Results 51 to 60 of about 6,156 (199)

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

Vertebral Endplate Concavity in Lateral Lumbar Interbody Fusion: Tapered 3D-Printed Porous Titanium Cage versus Squared PEEK Cage

Medicina, 2023
Background and Objectives: To prevent postoperative problems in extreme lateral interbody fusion (XLIF), it is critical that the vertebral endplate not be injured. Unintentional endplate injuries may depend on the cage.
Naoki Segi, Hiroaki Nakashima, Ryuichi Shinjo, Yujiro Kagami, Masaaki Machino, Sadayuki Ito, Jun Ouchida, Kazuaki Morishita, Ryotaro Oishi, Ippei Yamauchi, Shiro Imagama   +10 more
doaj   +1 more source

Ion‐Regulating SPEEK–BNNS Hybrid Interfaces Enabling Low‐Barrier Zn‐Ion Transport and Dendrite‐Free Zinc Anodes

Small, EarlyView.
A scalable organic–inorganic hybrid protective layer composed of sulfonated poly(ether ether ketone) and boron nitride nanosheets is introduced to stabilize Zn‐metal anodes. The hybrid architecture regulates Zn2+ transport, suppresses dendrite growth, and mitigates parasitic reactions, enabling uniform Zn deposition and long‐term stable cycling in ...
Minseo Kim, Hyunki Kim, Seojin Woo, Ingyu Choi, Seulgi Kim, Han Seul Kim, Dongju Lee   +6 more
wiley   +1 more source

Molecular Design and Redox Chemistries for Aqueous Organic Redox Flow Batteries (AORFBs)

Angewandte Chemie, Volume 137, Issue 51, December 15, 2025.
Aqueous organic redox flow batteries (AORFBs) are a promising frontier for sustainable long‐duration energy storage. This review highlights recent advances in redox‐active molecule design, structure‐property relationships, and degradation mechanisms, alongside pairing strategies and full‐cell engineering.
Pan Wang
wiley   +2 more sources

Simple, inexpensive and RNase-free purification of plasmid DNA by fractional precipitation with isopropanol

BioTechniques, 2021
We present a modified alkaline lysis method for purification of plasmid DNA (pDNA) from bacterial extract using fractional precipitation with isopropanol (FPI).
Viiu Paalme, Mart Speek
doaj   +1 more source

Porous Titanium surfaces to control bacteria growth: mechanical properties and sulfonated polyetheretherketone coating as antibiofounling approaches [PDF]

, 2019
Here, titanium porous substrates were fabricated by a space holder technique. The relationship between microstructural characteristics (pore equivalent diameter, mean free-path between pores, roughness and contact surface), mechanical properties (Young’s
Beltrán, Ana M., Civantos, Ana, Domínguez-Trujillo, Cristina, García-Moreno, Francisco, Kamm, Paul H., Mesa Restrepo, Andrea, Moriche Tirado, Rocío, Rodríguez-Ortiz, José Antonio, Torres Hernández, Yadir, Webster, Thomas J.   +9 more
core  

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

Rational Design of Lithium Sulphonamide Polymeric Cation Exchange Membranes for LiOH Production by Electro‐Electrodialysis

Advanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.
Here the authors present the development of novel and inexpensive membranes for Li salt electro‐electrodialysis based on sulphonamide‐based polyelectrolyte for LiOH production by electrodialysis. The membranes are self‐standing Li‐selective and low‐fluorine content in comparison with state‐of‐the art benchmark (Nafion 117 membrane).
Marco Amores, Antonela Gallastegui, Elena Gabirondo, Luke A. O’Dell, Kwang Loon Ang, Aleksandar N. Nikoloski, David Mecerreyes, Robert Kerr, Cristina Pozo‐Gonzalo   +8 more
wiley   +1 more source

Development of Cost-Effective sPEEK/Al2O3 Composite Membranes with Enhanced Proton Conductivity and Durability for PEMFCs [PDF]

E3S Web of Conferences
Polymer electrolyte membrane (PEM)-based fuel cells are emerging fields with high efficiency, low pollutant emissions, and low material consumption. However, conventional membranes have poor thermal resistance and are expensive.
Hakim Muhammad Fahmi, Hidayati Nur, Hasannah Cintiya Septa, Widianto Eri, Fauji Najmudin   +4 more
doaj   +1 more source

Electrochemical Detection of Dopamine at Fe₃O₄/SPEEK Modified Electrode

Molecules, 2021
Reported here is the design of an electrochemical sensor for dopamine (DA) based on a screen print carbon electrode modified with a sulphonated polyether ether ketone-iron (III) oxide composite (SPCE-Fe3O4/SPEEK). L.
Mogomotsi N. Ranku, Gloria E. Uwaya, Omolola E. Fayemi   +2 more
doaj   +1 more source