TITLE

Ca2.7Bi0.3Co4O9/La0.9Bi0.1NiO3 thermoelectric devices with high output power density

AUTHOR(S)
Funahashi, R.; Urata, S.; Mizuno, K.; Kouuchi, T.; Mikami, M.
PUB. DATE
August 2004
SOURCE
Applied Physics Letters;8/9/2004, Vol. 85 Issue 6, p1036
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Different versions of a thermoelectric unicouple composed of p-type Ca2.7Bi0.3Co4O9 (Co-349) and n-type La0.9Bi0.1NiO3 (Ni-113) bulks were constructed using Ag paste containing p- and n-type oxide powders, prepared from the same bulks, for connection of the p and n legs, respectively. Internal resistance (RI) of the unicouple corrected using Ag paste containing 6 wt. % of the oxide powders is 26.2 mΩ at 1073 K in air and decreases with increasing temperature. Maximum output power (Pmax), evaluated using the formula Pmax=VO2/4RI, (VO is open-circuit voltage), is 94 mW at 1073 K (ΔT=500 K) and increases with temperature. This value corresponds to a volume power density of 0.66 W/cm3.
ACCESSION #
14019753

 

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