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| 1 | Preparation of multi-walled carbon nanotube-reinforced TiNi matrix composites from elemental powders by spark plasma sintering显示文摘Carbon nanotube (CNT)-reinforced TiNi matrix composites were synthesized by spark plasma sintering (SPS) employing elemental powders.The phase structure,morphology and transformation behaviors were studied.It was found that thermoelastic martensitic transformation be-haviors could be observed from the samples sintered above 800 ℃ even with a short sintering time (5min),and the transformation tempera-tures gradually increased with increasing sintering temperature because of more Ti-rich TiNi phase formation.Although decreasing the sin-tering temperature and time to 700 ℃ and 5min could not protect defective MWCNTs from reacting with Ti,still-perfect MWCNTs re-mained in the specimens sintered at 900 ℃.This method is expected to supply a basis for preparing CNT-reinforced TiNi composites. | CAI Wei,FENG Xue,and SUI Jiehe National Key Laboratory Precision Hot Processing of Metals,School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China | 2012 | Rare Metals2012，31，1： | 7 |
| 2 | Balancing the anionic framework polarity for enhanced thermoelectric performance in YbMg_(2)Sb_(2) Zintl compounds显示文摘1-2-2-type Zintl phase compound has aroused great interest for potential thermoelectric applications.However,YbMg_(2)Sb_(2) is seldom studied due to the very low electrical conductivity resulting from the large difference in the electronegativity between Mg and Sb.In this paper,we adjust the covalently bonded network of MgeSb by replacing part of the Mg with Zn which has the electronegativity closer to that of Sb.The decreased polarity in the anionic framework offers more free distance for electrons for the enhanced Hall mobility and electrical conductivity.Together with the increased point defect and the decreased lattice thermal conductivity by introduction of Zn,the maximum ZT value of ~0.8 at 773 K is achieved in YbMg_(0.9)Zn_(1.1)Sb_(2) which is~100% enhancement compared with that of YbMg_(2)Sb_(2). | Zongwei Zhang Xinyu Wang Yijie Liu Chen Chen Honghao Yao Li Yin Xiaofang Li Shan Li Fan Zhang Fengxian Bai Jiehe Sui Bo Yu Feng Cao Xingjun Liu Jun Mao Guoqiang Xie Qian Zhang | 2019 | Journal of Materiomics2019，5，4： | 3 |
| 3 | Phase Boundary Mapping in ZrNiSn Half-Heusler for Enhanced Thermoelectric Performance显示文摘The solubility range of interstitial Ni in the ZrNi1+xSn half-Heusler phase is a controversial issue,but it has an impact on the thermoelectric properties.In this study,two isothermal section phase diagrams of the Zr-Ni-Sn ternary system at 973K and 1173 K were experimentally constructed based on the binary phase diagrams of Zr-Ni,Zr-Sn,and Ni-Sn.The thermodynamic equilibrium phases were obtained after a long time of heating treatment on the raw alloys prepared by levitation melting.Solubilities of x<0:07 at 973 K and x<0:13 at 1173 K were clearly indicated.An intermediate-Heusler phase with a partly filled Ni void was observed,which is believed to be beneficial to the lowered lattice thermal conductivity.The highest ZT value~0:71 at 973 K was obtained for ZrNi_(1.11)Sn_(1.04).The phase boundary mapping provides an important instruction for the further optimization of ZrNiSn-based materials and other systems. | Xiaofang Li Pengbo Yang Yumei Wang Zongwei Zhang Dandan Qin Wenhua Xue Chen Chen Yifang Huang Xiaodong Xie Xinyu Wang Mujin Yang Cuiping Wang Feng Cao Jiehe Sui Xingjun Liu Qian Zhang | 2020 | Research2020，，1： | 2 |
