Results 51 to 60 of about 5,091 (223)
Multidoping of spinel LiMn2O4 with Cr, Fe, and Ti effectively suppresses Jahn–Teller distortion, enhancing structural stability and cycling performance in Li‐ion batteries. Operando X‐ray absorption spectroscopy and ex situ X‐ray diffraction confirm a stable spinel framework and indicate Mn as the only electrochemically active element.
Daniele Callegari +8 more
wiley +1 more source
Results on the synthesis process of nanometric ceramic powders of the SrxBa1-xNb2O6 compound (SBN) for two values of x (0.33 and 0.50), and two synthesis methods (Pechini and controlled coprecipitation) are presented.
Gaona J, S. +4 more
doaj +1 more source
Advances in catalysis for fuel cells [PDF]
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Hayes, Patrick, Hayes, Patrick
core
Nanosized LaCo0.6Fe0.4O3 perovskites synthesized by citrate sol gel auto combustion method [PDF]
LaCo0.6 Fe0.4 O3 (LCFO) nanopowder was synthesized from constituent metal nitrates, citric acid and ethylene glycol by citrate sol gel autocombustion method and calcined at different temperatures. The powders were characterized by X-ray diffraction (XRD),
George Varghese +2 more
core +1 more source
In this research we demonstrated that the energy density of supercapacitors can be enhanced at about 50% by generating extra charge through the use of a photosensitive cell coupled to the supercapacitor estructure. ABSTRACT This research reports a supercapacitor (SC) made with a photosensitive electrode (composed of LaFe0.94V0.01Mn0.05O3 (V‐LFO ...
Luis Ojeda +7 more
wiley +1 more source
Defect chemistry and transport properties of BaxCe0.85M0.15O3-d [PDF]
The site-incorporation mechanism of M3+ dopants into A2+B4+O3 perovskites controls the overall defect chemistry and thus their transport properties. For charge-balance reasons, incorporation onto the A2+-site would require the creation of negatively ...
Espinosa, W. T. P. +3 more
core
Perovskite type nanopowders and thin films obtained by chemical methods [PDF]
The review presents the contribution of the authors, to the preparation of two types of perovskites, namely BiFeO3 and LaCoO3, by innovative methods. The studied perovskites were obtained as powders, films and sintered bodies.
Barbara Malic +9 more
core +1 more source
Nanostructuring Copper Tungstate Photoanodes: Performance Enhancement and Fundamental Limitations
Nanostructuring of CuWO4 photoanodes yields a ~ tenfold photocurrent enhancement compared to dense films, reaching 0.6 mA cm−2 at 1.23 V versus reversible hydrogen electrode, among the best values reported for this material. Yet, performance remains far below the theoretical limit due to severe bulk recombination and poor electron transport ...
Oliver Mendoza Reyes +3 more
wiley +1 more source
Abstract This article reports on the development of a spark plasma sintering (SPS)‐assisted sol‐gel method for the synthesis of dense pellets, belonging to the series of InGaO3(ZnO)m homologous phases, where m is an integer. We show that using this synthesis route, the sintering temperature is significantly decreased down to 950–1000°C as compared to ...
Sébastien Préaud +4 more
wiley +1 more source
ZrTiO4 Nanowire Growth Using Membrane-assisted Pechini Route
The high surface-to-volume ratio of nanowires makes them natural competitors as newer device components. In this regard, a current major challenge is to produce quasi-one-dimensional nanostructures composed of well-established oxide-based materials. This
Poty Rodrigues de Lucena +3 more
doaj +3 more sources

