title: Giant Seebeck coefficient thermoelectric device of MnO2 powder.
abstract: We report a giant Seebeck coefficient (S) thermoelectric (TE) material-MnO(2) powder-and the design of a practical MnO(2) TE generator to light up a regular light emitting diode (LED). The S of MnO(2) powder was measured to be higher than 20,000 μV K(-1), which is about 100 times higher than the state-of-the-art of Bi(2)Te(3), one of the best TE materials. The giant S is very possibly closely related to the surface density of the electronic state (DOS), the Fermi energy level. The very high S and therefore high power factor is technologically important for transient TE cooling.
authors.affiliation: Department of Chemistry, Renmin University of China, Beijing, People's Republic of China.
authors.forename: FangFang
authors.initials: F
authors.lastname: Song
authors.forename: Liming
authors.initials: L
authors.lastname: Wu
authors.forename: S
authors.initials: S
authors.lastname: Liang
mesh_terms: D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006361:Heating / Q000295:instrumentation*; D008029:Lighting / Q000295:instrumentation*; D017895:Manganese Compounds / Q000737:chemistry*; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000295:instrumentation; D010087:Oxides / Q000737:chemistry*; D014159:Transducers
chemical_list: D017895:Manganese Compounds; D010087:Oxides; C027424:manganese oxide