Publicaties
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Bacteria based concrete Universiteit Gent
Self-healing concrete with encapsulated polyurethane Universiteit Gent
Design of new electrode materials for Li-ion and Na-ion batteries from the bloedite mineral $Na_{2}Mg(SO_{4})_{2}\cdot4H_{2}O$ Universiteit Antwerpen
Mineralogy offers a large database to search for Li- or Na-based compounds having suitable structural features for acting as electrode materials, LiFePO4 being one example. Here we further explore this avenue and report on the electrochemical properties of the bloedite type compounds Na2M(SO4)(2)center dot 4H(2)O (M = Mg, Fe, Co, Ni, Zn) and their dehydrated phases Na2M(SO4)(2) (M = Fe, Co), whose structures have been solved via complementary ...
High performance thermal insulators KU Leuven
High performance thermal insulation materials for buildings KU Leuven
Recent developments in high performance thermal insulators based on nanotechnology have enabled a strong drop in the effective thermal conductivity of insulation materials, down to 0.004-0.014. W/(mK). The reductions are achieved using the Knudsen effect, which describes the effect of pore size distributions and partial gas pressure in materials on the gaseous heat transfer. The resulting thermal insulation materials have specific properties of ...
Understanding and promoting the rapid preparation of the triplite-phase of $LiFeSO_{4}F$ for use as a large-potential Fe cathode Universiteit Antwerpen
The development of new electrode materials, which are composed of Earth-abundant elements and that can be made via eco-efficient processes, is becoming absolutely necessary for reasons of sustainable production. The 3.9 V triplite-phase of LiFeSO4F, compared to the 3.6 V tavorite-phase, could satisfy this requirement provided the currently complex synthetic pathway can be simplified. Here, we present our work aiming at better understanding the ...
Electro- and magneto-transport properties of amorphous carbon films doped with iron KU Leuven
Electro- and magneto-transport properties of amorphous carbon films doped with iron element have been systematically studied. The electro-transport mechanism of the films is dominated by thermal activation at T > 200 K, Mott-type variable range hopping (VRH) at 200 K > T > 60 K and Efros-Shklovskii type (ES-) VRH at T < 60 K. An anomalous giant positive magnetoresistance (MR) 6.40% is found at the ES-VRH range, which is attributed to ...