High-temperature thermoelectric properties of layered BaxCoO2. (15th April 2015)

• Record Type: Journal Article
• Authors: Liu, Jinfeng; Huang, Xiangyang; Yang, Danfeng; Wan, Shun; Xu, Guisheng
• Is Part Of: Scripta materialia. Volume 100(2015)
• Page Start: 63
• Page End: 65
• Publication Date: 2015-04-15
• Subjects: Thermoelectric material -- Layered structure -- Ion exchange -- Cobaltite; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2014.12.014
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : Polycrystalline samples of Ba x CoO2 ( x = 0.19, 0.28, 0.30, 0.33) were prepared by an ion-exchange technique. The high-temperature thermoelectric properties were measured for the first time. The electrical and thermal conductivity of Ba x CoO2 decrease with decreasing the barium content from 0.33 to 0.19, while the Seebeck coefficient is not sensitive to the barium content. The maximum ZT value is 0.21 for Ba0.19 CoO2 at 800 K. The results suggest that Ba x CoO2 might be another possible candidate for thermoelectric oxide materials.