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首页> 外文期刊>Inorganic materials >Effect of Copper Additions on the Thermoelectric Properties of a Layered Calcium Cobaltite Prepared by Hot Pressing
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Effect of Copper Additions on the Thermoelectric Properties of a Layered Calcium Cobaltite Prepared by Hot Pressing

机译：铜添加对热压制备的层状钙钴罐热电性能的影响

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摘要

Low-porosity layered calcium cobaltite-based ceramics with copper additions have been prepared by hot pressing and their microstructure and electrical transport and thermoelectric properties have been studied. The results demonstrate that the addition of copper particles to the ceramics reduces the average particle size of the Ca3Co4O9 + delta phase and the thermoelectric power and porosity of the samples and increases the electrical conductivity and thermoelectric power factor (P) of the ceramics. The highest thermoelectric power factor is offered by the hot-pressed ceramic with the composition Ca3Co4O9 + delta + 2 wt % Cu (P-1100 = 521 mu W/(m K-2)), which is a factor of 1.4 higher than that of the basic material Ca3Co4O9 + delta having the same thermal history (P-1100 = 363 mu W/(m K-2)) and more than five times the thermoelectric power factor of low-density Ca3Co4O9 + delta ceramics prepared by conventional solid-state reactions.
机译：通过热压制备具有铜添加的低孔隙率分层钴沸石的陶瓷，并且已经研究了它们的微观结构和电气传输和热电性能。结果表明，向陶瓷添加铜颗粒降低了Ca3CO4O9 +δ相的平均粒径和样品的热电动力和孔隙率，并增加了陶瓷的电导率和热电功率因数（P）。用组合物Ca 3CO 4O9 +δ+ 2wt％Cu（p-1100 =521μm/（m k-2））的热压陶瓷提供最高的热电功率因数，这是1.4的倍数具有相同热历史的CA3CO4O9 +三角洲（P-1100 =363μW/（m k-2））和通过常规固体制备的低密度Ca3CO4O9 + Delta陶瓷的热电功率因数的大于五倍以上的五倍以上 - 国家反应。

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