TY - GEN
T1 - Solid-state synthesis and some properties of magnesium-doped copper aluminum oxides
AU - Liu, Chang
AU - Ren, Fei
AU - Wang, Hsin
AU - Case, Eldon
AU - Morelli, Donald
PY - 2010
Y1 - 2010
N2 - Copper aluminum oxide (CuAlO2) with delafossite structure is a promising candidate for high temperature thermoelectric applications because of its modest band gap, high stability and low cost. We investigate magnesium doping on the aluminum site as a means of producing higher electrical conductivity and optimized Seebeck coefficient. Powder samples were synthesized using solid-state reaction and bulk samples were prepared using both cold-pressing and hot-pressing techniques. Composition analysis, microstructural examination and transport property measurements were performed, and the results suggest that while hot-pressing can achieve high density samples, secondary phases tend to form and lower the performance of the materials.
AB - Copper aluminum oxide (CuAlO2) with delafossite structure is a promising candidate for high temperature thermoelectric applications because of its modest band gap, high stability and low cost. We investigate magnesium doping on the aluminum site as a means of producing higher electrical conductivity and optimized Seebeck coefficient. Powder samples were synthesized using solid-state reaction and bulk samples were prepared using both cold-pressing and hot-pressing techniques. Composition analysis, microstructural examination and transport property measurements were performed, and the results suggest that while hot-pressing can achieve high density samples, secondary phases tend to form and lower the performance of the materials.
UR - http://www.scopus.com/inward/record.url?scp=79952058097&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79952058097
SN - 9781617822063
T3 - Materials Research Society Symposium Proceedings
SP - 106
EP - 111
BT - Energy Harvesting - From Fundamentals to Devices
T2 - 2009 MRS Fall Meeting
Y2 - 30 November 2009 through 4 December 2009
ER -