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9篇 您的检索式:作者名="Changlei Li"
    题名 作者 年代 出处 被引量
1Fabrication of the Superhydrophobic Surface on Magnesium Alloy and Its Corrosion Resistance显示文摘The superhydrophobic surface was fabricated on the AZ31 alloy by the combination of the hydrothermal treatment method and post modification with stearic acid. The superhydrophobic surface showed a static water contact angle of 157.6°. The characteristics of the coatings were characterized by scanning electron microscopy(SEM), X-ray diffraction(XRD) and Fourier transform infrared spectroscopy(FTIR). The corrosion resistance of the superhydrophobic coatings was investigated by potentiodynamic polarization test and electrochemical impedance spectroscopy(EIS). The results revealed that the superhydrophobic coatings, characterized by petal-like structure significantly improved the corrosion resistance of the AZ31 alloy.Fen Zhang Changlei Zhang Liang Song Rongchang Zeng Shuoqi Li Hongzhi Cui 2015Journal of Materials Science & Technology2015,31,11:17
2Key CO_(2)capture technology of pure oxygen exhaust gas combustion for syngas-fueled high-temperature fuel cells显示文摘Integrated gasification fuel cells(IGFCs)integrating high-temperature solid oxide fuel cell technology with CO_(2)capture processes represents highly-efficient power systems with negligible CO_(2)emissions.Flame burning with pure oxygen is an ideal method for fuel cell exhaust gas treatment,and this report describes experimental and numerical studies regarding an oxy-combustor for treating the exhaust gas of a 10 kW IGFC system anode.The applied simulation method was verified based on experiments,and the key performance indices of the combustor were studied under various conditions.It was determined that 315 K was the ideal condensation temperature to obtain flame stability.Under these pure oxygen flame burning conditions,CO was almost completely converted,and the dry mole fraction of CO_(2)after burning was C 0.958 when there was up to 5%excess O_(2).Overall,5%excess O_(2)was recommended to maximize CO_(2)capture and promote other environmental considerations.Additionally,the optimal tangential fuel jet angle to control the liner temperature was approximately 25°.The total fuel utilization had to be high enough to maintain the oxygen flame temperature of the anode exhaust gas below 1800 K to ensure that the system was environmentally friendly.The results presented herein have great value for designing IGFCs coupled with CO_(2)capture systems.Hanlin Wang Qilong Lei Pingping Li Changlei Liu Yunpeng Xue Xuewei Zhang Chufu Li Zhibin Yang 2021International Journal of Coal Science & Technology2021,8,3:3
3In-Situ Chemosynthesis of ZnO Nanoparticles to Endow Wood with Antibacterial and UV-Resistance Properties显示文摘Hybrid wood materials have attracted considerable attention because they have combined advantages of both wood and inorganic compounds. This work investigated the microstructural morphology, thermal stability, ultraviolet(UV) stability, and antibacterial property of composites made from wood/ZnO hybrid materials through a facile in-situ chemosynthesis methods. The X-ray diffraction(XRD) and thermogravimetric analysis(TGA) results indicated that the synthesized ZnO particles had an average grain size of about 10.8 nm. The scanning electron microscopy(SEM) observations showed that ZnO nanoflowers self-assembled with nanosheets were presented in wood cell lumens and increased with increasing Zn^(2+)concentrations. ZnO nanoparticles were also generated in the wood cell wall, which was confirmed by the results of energy-dispersive spectroscopy(EDS). The TGA tests also indicated that the thermal stability of wood/ZnO hybrid materials was improved after the formation of ZnO inorganic particles. Finally, the results of antibacterial efficacy tests and UV resistance tests revealed that ZnO nanoparticles showed a promising future as antimicrobial agents against Escherichia coli(E.coli) and UV resistance agents for wood protection.Youming Dong Yutao Yan Huandi Ma Shifeng Zhang Jianzhang Li Changlei Xia Sheldon Q.Shi Liping Cai 2017Journal of Materials Science & Technology2017,33,3:2
4Carbon‑Based Fibers: Fabrication, Characterization and Application显示文摘In recent years,the carbon-based fibers(CBFs)including carbon fibers,carbon nanotube fibers and graphene fibers have received extensive attention due to excellent thermal,electrical and mechanical properties.Here,the current status of CBFs is reviewed from the following aspects:sprecursors,preparation,performance and application.The precursor systems including acrylonitrile copolymers,pitch,cellulose and lignin,carbon nanotube,graphene and other rare synthetic polymeric precursors.The relationship of preparation method and performance of CBFs is presented.In addition,this review gives the overview of application and future development of CBFs.Kunming Li Xuepeng Ni Qianqian Wu Chunshun Yuan Changlei Li Dong Li Huifang Chen Yonggen Lv Anqi Ju 2022Advanced Fiber Materials2022,4,4:1
