赵廷凯
个性化签名
- 姓名:赵廷凯
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学科领域:
材料科学
- 研究兴趣:
赵廷凯,男,博士,副教授,硕士生导师。主要研究方向:纳米材料和新型能源材料。主讲研究生和本科生课程3门。2005年6月获西安交通大学工学博士学位,2007年10月从西安交通大学博士后流动站出站,2010年8月起在美国西北大学做访问学者1年。自2007年底在西北工业大学材料学院工作;学术兼职:美国ACS member、Sigma Xi member、西安纳米科技学会理事,中国物理学会、颗粒学会、材料学会会员。
学术及科研成果,作为负责人主持国家和地方科技项目8项。以主要完成人身份申请发明专利3项,获授权发明专利2项。曾荣获国家、省部级荣誉18项,如荣获第四届中国科协优秀学术论文奖、分获陕西省(第九、十二届)、西安市自然科学优秀学术论文奖等。完成的博士论文被评为2005年西安交通大学优秀博士论文。在APL、Carbon、JNN、JNM、<科学通报>、<物理学报>等国内外著名学术期刊发表论文近40篇,SCI、EI收录46篇,引用约90篇次。参加国际会议2个、国内会议10个,发表会议论文数十篇。
2004年12月份发表在《科学通报》上的文章“气氛与压力对制备非晶碳纳米管的影响”引起了社会的关注。受到了中国科学院主办,中国工程院、国家自然科学基金委员会共办的《中国科学报》(原《科学时报》)总第3362期的报道。该报纸2005年1月19日A3版报道了题为:“我国碳纳米管研究获新进展――在一种改进型控温电弧炉中制备出非晶型碳纳米管”。2011年5月份发表在《Applied Physics Letters》上的文章也受到了《中国科学报》2011年5月10日A1版报道了题为:“我国非晶碳纳米管理论研究取得重要进展”。2012年发表的文章又受到《中国科学报》的专题报道:“电化学法精确快速检测三聚氰胺”。
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【期刊论文】Physical model for the growth of amorphous carbon nanotubes
赵廷凯, T. K. Zhao, G. M. Li, L. H. Liu, Y. N. Liu, and T. H. Li
APL,-0001,():
-1年11月30日
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赵廷凯, 柳永宁, 朱杰武
科学通报2004年12月第49卷第23期,-0001,():
-1年11月30日
采用温控电弧装置,以Co, Ni 合金粉未作为崔化剂,放电电流为80A,电压为32V,放电时间为5min,研究了不同气氛、压力及温度对制取非晶碳纳米管的影响,确定了优化参数。在环境温度为600°C时,氢气气氛,真空度约为6.6×104 Pa,非晶碳纳米管的产量和纯度质量分数都分别达到了6.5g/h和80%以上,其管径为7~20nm.
非晶碳纳米管, 温控电弧法, 气氛影响, 压力影响
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赵廷凯, Peng Zhang, Xuedong Wei, Yongning Liu, Jiewu Zhu, Zhanling Zhang, Tingkai Zhao
Journal of Alloys and Compounds 399 (2005) 270-275,-0001,():
-1年11月30日
Two non-stoichiometric low-Co AB5 alloys, Ml0.95Mg0.05Ni3.8Co0.3Mn0.3Al0.4 (AB4.8) and Ml0.95Mg0.05Ni3.6Co0.3Mn0.3Al0.4 (AB4.6), were designed to reduce the cost ofAB5 alloys. The maximum discharge capacities of the two low-Co alloys can reach 307 mAh/g forAB4.8 alloy and 298 mAh/g for AB4.6 alloy, respectively. After 300 cycles, the capacity decay is 23% for AB4.8 alloy and 19.1% for AB4.6 alloy. XRD patterns and the microstructure, examined by optic microscope and SEM, show that both of the two low-Co alloys are composed of three phases, LaNi5 matrix phase, AlMnNi2 secondary phase and LaNi tertiary phase. For the two low-Co alloys, the microhardness (HV) of the secondary phase are only half of that of the matrix phase, which could resist the crack propagating and make the alloys not amenable to pulverization. The small amount of Mg promotes to form the soft secondary phase, which is believed to be the reason for improving the cycling stability.
