Thermoelectric Power of Carbon Fiber Reinforced Cement Composites Enhanced by Ca₃Co₄O₉

Abstract:

Micro-sized Ca₃Co₄O₉ powder was prepared by solid phase method at 850-950°C in air atmosphere. Seebeck effect of carbon fiber reinforced cement composites was enhanced efficiently by combining the Ca₃Co₄O₉ powder of 3.0wt.% by mass of cement. The absolute thermoelectric power achieves 1.65 fold increase and is up to 58.6μV/°C at room temperature. The lower activation energy of holes carriers and higher carrier concentration by doping Ca₃Co₄O₉, are probably attributed to the increase of absolute thermoelectric power.

• Periodical: Applied Mechanics and Materials (Volume 320)
• Pages: 354-357
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.320.354
• Online since: May 2013
• Authors: Jian Wei, Lei Hao, Ge Ping He, Chun Li Yang
• Keywords: Ca₃Co₄O₉, Carbon Fiber (CF), Composite, Seebeck Effect

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