High Temperature Thermoelectric Oxides Engineered At Multiple Length Scales For Energy Harvesting

Technical Report · Sat Dec 20 00:00:00 EST 2014

DOI:https://doi.org/10.2172/1182544· OSTI ID:1182544

Ohuchi, Fumio ^[1]; Bordia, Rajendra ^[2]

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1. Univ. of Washington, Seattle, WA (United States)
2. Clemson Univ., SC (United States)

Thermoelectric aspects of the processing parameters the n-type relaxors, including Sr_xBa_1-xNb₂O₆ (SBN100x), Sr₂Nb₂O₇ (SN) and SrBi₂Nb₂O₉ (SBiN), were investigated. A solution combustion synthesis (SCS) route was devised to fabricate SBN, SN and SBiN nanoparticles with excellent phase purity. X-ray photoelectron spectroscopy (XPS) was used to deduce the local cation site occupancy, and detailed thermoelectric transport processes were investigated. Based on the identified behavior, effectiveness of pore formers on the thermoelectric performance was investigated with the goal of decreasing κ through enhanced phonon scattering while preserving the electron transport characteristics.

• Research Organization: Univ. of Washington, Seattle, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FE0007272
• OSTI ID: 1182544
• Country of Publication: United States
• Language: English