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| 1 | Synthesis of covalently bonded reduced graphene oxide-Fe_(3)O_(4) nanocomposites for efficient electromagnetic wave absorption显示文摘High-performance electromagnetic(EM)wave absorbers,covalently bonded reduced graphene oxideFe_(3)O_(4) nanocomposites(rGO-Fe_(3)O_(4)),are synthesized via hydrothermal reaction,amidation reaction and reduction process.The microstructure,surface element composition and morphology of rGO-Fe_(3)O_(4) nanocomposites are characterized and corresponding EM wave absorption properties are analyzed in great detail.It demonstrates that Fe_(3)O_(4) nanoparticles are successfully covalently grafted onto graphene by amide bonds.When the mass ratio of rGO and Fe_(3)O_(4) is 2:1(sample S2),the absorber exhibits the excellent EM wave absorption performance that the maximum reflection loss(RL)reaches up to-48.6 dB at 14.4 GHz,while the effective absorption bandwidth(RL<-10 dB)is 6.32 GHz(11.68-18.0 GHz)with a matching thickness of 2.1 mm.Furthermore,radar cross section(RCS)simulation calculation is also adopted to evaluate the ability of absorbers to scatter EM waves,which proves again that the absorption performance of absorber S2 is optimal.The outstanding EM wave absorption performance is attributed to the synergistic effect between dielectric and magnetic loss,good attenuation ability and excellent impedance matching.Moreover,covalent bonds considered to be carrier channels can facilitate electron migration,adjust EM parameters and then enhance EM wave absorption perfo rmance.This work provides a possible method for preparing efficient EM wave absorbers. | Xudong Liu Ying Huang Ling Ding Xiaoxiao Zhao Panbo Liu Tiehu Li | 2021 | Journal of Materials Science & Technology2021，，13： | 8 |
| 2 | Mechanical, tribological and heat resistant properties of fluorinated multi-walled carbon nanotube/bismaleimide/cyanate resin nanocomposites显示文摘Bismaleimide containing cyanate resin(BMI/CE) pre-ploymer was used as resin matrix. Fluorinated multiwalled carbon nanotubes(F-MWCNTs) were used as fillers to prepare F-MWCNT/BMI/CE nanocomposites via a solution intercalation method. The influence of F-MWCNT content on the mechanical, tribological and heat resistant properties of the nanocomposites was investigated. The morphology of the fracture surface and the wear surface of nanocomposites were characterized by scanning electron microscopy.Results show that the addition of F-MWCNTs is beneficial to improving the mechanical and tribological properties of the nanocomposites. It's worth noting that when the content of F-MWNTs was 0.6 wt%, the performances of nanocomposite are optimized(i.e., highest impact strength, lowest frictional coefficient and wear rate). In addition, the nanocomposites exhibit good thermal stability in comparison with BMI/CE. | Pengbo Li Tiehu Li Hongxia Yan | 2017 | Journal of Materials Science & Technology2017，33，10： | 5 |
| 3 | Multi-heteroatom doped porous carbon derived from insect feces for capacitance-enhanced sodium-ion storage显示文摘The large-scale application of sodium ion batteries(SIBs)is limited by economic and environmental factors.Here,we prepare multi-heteroatom self-doped hierarchical porous carbon(HHPC)with a honeycomb-like structure by one-step carbonization method using high-yield and low-cost biomass silkworm excrement as a precursor.As an anode for SIB,HHPC-1100 exhibits a capacity of 331.7 mA h g^(-1) at 20 mA g^(-1),while it also reveals remarkable rate performance and stable long cycle capability due to its abundant pore structure and proper amount of hetero atom doping.Moreover,the synergistic effect of O,N,S,P co-doping in carbon materials on sodium ion adsorption is verified by the first-principles study,which provide a theoretical basis for the prominent electrochemical performance of the material. | Chen Chen Ying Huang Zhuoyue Meng Zhipeng Xu Panbo Liu Tiehu Li | 2021 | Journal of Energy Chemistry2021，30，3： | 4 |