5Efficacy and Safety of Dexamethasone Ointment on Recurrent Aphthous Ulceration显示文摘Chuanxia Liu Zengtong Zhou Guanjian Liu Qintao Wang Jiangang Chen Ling Wang Yongmei Zhou Guangying Dong Xueyi Xu Yuechun Wang Yiqing Guo Mei Lin Lan Wu Gefei Du Changlei Wei Xin Zeng Xiaoyi Wang Junzheng Wu Bingqi Li Gang Zhou Hongmei Zhou 2012The American Journal of Medicine2012,,3:1
6Analysis and Design of Terahertz Photonic Crystal Fibers by an Effective-Index Method 显示文摘YANFENG LI CHANGLEI WANG NING ZHANG 2006Applied Optics2006,45,33:1
7All-in-one photoelectric logic gates by Dember photodetectors显示文摘Photoelectric logic gates(PELGs) are the key component in integrated electronics due to their abilities of signal conversion and logic operations. However, traditional PELGs with fixed architectures can realize only very limited logic functions with relatively low on–off ratios. We present a self-driving polarized photodetector driven by the Dember effect, which yields ambipolar photocurrents through photonic modulation by a nested grating. The ambipolar response is realized by exciting the whispering-gallery mode and localized surface plasmon resonances,which leads to reverse spatial carrier generation and therefore the contrary photocurrent assisted by the Dember effect. We further design a full-functional PELG, which enables all five basic logic functions(“AND”, “OR”,“NOT”, “NAND”, and “NOR”) simultaneously in a single device by using one source and one photodetector only. Such an all-in-one PELG exhibits a strong robustness against structure size, incident wavelength, light power, and half-wave plate modulation, paving a way to the realization of ultracompact high-performance PELGs.GUOYANG CAO CHANGLEI WANG YU LUO XIAOFENG LI 2023Photonics Research2023,11,7:0
8Construction of NiCo_(2)O_(4) nanoflake arrays on cellulose-derived carbon nanofibers as a freestanding electrode for high-performance supercapacitors显示文摘Cellulose has a wide range of applications in many fields due to their naturally degradable and low-cost characteristics,but few studies can achieve cellulose-nanofibers by conventional electrospinning.Herein,we demonstrate that the freestanding cellulose-based carbon nanofibers are successfully obtained by a special design of electrospinning firstly,pre-oxidation and high-temperature carbonization(1600℃),which display a superior electrical conductivity of 31.2 S·cm^(-1)and larger specific surface area of 35.61 m^(2)·g^(-1)than that of the polyacrylonitrile-based carbon nanofibers(electrical conductivity of 18.5 S·cm^(-1),specific surface area of 12 m^(2)·g^(-1).The NiCo_(2)O_(4)nanoflake arrays are grown uniformly on the cellulose-based carbon nanofibers successfully by a facile one-step solvothermal and calcination method.The as-prepared cellulose-based carbon nanofibers/NiCo_(2)O_(4)nanoflake arrays are directly used as electrodes to achieve a high specific capacitance of 1010 F·g^(-1)at 1 A·g^(-1)and a good cycling stability with 90.84%capacitance retention after 3000 times at 10 A·g^(-1).Furthermore,the all-solid-state symmetric supercapacitors assembled from the cellulose-based carbon nanofibers/NiCo_(2)O_(4)deliver a high energy density of 62 W·h·kg(-1) at a power density of 1200 W·kg^(-1).Six all-solid-state symmetric supercapacitors in series can also power a‘DHU’logo consisted of 36 light emitting diodes,confirming that the cellulose-based carbon nanofiber is a promising carbon matrix material for energy storage devices.Xuepeng Ni Kunming Li Changlei Li Qianqian Wu Chenglin Liu Huifang Chen Qilin Wu Anqi Ju 2023Frontiers of Chemical Science and Engineering2023,17,6:0
9Flexible thermoelectric generator and energy management electronics powered by body heat显示文摘Uninterrupted,efficient power supplies have posed a significant hurdle to the ubiquitous adoption of wearable devices,despite their potential for revolutionizing human‒machine interactions.This challenge is further compounded by the requirement of these devices to supply dependable energy for data-intensive sensing and transmission.Traditional thermoelectric solutions fail to deliver satisfactory performance under conditions of extremely low voltages.Here,we present a novel solution of a wearable thermoelectric generator integrated with an energy management system,which is capable of powering sensors and Bluetooth by harnessing body heat.Distinct from previous works,our innovation lies in its ability to consistently operate even with a minimal temperature difference(i.e.,4 K)between the human skin and the ambient environment,ensuring reliable data transmission within a time as short as 1.6 s.Furthermore,our system can recharge utilizing body heat under ultralow voltage conditions(30 mV).Our developed system provides a novel pathway for the continuous,reliable monitoring of self-contained wearable devices without depending on batteries.Shuai Yang Yumei Li Ling Deng Song Tian Ye Yao Fan Yang Changlei Feng Jun Dai Ping Wang Mingyuan Gao 2023Microsystems & Nanoengineering2023,9,4:0
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