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Overview of thermoelectric sodium cobaltite: [Na.sub.x][Co.sub.2][O.sub.4].(ARTICLE TYPE)

Journal of the South Carolina Academy of Science

| September 22, 2008 | Tang, Xiaofeng; Tritt, Terry M. | COPYRIGHT 2008 South Carolina Academy of Science. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

1. Introduction

Thermoelectric (TE) technology for energy conversion between heat and electricity via Seebeck and Peltier effects provides a viable method for solid state cooling and remote power supply. In view of global environmental and energy problems, TE is becoming an increasing important field for power generation utilizing vast amount of waste heat emitted from various industrial factories, automobiles and homes. The performance of TE materials is generally evaluated by the dimensionless figure-of-merit which is defined as ZT=[s.sup.2]T / [rho]([[kappa].sub.L] + [[kappa].sub.e]), here s is the Seebeck coefficient (also called thermopower), [rho] is the ...

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