Results 71 to 80 of about 6,156 (199)
Nanomaterials, 2019 The understanding of the relationship between the chemical structure and the hydrophilic structure is crucial for the designing of high-performance PEMs.
Rujie Wang +4 more
doaj +1 more source
Preparation of high performance SPEEK/Cloisite 15A nanocomposite membrane via advanced membrane formulation method [PDF]
, 2014 Sulfonated poly (ether ether ketone) (SPEEK)/Cloisite 15A® nanocomposite membranes were prepared via solution intercalation method. For better dispersion of nanoclay in the polymer matrix, the solution intercalation method was modified and a ...
Ismail, Ahmad F. +6 more
core +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 +3 more
openaire +2 more sources
Proton Selective Nanoporous Atomically Thin Graphene Membranes for Vanadium Redox Flow Batteries
Advanced Materials, Volume 38, Issue 5, 22 January 2026.A scalable high‐performance proton‐exchange‐membrane architecture is demonstrated that integrates monolayer CVD graphene with Ar plasma‐engineered Angstrom‐scale proton‐selective pores, stacked to mitigate non‐selective defects, and interfaced with an ultrathin (≈300 nm) polybenzimidazole layer sandwiched between two Nafion 211 sheets.
Pavan Chaturvedi +7 more
wiley +1 more source
Advanced Materials, Volume 38, Issue 5, 22 January 2026.This review systematically examines recent advances in non‐aqueous electrolytes for rechargeable magnesium batteries, focusing on chlorine‐containing and chlorine‐free systems. It highlights the interdependent relationship between electrolyte compositions, atomistic structures, and electrochemical performance.
Hao Xu +10 more
wiley +1 more source
Preparation and Characterization of UV Irradiated SPEEK/Chitosan Membranes
International Journal of Electrochemical Science, 2012 Cross-linked composite membranes of sulfonated poly(ether ether ketone) (SPEEK) with a chitosan content up to 50 wt%, were prepared by solution cast technique and ultraviolet (UV) curing.
N.A. Aini +5 more
doaj +1 more source
ChemElectroChem, Volume 13, Issue 1, January 2026.A novel vanadium–titanium redox flow battery is demonstrated using V5+/V4+ and Ti3+/Ti4+ electrolytes, delivering stable cycling (>150 cycles), high coulombic efficiency (>95%), and low‐cost operation. Ionic‐liquid‐based catholytes and SPEEK membranes further enhance sustainability while maintaining an appreciable electrochemical performance.
Kalyan Sundar Krishna Chivukula +1 more
wiley +1 more source
High durable SPEEK/TiO2 nanopaper composite membrane for vanadium redox flow battery
Journal of Saudi Chemical SocietySulfonated poly (ether ether ketone) (SPEEK) ion exchange membranes for VRFB are promising alternatives to Nafion, but require improved mechanical and chemical stability for long-term operation. Here, we have fabricated composite membranes using SPEEK as
Song Il Han +4 more
doaj +1 more source
Obtenção e caracterização de membranas híbridas Speek/silano para utilização em células a Combustível [PDF]
, 2005 TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.A célula a combustível é um dispositivo que converte energia química proveniente da oxidação do combustível em energia elétrica gerando ...
CONCEIÇÃO, Thiago Ferreira da
core
Effects of tin phosphate nanosheet addition on proton-conducting properties of sulfonated poly(ether sulfone) membranes [PDF]
, 2012 Organic/inorganic composite membranes were prepared by dispersing nanosheets of layered tin phosphate hydrate [Sn(HPO4)2·nH2O (SnP)] in sulfonated poly(ether sulfone) (SPES) at SnP contents of 0–40 vol.%.
LICOCCIA, S +4 more
core +1 more source