembangkan, Penyempurnaan  PEEK menuju karakteristik nafion juga terus dilakukan dengan berbagai metode,
Muhammad Fahmi Hakim, Tutuk Djoko Kusworo   +1 more
doaj   +1 more source