Results 61 to 70 of about 186,975 (318)
Nano-Micro LettersHighlights A dual-function stabilizing agent in NiFe-based anodes is proposed. Ru incorporation promotes the formation of a protective surface layer enriched with Ru atoms, along with a denser NiFeOOH catalyst structure.
Jin He +6 more
doaj +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 +3 more
core
Experimental validation of equilibria in fuel cells with dead-ended anodes [PDF]
, 2013 This paper investigates the nitrogen blanketing front during the dead-ended anode (DEA) operation of a PEM fuel cell. Surprisingly the dynamic evolution of nitrogen and water accumulation in the dead-ended anode (DEA) of a PEM fuel cell arrives to a ...
Anna G. Stefanopoulou +9 more
core +1 more source
Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework
Advanced Functional Materials, EarlyView.The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu +13 more
wiley +1 more source
Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina
Advanced Functional Materials, EarlyView.Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand +5 more
wiley +1 more source
Supercapacitive microbial fuel cells
, 2023 The integration of supercapacitive features in microbial fuel cells (MFC) can solve one of the major limitations of this technology, i.e., the low power output.
Santoro, Carlo +2 more
core +1 more source
Advanced Functional Materials, EarlyView.Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum +5 more
wiley +1 more source
Oxygen redox chemistry: A new approach to high energy density world
Next MaterialsSodium-ion batteries (SIBs) have been considered as promising candidates for large scale energy storage systems due to the great abundance of sodium resources.
Xinyin Cai +5 more
doaj +1 more source
Effect of trifluoromethanesulfonic acid on the ORR activity of Pt in acid medium
International Journal of Electrochemical Science, 2019 In this paper, to study the effect of sulfonic groups on the ORR activity of Pt and exclude the effect of polytetrafluoroethylene (PTFE) backbone of Nafion, trifluoromethanesulfonic acid (CF3SO3H) was used to simulate the SO3H-terminated side chains of ...
Ruyi Wang +6 more
doaj +1 more source
Beilstein Journal of Nanotechnology, 2014 The advantages of liquid fuel cells (LFCs) over conventional hydrogen–oxygen fuel cells include a higher theoretical energy density and efficiency, a more convenient handling of the streams, and enhanced safety. This review focuses on the use of different types of organic fuels as an anode material for LFCs.
openaire +3 more sources