Batteries: thermoelectric and photoelectric – Thermoelectric – Having particular thermoelectric composition
Reexamination Certificate
2008-04-29
2008-04-29
Nguyen, Nam (Department: 1795)
Batteries: thermoelectric and photoelectric
Thermoelectric
Having particular thermoelectric composition
C136S239000, C136S201000, C252S06230T, C977S779000, C977S948000
Reexamination Certificate
active
07365265
ABSTRACT:
A thermoelectric material having enhanced Seebeck coefficient is characterized by a microstructure comprising nanoscale Pb inclusions dispersed in matrix substantially composed of PbTe. The excess Pb is obtained either by adding Pb in an amount greater than the stoichiometric amount needed to form PbTe, or by adding an additive effective to getter Te so as to produce the desired excess. The method is generally applicable to enhance thermoelectric properties of compounds of Pb, Sn or Ge, and Te, Se, or S.
REFERENCES:
patent: 3285019 (1966-11-01), Henderson et al.
patent: 6444896 (2002-09-01), Harman et al.
patent: 2002/0026856 (2002-03-01), Suzuki et al.
D. B. Evans et al, “An Electron Microprobe Study of Inclusions in Lead Telluride Thermoelectric Elements”, NASA TN D-5415, Nov. 1969.
Heremans Joseph Pierre
Morelli Donald T.
Thrush Christopher M.
Barton Jeffrey
Delphi Technologies Inc.
Griffin Patrick M.
Nguyen Nam
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