| 4 | Achieving High Thermoelectric Performance in Rare-Earth Element-Free CaMg_(2)Bi_(2) with High Carrier Mobility and Ultralow Lattice Thermal Conductivity显示文摘CaMg_(2)Bi_(2)-based compounds,a kind of the representative compounds of Zintl phases,have uniquely inherent layered structure and hence are considered to be potential thermoelectric materials.Generally,alloying is a traditional and effective way to reduce the lattice thermal conductivity through the mass and strain field fluctuation between host and guest atoms.The cation sites have very few contributions to the band structure around the fermi level;thus,cation substitution may have negligible influence on the electric transport properties.What is more,widespread application of thermoelectric materials not only desires high ZT value but also calls for low-cost and environmentally benign constituent elements.Here,Ba substitution on cation site achieves a sharp reduction in lattice thermal conductivity through enhanced point defects scattering without the obvious sacrifice of high carrier mobility,and thus improves thermoelectric properties.Then,by combining further enhanced phonon scattering caused by isoelectronic substitution of Zn on the Mg site,an extraordinarily low lattice thermal conductivity of 0.51Wm^(-1) K^(-1) at 873 K is achieved in(Ca_(0.75)Ba_(0.25))_(0.995)Na_(0.005)Mg_(1.95)Zn_(0.05)Bi_(1.98) alloy,approaching the amorphous limit.Such maintenance of high mobility and realization of ultralow lattice thermal conductivity synergistically result in broadly improvement of the quality factorβ.Finally,a maximum ZT of 1.25 at 873K and the corresponding ZTave up to 0.85 from 300 K to 873K have been obtained for the same composition,meanwhile possessing temperature independent compatibility factor.To our knowledge,the current ZTave exceeds all the reported values in AMg_(2)Bi_(2)-based compounds so far.Furthermore,the low-cost and environmentfriendly characteristic plus excellent thermoelectric performance also make the present Zintl phase CaMg_(2)Bi_(2) more competitive in practical application. | Muchun Guo Fengkai Guo Jianbo Zhu Li Yin Qian Zhang Wei Cai Jiehe Sui | 2020 | Research2020，，1： | 2 |
| 5 | Enhanced upconversion emission in Yb3+ and Er3+ codoped Na:GdF4 nanocrystals by introducing Li+ ions 显示文摘 | Qian Cheng Jiehe Sui Wei Cai | 2012 | Nanoscale2012，4，3： | 1 |
| 6 | MOS charge pumps for low voltage operation 显示文摘 | Wu Jieh -tsomg Chang Kuen -long | 1998 | IEEE J Solid State Circuits1998，33，4： | 1 |
| 7 | Nitrogen-doped carbon nanostructures and their composites as catalytic materials for proton exchange membrane fuel cell显示文摘 | Yuyan Shao Jiehe Sui Geping Yin Yunzhi Gao | 2007 | Applied Catalysis B Environmental2007，，1： | 1 |
| 8 | 显示文摘 | Cai Wei Liu Ailian Sui Jiehe | 2006 | Mater Trans JIM2006，47，： | 1 |
| 9 | A background timing-skew calibration technique for time-interleaved analog-to-digital converters显示文摘 | Wang Chung Yi Wu Jieh Tsorng | 2006 | IEEE Transactions on Circuits and Systems Ⅱ:Express Briefs2006，53，4： | 1 |
| 10 | Preparation and elevated temperatue compressive properties of multi-walled carbon nanotube reinforced Ti composites显示文摘 | Xue F Jiehe S Yan F Wei C | 2010 | Mater Sci Eng α-Struct2010，，： | 1 |
| 11 | Enhanced thermoelectric properties of Zintl phase YbMg_(2)Bi1.98 through Bi site substitution with Sb显示文摘Benefiting from the unique'Phonon-Glass,Electron-Crystal'(PGEC)characteristic,Zintl phases have been considered as a kind of promising thermoelectric materials.For the typical AM2X2 compounds with the CaAl2Si2-type structure,YbMg_(2)Bi2 has shown competitive thermoelectric performance recently.Nevertheless,the optimization of YbMg_(2)Bi2 compounds is primarily focused on the substitution on Yb or Mg site.Herein,the Bi site is substituted by isoelectric Sb and the effect on the thermoelectric transport behavior is investigated.The partial substitution reduces the carrier concentration and induces the lattice deformation caused by the different atomic radius and mass between Bi and Sb,further leading to the decreased power factor and thermal conductivity.Fortunately,the reduction extent of the thermal conductivity outperforms that of power factor.Finally,the Sb substitution successfully results in a better thermoelectric performance compared with that of the pristine YbMg_(2)Bi1.98.Especially,the calculated energy conversion efficiency(a)of YbMg_(2)Bi1.88Sb0.1 which also possesses a relatively high output power density reaches the maximum value of 9.8% when Th=873 K,and Tc=300 K,respectively.This work demonstrates that the idea of substitution on anionic site should be a new strategy to achieve better ZT values for AM2X2 compounds. | Jing Wang Muchun Guo Jianbo Zhu Dandan Qin Fengkai Guo Qian Zhang Wei Cai Jiehe Sui | 2020 | Journal of Materials Science & Technology2020，59，24： | 1 |
