热电功能砂浆的塞贝克效应及其增强
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摘要
研究了利用磁选粉煤灰烧结骨料制备的热电功能砂浆的塞贝克效应(Seebeck effect)以及金属氧化物粉末对热电功能砂浆塞贝克效应的增强效果.结果表明:热电功能砂浆具有较高的塞贝克系数和电导率,所掺入的金属氧化物粉末为热电功能砂浆体系提供了新的载流子并且提高了载流子的有效质量,其塞贝克系数较未掺金属氧化物的热电功能砂浆提高了1个数量级,较碳纤维增强水泥基材料(CFRC)提高了3个数量级;掺入金属氧化物并不会显著降低热电功能砂浆的电导率,且可获得较高的功率因数(PF);选取具有P型和N型两种半导体性质的金属氧化物热电功能砂浆串联组成1组热电转换装置,在35℃温差下可获得1.97V的开路电压.
The Seebeck effect of thermoelectric mortar made by calcined magnetically separated fly ash aggregate and the enhanced Seebeck effect of the thermoelectric mortar adding metallic oxide powders were investigated.The results show that the Seebeck coefficient and the electrical conductivity of thermoelectric mortar is quite high.A new carrier is provided and its effective mass increase by doping with metal oxide powders,also the Seebeck coefficient of thermoelectric mortar with metallic oxides increases by one order of magnitude than that without metallic oxides.Compared to carbon fiber cement-based composites(CFRC),it is also higher than that by 3 orders of magnitude,and its electrical conductivity does not change a lot.Therefore,the thermoelectric mortar with high power factor is obtained.Some P-type and N-type thermoelectric mortars are selected and arranged in series electrically and in parallel thermally as thermoelectric generator,the open circuit voltage of this thermoelectric device is 1.97 Vat 35℃temperature difference.
The Seebeck effect of thermoelectric mortar made by calcined magnetically separated fly ash aggregate and the enhanced Seebeck effect of the thermoelectric mortar adding metallic oxide powders were investigated.The results show that the Seebeck coefficient and the electrical conductivity of thermoelectric mortar is quite high.A new carrier is provided and its effective mass increase by doping with metal oxide powders,also the Seebeck coefficient of thermoelectric mortar with metallic oxides increases by one order of magnitude than that without metallic oxides.Compared to carbon fiber cement-based composites(CFRC),it is also higher than that by 3 orders of magnitude,and its electrical conductivity does not change a lot.Therefore,the thermoelectric mortar with high power factor is obtained.Some P-type and N-type thermoelectric mortars are selected and arranged in series electrically and in parallel thermally as thermoelectric generator,the open circuit voltage of this thermoelectric device is 1.97 Vat 35℃temperature difference.
引文
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[2] SUN Mingqing,LI Zuoqiu,MAO Qin,et al.Study on the hole conduction phenomenon in carbon fiber-reinforced concrete[J].Cement and Concrete Research,1998,28(4):549-554.
[3] WEN S,CHUNG D D L.Seebeck effect in carbon fiber-reinforced cement[J].Cement and Concrete Research,1999,29(12):1989-1993.
[4] WEN S,CHUNG D D L.Cement-based thermocouples[J].Cement and Concrete Research,2001,31(3):507-510.
[5] WEN S,CHUNG D D L.Enhancing the Seebeck effect in carbon fiber-reinforced cement by using intercalated carbon fibers[J].Cement and Concrete Research,2000,30(8):1295-1298.
[6] WEN S,CHUNG D D L.Seebeck effect in steel fiber reinforced cement[J].Cement and Concrete Research,2000,30(4):661-664.
[7] LIU Zhongbing,ZHANG Ling,GONG Guangcai,et al.Review of solar thermoelectric cooling technologies for use in zero energy buildings[J].Energy Build,2015,102:207-216.
[8] KIM Y W,RAMOUSSE J,FRAISSE G P,et al,Optimal sizing of a thermoelectric heat pump(THP)for heating energy-efficient buildings[J].Energy and Buildings,2014,70:106-116.
[9] WEI Jian,ZHAO Lili,ZHANG Qian,et al.Enhanced thermoelectric properties of cement-based composites with expanded graphite for climate adaptation and large-scale energy harvesting[J].Energy and Buildings,2018,159:66-74.
[10] WANG Ziyi,WANG Zhi,TANG Shengxuan,et al.Preparation and properties of electrically conductive aggregate made using magnetically separated fly ash[J].Construction and Building Materials,2017,150:547-557.
[11] WANG Ziyi,WANG Zhi,NING Mei,et al.Electro-thermal properties and Seebeck effect of conductive mortar and its use in self-heating and self-sensing system[J].Ceramics International,2017,43(12):8685-8693.
[12] HAN S,CHUNG D D L.Through-thickness thermoelectric power of a carbon fiber/epoxy composite and decoupled contributions from a lamina and an interlaminar interface[J].Carbon,2013,52:30-39.
[13] POLLOCK D D.Thermoelectricity:Theory,thermometry,tool[M].Philadelphia:ASTM International,1985:133-138.
[14]徐毓龙.氧化物与化合物半导体基础[M].西安:西安电子科技大学出版社,1991:96-98.XU Yulong.The foundations of oxide and compound semiconductor[M].Xi'an:Xidian University Press,1991:96-98.(in Chinese)
[15]黄希祜.钢铁冶金过程理论[M].北京:冶金工业出版社,1993:206-209.HUANG Xigu.Theory of steel metallurgical process[M].Beijing:Metallurgical Industry Press,1993:206-209.(in Chinese)
[16]关振铎.无机材料物理性能[M].北京:清华大学出版社,2011:233-235.GUAN Zhenduo.Physicalproperties of inorganic material[M].Beijing:Tsinghua University Press,2011:233-235.(in Chinese)
[17] GHAHARI S A,GHAFARI E,LU N.Effect of ZnO nanoparticles on thermoelectric properties of cement composite for waste heat harvesting[J].Construction and Building Materials,2017,146:755-763.
[18] WEI Jian,ZHANG Qian,ZHAO Lili,et al.Enhanced thermoelectric properties of carbon fiber reinforced cement composites[J].Ceramics International,2016,42(10):11568-11573.
[19]吴芳.碲化铋基热电材料的制备和性能的研究[D].郑州:郑州大学,2013.WU Fang.Study on the preparation and properties of Bi2Te3based thermoelectric materials[D].Zhengzhou:Zhengzhou University,2013.(in Chinese)
[20] DRESSELHAUS M S,CHEN G,TANG M Y,et al.New directions for low-dimensional thermoelectric materials[J].Advanced Materials,2007,38(26):1043-1053.
[21] ROGL G,GRYTSIV A,YUBUTA K,et al.In-doped multifilled N-type skutterudites with ZT=1.8[J].Acta Materialia,2015,95:201-211.
[22] DEMIREL S,AKSAN M A,ALTIN S.Low temperature electrical and thermal transport properties of the Ca3-xSbxCo4O9,system[J].Journal of Materials Science Materials in Electronics,2012,23(12):2251-2256.
[23] ZHU Beibei,ZHANG Tianshu,TIAN Ruoming,et al.Enhancement of thermoelectric properties in Sn doped(In0.95Lu0.05)2O3[J].Journal of Alloys&Compounds,2015,644(7):119-123.
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