Advanced Metal Oxides and Nitrides Thermoelectric Materials for Energy Harvesting

Abstract

View Article Online Metal oxides and nitrides are widely used in many applications as a result of their high mechanical, chemical, and electrical properties. In high temperature thermoelectric applications, oxides and nitrides exhibit high thermopower and thermal stability. Moreover, most oxides and nitrides are consisted of earth abundant elements, which are non-toxic, cost effective and easy for large-scale synthesis. In this article, we reviewed the recent advances of metal oxides and nitrides and their applications in thermoelectrics. The materials that are examined include both p-type semiconductors (e.g. Na CoO , Ca Co O , GaN) and n-type semiconductors (e.g. ZnO-based, SrTiO , InGaN, InN). x 2 3 4 9 3 This study is focused on the temperature dependent thermoelectric transport properties of oxides and nitrides aiming for reaching a high power factor.

Metastable Ta2N3 with highly tunable electrical conductivity via oxygen incorporation

“…Metal nitrides offer intriguing prospects for a variety of applications, including solid-state lighting, 1 integrated circuits, 2 thermoelectrics, 3 superconductors, 4 and photocatalysis. 5–7 The moderate electronegativity of nitrogen ( χ N = 3.04), compared to oxygen ( χ O = 3.44), results in a mixed ionic/covalent bonding character in these compounds.…”

Facile Fabrication Hierarchical Pore Structure Li1.2Mn0.54Ni0.13Co0.13-xSrxO2 Nanofiber for High-Performance Cathode Materials

“…The relatively low initial coulombic efficiency for the Sr doped cathode materials is ascribed to that the discharge capacity decreases with an increase in the Sr amount in these Li-rich cathodes whereas the charging capacity only slightly changes. According to previous studies, the decrease in the discharge capacity is possible related to that the substitution of a certain percentage of Co by Sr, which [38][39][40] reduces the amount of Co redox species in the active mass. As can be seen from the comparison of the selected voltage curves of all electrodes, the discharge specific capacity of the sample is becomes more and more concentrated as the amount of the Sr increases, indicating that the effect of Sr doping on stabilization materials is valid.…”

Preparation and Mechanical Properties of Copper Matrix Composites Reinforced by Carbon Nanotubes and Al2O3

“…[ 16–18 ] Some studies have shown that many metal oxides such as ZnO, [ 19–22 ] CuO, [ 23 ] NiO, [ 24 ] Fe 2 O 3 , [ 25 ] ZrO 2 [ 26 ] are widely used in various fields as a result of their unique properties. [ 27–31 ] Among them, Al 2 O 3 ceramic particles can effectively improve the strength of copper matrix composites due to their high hardness and wear resistance. So, Al 2 O 3 particles are also a good reinforcing phase of the copper matrix.…”