| 12 | XSL-based Content Management for Multi-presentation Digital Museum Exhibitions显示文摘 | Jen-Shin Hong Bai-Hsuen Chen Jieh Hsiang | 2001 | ECDL2001，，： | 1 |
| 13 | An architecture and category knowledge for intelligent information retrieval agents显示文摘 | Hsieh-Chang Tu Jieh Hsiang | 2000 | Decision Support Systems2000，28，3： | 1 |
| 14 | An architecture and category knowledge for intelligent information retrieval agents显示文摘 | Hsieh-Chang Tu Jieh Hsiang | 2000 | System Sciences2000，28，4： | 1 |
| 15 | Restructured single parabolic band model for quick analysis in thermoelectricity显示文摘The single parabolic band(SPB)model has been widely used to preliminarily elucidate inherent transport behaviors of thermoelectric(TE)materials,such as their band structure and electronic thermal conductivity,etc.However,in the SPB calculation,it is necessary to determine some intermediate variables,such as Fermi level or the complex Fermi-Dirac integrals.In this work,we establish a direct carrier-concentration-dependent restructured SPB model,which eliminates Fermi-Dirac integrals and Fermi level calculation and emerges stronger visibility and usability in experiments.We have verified the reliability of such restructured model with 490 groups of experimental data from state-of-the-art TE materials and the relative error is less than 2%.Moreover,carrier effective mass,intrinsic carrier mobility and optimal carrier concentration of these materials are systematically investigated.We believe that our work can provide more convenience and accuracy for thermoelectric data analysis as well as instructive understanding on future optimization design. | Jianbo Zhu Xuemei Zhang Muchun Guo Jingyu Li Jinsuo Hu Songting Cai Wei Cai Yongsheng Zhang Jiehe Sui | 2021 | npj Computational Materials2021，，1： | 1 |
| 16 | Unsupervised machine learning for discovery of promising half-Heusler thermoelectric materials显示文摘hermoelectric materials can be potentially applied to waste heat recovery and solid-state cooling because they allow a direct energy conversion between heat and electricity and vice versa.The accelerated materials design based on machine learning has enabled the systematic discovery of promising materials.Herein we proposed a successful strategy to discover and design a series of promising half-Heusler thermoelectric materials through the iterative combination of unsupervised machine learning with the labeled known half-Heusler thermoelectric materials.Subsequently,optimized zT values of~0.5 at 925 K for p-type Sc_(0.7)Y_(0.3)NiSb_(0.97)Sn_(0.03)and~0.3 at 778 K for n-type Sc_(0.65)Y_(0.3)Ti_(0.05)NiSb were experimentally achieved on the same parent ScNiSb. | Xue Jia Yanshuai Deng Xin Bao Honghao Yao Shan Li Zhou Li Chen Chen Xinyu Wang Jun Mao Feng Cao Jiehe Sui Junwei Wu Cuiping Wang Qian Zhang Xingjun Liu | 2022 | npj Computational Materials2022，，1： | 1 |
| 17 | Pollution Haven Hypothesis and Environmen-tal Impacts of Foreign Direct Investment: The Caseof Industrial Emission of 85 & Sulfur Dioxide (S02)in Chinese Provinces 显示文摘 | JieHe | 2006 | Ecological Economics2006，60，1： | 1 |
| 18 | Critical manage- ment in patients with severe enterovirus 71 infection显示文摘 | Jieh N W Chih-Ta Y Cheng NY | 2006 | Pediatr Int2006，48，3： | 1 |
| 19 | A facile single-source route to CdS nanorods 显示文摘 | Cai Wei Li Zhiguo Sui Jiehe | 2008 | Nanotechnology2008，19，46： | 1 |
| 20 | Applica- tion of the multigrid data assimilation scheme to the China Seas' temperature forecast显示文摘 | LI Wei XIE Yuanfu ZHONG jiehe | 2008 | Journal of Atmos- pheric and Oceanic Technology2008，25，11： | 1 |
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