| 4 | Enhancement of the mechanical properties of polylactic acid/basalt fiber composites via in-situ assembling silica nanospheres on the interface显示文摘A valid strategy to tailor the properties of polylactic acid for more extensive applications was introducing filler.In this work,basalt fiber assembled with in-situ SiO_(2) nanoparticles on the surface was successfully prepared via hydrothermal method and it was further treated with coupling agent KH-550 to improve interfacial interaction between polylactic acid(PLA)and basalt fibers(BF).It was demonstrated that the introduction of BFS could increase the crystallization of PLA and resulted in forming trans-crystallization based on TG and DSC results.The tensile strength of PLA/BF composites raised from 39 MPa to 62.5 MPa with increasing the fiber loading from 1 wt%to 10 wt%.Furthermore,the interfacial interaction could be effectively improved by assembling SiO_(2)(especially with 250 nm in diameter)on BF surface to build mechanical locking,which could keep the PLA matrix in place during the mechanical deformation with the tensile strength value raised from 62.5 MPa to 74.0 MPa.It is noticeable that the impact and flexural properties were effectively increased with the incorporation of in-situ SiO_(2) nanoparticles.The further KH-550 treatment made a positive impact as well.For instance,the impact strength and flexural strength of the sample with SiO_(2) and KH-550 modification were improved to 22.49 k J/m^(2) and 146.83 MPa and it enhanced about 42.16%and 41.04%than those of neat PLA,respectively.Therefore,an efficient enhancement of mechanical performance was achieved and this concept of assembling in-situ SiO_(2) on silica-based fiber as a modifier was a novel and simple path to design the interfacial construction and properties of the polymer composites. | Xianliang Hou Shun Yao Zhen Wang Changqing Fang Tiehu Li | 2021 | Journal of Materials Science & Technology2021，，25： | 4 |
| 5 | Preparation and electrochemical property of CMC/MWCNT composite using ionic liquid as solvent显示文摘Carboxymethyl cellulose sodium(CMC)/multi-walled carbon nanotube(MWCNT) composite was prepared by dissolving CMC with ionic liquid as solvent.The microstructure and electrochemical properties of CMC/MWCNTs were studied using field emission scanning electron microscopy(FE-SEM),high-resolution transmission electron microscopy(HR-TEM),X-ray diffraction(XRD) system and electrochemical workstation.The experimental results indicated that the CMC dissolved with ionic liquid could be uniformly enwrapped on the surface of MWCNTs,and the coating thickness of CMC was about 5.4 nm.There are obvious oxidation peaks in the cyclic voltammograms curves of glassy carbon electrode coated with a CMC/MWCNT composite in H2O2 phosphate buffer solution.The MWCNT content and ultrasonic time strongly affected the dispersivity and electrochemical property of CMC/MWCNT composite.While the MWCNT content and ultrasonic processing time was 2 wt% and 2 h respectively,CMC/MWCNT composite exhibited excellent electrocatalytic activity. | ZHAO TingKai LIU LeHao LI GuangMing DU Li ZHAO Xing YAN Jin CHENG YouLiang DANG ALei LI TieHu | 2012 | Chinese Science Bulletin2012，57，14： | 3 |
