Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic

La Línea de la Concepción, Spain

Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic

La Línea de la Concepción, Spain
SEARCH FILTERS
Time filter
Source Type

Palomino P.,Complutense University of Madrid | Suarez-Guevara J.,Catalan Institute of Nanoscience and Nanotechnology | Olivares-Marin M.,Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic | Ruiz V.,Catalan Institute of Nanoscience and Nanotechnology | And 5 more authors.
Carbon | Year: 2017

In this paper, phosphomolybdic acid H3PMo12O40 (PMo12) was anchored to four synthetic micro-mesoporous carbons and a commercial one to analyse the relationship between the porous texture of the support, the PMo12 adsorption and the performance of the resulting hybrid materials as electrodes in supercapacitors. The uptake of PMo12 on carbon supports follows a clear correlation with the micropore volume, which implies that PMo12 is mainly adsorbed in microporosity as a consequence of a greater confinement in this kind of pores instead of mesopores. Transmission electron microscopy indicates that the PMo12 adsorbed is homogeneously dispersed in the carbon texture. Finally, the addition of PMo12 to the original carbon electrodes provided capacitances up to 293 F per gram of electrode, substantially larger than the 206–240 F g−1 of the unmodified activated carbon. This result represented an increase of up to 35% in terms of gravimetric energy density and 160% in terms of volumetric energy density, after PMo12 integration into the carbon matrix. © 2016 Elsevier Ltd


Aklalouch M.,Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic | Olivares-Marin M.,Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic | Lee R.-C.,National Taiwan University | Palomino P.,Complutense University of Madrid | And 2 more authors.
ChemSusChem | Year: 2015

By comparing carbon electrodes with varying porosity in Li-O2 cells, we show that the effect of electrolyte stirring at a given current density can result in a change from 2D to 3D growth of discharged deposits. The change of morphology is evident using electron microscopy and by analyzing electrode pore size distribution with respect to discharge capacity. As a consequence, carbon electrodes with different textural properties exhibit different capacity enhancements in stirred-electrolyte cells. We demonstrate that mass transport can directly control the discharge mechanism, similar to the electrolyte composition and current density, which have already been recognized as determining factors. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


PubMed | Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic and Complutense University of Madrid
Type: Journal Article | Journal: ChemSusChem | Year: 2015

By comparing carbon electrodes with varying porosity in Li-O2 cells, we show that the effect of electrolyte stirring at a given current density can result in a change from 2D to 3D growth of discharged deposits. The change of morphology is evident using electron microscopy and by analyzing electrode pore size distribution with respect to discharge capacity. As a consequence, carbon electrodes with different textural properties exhibit different capacity enhancements in stirred-electrolyte cells. We demonstrate that mass transport can directly control the discharge mechanism, similar to the electrolyte composition and current density, which have already been recognized as determining factors.


PubMed | Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic and CIBER ISCIII
Type: Journal Article | Journal: Chemical communications (Cambridge, England) | Year: 2015

We examine for the first time the ability of inert carbon free-radicals as soluble redox mediators to catalyze and enhance the oxygen reduction reaction in a (TEGDME)-based electrolyte. We demonstrate that the tris(2,4,6-trichlorophenyl)methyl (TTM) radical is capable of chemically favoring the oxygen reduction reaction improving significantly the Li-O2 battery performance.

Loading Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic collaborators
Loading Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic collaborators