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| 1 | High-thermoelectric performance of TiO_(2-x)fabricated under high pressure at high temperatures显示文摘We present the work about the initiative fabrication of multi-scale hierarchical TiO2-x by our strategy,combining high pressure and high temperature(HPHT)reactive sintering with appropriate ratio of coarse Ti to nanosized TiO_(2).Ubiquitous lattice defects engineering has also been achieved in our samples by HPHT.The thermoelectric performance was significantly enhanced,and rather low thermal conductivity(1.60 W m^(-1)K^(-1))for titanium oxide was reported here for TiO1.76.Correspondingly,a high dimensionless figure of merit(zT)up to 0.33 at 700℃was realized in it.As far as we know,this value is an enhancement of 43%of the ever best result about nonstoichiometric TiO_(2)and the result is also exciting for oxide thermoelectric materials.The moderate power factor,the significantly reduced thermal conductivity and the remarkable synergy between electrical properties and thermal conductivity are responsible for the excellent thermoelectric performance.We develop a facile strategy for preparing multi-scale hierarchical TiO_(2-x)and its superior ability to optimize thermoelectric performance has been demonstrated here. | Haiqiang Liu Hongan Ma Taichao Su Yuewen Zhang Bing Sun Binwu Liu Lingjiao Kong Baomin Liu Xiaopeng Jia | 2017 | Journal of Materiomics2017，3，4： | 1 |
| 2 | Structure,magnetism and magnetic thermal properties of heavy rare earth Tb1-xTmxFeO3(x=0.00,0.15,0.25) polycrystalline samples显示文摘Tb1-xTmxFeO3(x = 0.00,0.15,0.25) polycrystalline series were synthesized using a solid-state reaction.Our results show that all three prepared samples are in a distorted orthogonal structure and their space group is pbnm.When the Tm3+doping amount increases,the characteristics of the spin-flip of the sample decreases following an initial increase at the beginning;the antiferromagnetic property almost reaches zero;the magnetization decreases at the beginning but increases later on.The maximum magnetic entropy change and magnetic refrigeration effect RCP are reduced at varying degrees.Under a 7 T magnetic field,the maximum magnetic entropy change,△Smax,for the three samples of Tb1-xTmxFeO3 with x=0.00,0.15,0.25 is 13.78,-9.28,and 10.69 J/(K·kg),respectively;the magnetic refrigeration capacity(RCP) is 316.85,175.2,and 297.60 J/kg,respectively.In summary,doping with the element Tm reduces △Smax and RCP of the sample.Since the maximum magnetic entropy change and the cooling capacity for the three samples are relatively large,they can be used as an alternative for magnetic refrigerants. | Xiang Jin Jianjun Zhao Hongwei Chen Fengze Cao Li Cheng Taichao Su Wenxing Wang Jia Liu Yi Lu | 2020 | Journal of Rare Earths2020，38，6： | 1 |
| 3 | High-temperature thermoelectric properties of AgPb18SbTe20 prepared by high pressure显示文摘 | Hongtao Li Taichao Su Yiwen Wu Yi Hua Hui Zhou Zhixiu Zhu Chen Li Chengchang Ji Shengqiang Bai Ting Wu | 2012 | High Pressure Research2012，，2： | 1 |
| 4 | Electrical transport and thermoelectric properties of PbTe doped with SbzTea pre- pared by high-pressure and high-temperature显示文摘 | Su Taichao Zhu Pinwen Ma Hongan | 2006 | Alloys Comp2006，422，： | 1 |
| 5 | Thermoelec tric properties of nonsloichiometric PbTe prepared byHPHT显示文摘 | Su Taichao Jia Xiaopeng Ma t tongan | 2009 | J Alloys Compd2009，468，12： | 1 |
| 6 | 显示文摘 | TAIChao(部超) ZOUHong(部洪) GUXue-xin(谷学新) GUOQi-hua(郭启华) | | 分析化学0，，： | 1 |
| 7 | Theoretical Insight into the Effect of Steam Temperature on Heavy Oil/Steam Interface Behaviors Using Molecular Dynamics Simulation显示文摘The interfacial behavior between heavy oil and steam is one of the vital pointers affecting the development efficiency of steam injection for heavy oil recovery.However,the underlying mechanisms of the interaction between heavy oil and steam at high temperature and pressure remain elusive.Herein,we have investigated the molecular-scale interactions on the interface between heavy oil droplet and steam phase at high temperatures(473 K,498 K,523 K,and 548 K)via molecular dynamics simulations.The results show that the interfacial thickness between heavy oil droplet and steam phase increases gradually with temperature,while the interfacial tension decreases constantly.Moreover,high temperature can damage hydrogen bonds,resulting in lower interaction energy between heavy oil droplet and steam phase.The radial distribution function results demonstrate that the interaction between heavy oil fractions and steam phase can be weakened by high temperature.Furthermore,the evolutions of interface are directly observed by the two-dimension density cloud maps at different temperatures,and the mean square displacement and self-diffusion coefficient demonstrate the evolution mechanism of heavy oil fractions and steam.In particular,the heavy oil/steam systems with asphaltenes at the interface are more likely to achieve high diffusivity and emulsifying capacity.This work provides a molecular-level insight for understanding the interfacial interaction mechanisms of heavy oil/steam systems during a steam injection process. | YANG Renfeng CHEN Dongsheng ZHENG Wei MIAO Tingting LIU Fan WANG Taichao CHEN Hengyuan CHENG Tong | 2023 | Journal of Thermal Science2023，32，6： | 0 |
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