| Autor: |
Hayati-Roodbari, N., Berger, R. J. F., Bernardi, J., Kinge, S., Hüsing, N., Elsaesser, M. S. |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| DOI: |
10.1007/s10971-018-4778-8 |
| Popis: |
Mg2Si is apart from its conductivity properties expected to be a promising candidate for thermoelectric applications due to its low toxicity, low costs, and the high abundance of its precursor chemicals. Through the addition of a homogeneous distribution of nanoparticles (e.g. MgO) and by reducing the size of Mg2Si to the nanometer regime, it is possible to decrease the thermal conductivity by increasing phonon-interface scattering and, as a result, improve the thermoelectric properties. However, classical approaches do not allow for the synthesis of nanocomposites from Mg2Si and MgO. In this work, a straightforward route is presented towards homogeneously mixed Mg2Si/MgO via a two-step magnesiothermic reduction process starting from solgel derived hierarchically organized porous silica. Monolithic materials composed of Mg2Si and MgO in variable molar ratios are built up from a macroporous network of Mg2Si with homogeneously distributed MgO particles exhibiting a crystallite size in the range of 2437nm. (VLID)2864594 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