Hydrogen storage materials, Microstructure, Electrochemical reactions
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赵廷凯, Tingkai Zhao, Yongning Liu, Jiewu Zhu
Carbon 43 (2005) 2907-2912,-0001,():
-1年11月30日
Large amounts of amorphous carbon nanotubes (ACNTs) were prepared with Co–Ni alloy powders as catalyst in hydrogen gas atmosphere by a modified arc discharging furnace which can control temperature during the electric arcing process. The experimental results indicate that the cooperative function of temperature and catalyst plays an important role in the soot production rate and the relative ACNT purity. When temperature increases from 25°C to 700°C, the soot production rate increases from around 1 g/h to 8 g/h, the best relative ACNT purity at 600°C can reach up to 99% compared to the room temperature sample. Without catalyst, only plate graphite is formed at 25°C and very few carbon nanotubes are found when temperature increases to 600°C. TEM, SEM, HRTEM and XRD analysis showed that the as-prepared carbon nanotubes are almost amorphous. The soot production rate is 8 g/h and diameter range of amorphous carbon nanotubes is about 7–20 nm, respectively. © 2005 Elsevier Ltd. All rights reserved.
Carbon nanotubes, Arc discharge, X-ray diffraction
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赵廷凯, Tingkai Zhao, Yongning Liu
Letters to the Editor. Carbon 42 (2004) 2735-2777,-0001,():
-1年11月30日
A., Carbon nanotubes, B., Arc discharge, C., X-ray diffraction,, Raman spectroscopy
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【期刊论文】Gas and pressure effects on the synthesis of amorphous carbon nanotubes
赵廷凯, ZHAO Tingkai, LIU Yongning & ZHU Jiewu
Chinese Science Bulletin 2004, Vol. 49, No. 24, 2569-2571,-0001,():
-1年11月30日
The effects of gas, pressure and temperature on the production of amorphous carbon nanotubes were investigated using an arc discharging furnace at controlled temperature. Co/Ni alloy powder was used as catalyst. The discharge current was 80 A and voltage was 32 V. The optimal parameters were obtained: 600 temperature, hydrogen gas and 500 torr pressure. The productivity and purity of amorphous carbon nanotubes are 6.5 gram per hour and 80%, respectively. The diameter of the amorphous carbon nanotubes is about 7 20 nm.
amorphous carbon nanotubes, arc discharge at controlled temperature, effects of gas and pressure.,
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赵廷凯, Delong He, Yongning Liu, Tingkai Zhao, Jiewu Zhu, Guang Yu
,-0001,():
-1年11月30日
The effect of oxygen on the growth of single-walled carbon nanotubes was studied with Ni–Co alloy powder as catalyst under helium atmosphere of 500 Torr by electric arc discharge. The oxygen included in nickel or (and) cobalt oxides was added in catalyst. The content of oxygen in atmosphere was controlled by changing vacuum degree inside furnace before inputting buffer gas. The examinations of TEM and Raman scattering showed that oxygen in metal oxide as catalyst promotes the nucleation of SWCNT by taking effect on the metal catalyst particles. However, O2 in atmosphere has the role of oxidizing amorphous particles along with nanotubes. When its molar proportion is higher than 0.22 ppm (Parts per million), the carbon nanotubes produced are oxidized and their purity decreases. The diameter of single-walled carbon nanotube obtained under different condition has a narrow distribution around 1.28 nm.
Carbon nanotubes, SWCNT, Synthesis, Amorphous nanoparticle, Electric arc discharge, Oxygen
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赵廷凯, Tingkai Zhao, , Qinghu Tang, Yongning Liu, Changchun Zhu, and Xiang Zhao
Journal of Nanomaterials Volume 2007, Article ID 84540, pages,-0001,():
-1年11月30日
Single-walled carbon nanotubes (SWCNTs) were prepared by a modified arc discharging furnace using Fe-Ni-Mg powders as catalyst at 600◦C. The effects of catalyst composition and content on the production rate and purity of SWCNTs are investigated in this paper. When the Fe-Ni-Mg catalyst composition is 2 : 1 : 2 wt% and the catalyst content is 5 wt%, the experimental results indicate that the production of SWCNTs is 12 grams per hour, and the purity and diameter of SWCNTs are 70% and 1.22~1.38 nm, respectively. The results indicate that the cooperative function of catalyst composition and content plays an important role in the production of SWCNTs. The aim of this work is to control the production process of SWCNTs efficiently.
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【期刊论文】Amorphous carbon nanotubes produced by a temperature controlled DC arc discharge
赵廷凯, Yongning Liu, Song Xiaolong, Zhao Tingkai, Zhu Jiewu, Michael Hirscher, Fritz Philipp
Letters to the Editor Carbon 42 (2004) 1852-1855,-0001,():
-1年11月30日
A., Carbon nanotubes, B., Arc discharge, C., X-ray diffraction
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