| 6 | Experimental design and theoretical evaluation of nitrogen and phosphorus dual-doped hierarchical porous carbon for high-performance sodium-ion storage显示文摘Starch has a wide range of sources and can be used as a high-quality precursor for sodium-ion battery anode materials.However,the carbonization yield and specific capacity of carbon materials obtained by directly pyrolyzing starch are low.Herein,starch is used as the carbon source,and ammonium polyphosphate(APP)is used as the cross-linking agent and dopant to prepare a nitrogen and phosphorus co-doped porous carbon(NPPC).As the anode for sodium-ion batteries,NPPC-2 exhibits a high reversible capacity of 385.8 mAhg^(-1)at 50 mAg^(-1).Even after 1000 cycles at a large current density of 5 Ag^(-1),the reversible capacity can still be maintained at 126.9 mAhg^(-1).Based on detailed data and first-principles calculations,the excellent performance of NPPC is due to the effective doping of nitrogen and phosphorus elements,which distorts the graphite sheet,introduces defects,and increases the graphite layer spacing,thereby enhancing the adsorption capacity of the carbon material for sodium ions,reducing the diffusion barrier of sodium ions.This work provides a new idea for heteroatom doping and carbon material modification. | Chen Chen Ying Huang Zhuoyue Meng Mengwei Lu Zhipeng Xu Panbo Liu Tiehu Li | 2021 | Journal of Materials Science & Technology2021，，17： | 2 |
| 7 | 显示文摘 | Jing Deqi Li Tiehu Li Hao | 2008 | Journal of Func-tional Materials2008，39，8： | 1 |
| 8 | Carbonization Behavior of Coal Tar Pitch Modified with Divinylbenzene and Optical Texture of Resultant Semicokes显示文摘 | Lin Qilang Li Tiehu Zheng Changzheng | 2004 | Journal of Analytical and Applied Pyrolysis2004，71，1： | 1 |
| 9 | Carboniza-tion behavior of coal-tar pitch modified with divinyIbenzene and optical texture of resultant semi-cokes显示文摘 | Lin Qiliang Li Tiehu Zheng Changzheng | | 0，，02： | 1 |
| 10 | Study of the Modification of Coal-tar Pitch with P-methyl Benzaldehyde显示文摘 | Lin Qilang Li Tiehu Ji Yongbin | 2005 | Fuel2005，84，2： | 1 |
| 11 | Carbonization Behavior of Coal-tar Pitch Modified with Divinylbenzene and Op- tical Texture of Resultant Semi-cokes显示文摘 | Lin Qilang Li Tiehu Zheng Changzheng | 2004 | Journal of Analytical and Applied Pyrolysis2004，71，2： | 1 |
| 12 | Microwave absorption and mechanical properties of La (NO3)3-doped muhi-walled carbon nanotube/polyvinyl chloride compos- ites 显示文摘 | Cuiling Hou Tiehu Li Tingkai Zhao | 2012 | Mater Lett2012，67，： | 1 |
| 13 | Preparation of activated carbons by microwave heating KOH activation显示文摘 | YONGBIN JI TIEHU LI LI ZHU | 2007 | Applied Surface Science2007，254，： | 1 |
| 14 | Electromag- netic wave absorbing properties of carbon nanotubes doped rare metal/pure carbon nanotubes double-layer polymer composites 显示文摘 | Cuiling Hou Tiehu Li Tingkai Zhao | 2012 | Materials and Design2012，33，： | 1 |
| 15 | Study on the Modification of Coal-tar Pitch with P-methyl Benzaldehyde显示文摘 | Lin Qilang Li Tiehu Ji Yongbin | 2005 | Fuel2005，84，23： | 1 |
| 16 | Carbonization Behavior of Coal Tar Pitch Modified with Divinylbenzene and Optical Texture of Resultant Semicokes显示文摘 | Lin Qilang Li Tiehu Zheng Changzheng | 2004 | Journal of Analytical and Applied Pyrolysis2004，71，1： | 1 |
| 17 | Carbonization Behavior of Coal Tar Pitch Modified with Divinylbenzene and Optical Texture of Resultant Semicokes 显示文摘 | Lin Qilang Li Tiehu Zheng Changzheng | 2004 | Journal of Analytical and Applied Pyrolysis2004，71，1： | 1 |
| 18 | Carbonization behavior of coal tar pitch modified with divinylbenzene and optical texture of resultant semicokes显示文摘 | Lin Qilang Li Tiehu Zheng Changzheng | 2004 | Journal of Analytical and Applied Pyrolysis2004，71，1： | 1 |
| 19 | 显示文摘 | Lin Qilang Li Tiehu Ji Yongbin | 2005 | Fuel2005，84，23： | 1 |
| 20 | 显示文摘 | Ren Chengqiang Li Tiehu Song Faju | 2006 | Materials Letters2006，60，1314： | 1 |
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