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| 1 | Effects of PyC shell thickness on the microstructure,ablation resistance of SiCnws/PyC-C/C-ZrC-SiC composites显示文摘SiC nanowires/pyrocarbon(SiCnws/PyC)core-shell structure toughenedC/C-ZrC-SiC composites were fabricated by CLVD process,and the influences of PyC shell thickness on the microstructure and ablation resistance of the composites were researched.The results presented that SiCnws/PyC core-shell structure had a linear shape,and the composites became dense with the increasing PyC thickness.When the thickness of PyC shell increased from 0 to 2.4μm,the density and thermal conductivity of the composites was improved gradually,but the coefficient of thermal expansion(CTE)decreased firstly and then increased.After the ablation test for 90 s,the ablation rates of the composites decreased continuously as the PyC thickness increased from 0 to 1.4μm,but increased when the PyC thickness was up to 2.4μm.Especially when the PyC thickness was 1.4μm,the linear and mass ablation rates of the composites were 71.25%and 63.01%lower than those of the composites without PyC shell.The reasons behind the remarkable improvement of anti-ablation property were that the proper PyC thickness could alleviate the CTE mismatch to promote the formation of complete oxide coating,improve the thermal conductivity to reduce heat corrosion and enhance the capability to limit the mechanical erosion. | Qinchuan He Hejun Li Xuemin Yin Jinhua Lu | 2021 | Journal of Materials Science & Technology2021，，12： | 4 |
| 2 | Effect of chemical vapor infiltration treatment on the wave-absorbing performance of carbon fiber/cement composites显示文摘Short carbon fibers were treated at high temperatures around 1100°C through chemical vapor infiltration technology. A thinner layer of pyrocarbon was deposited on the fiber surface. The dispersion of carbon fibers in a cement matrix and the mechanical properties of carbon fiber/cement composites were investigated by scanning electron microscopy (SEM) and other tests. The reflec-tivity of electromagnetic waves by the composites was measured in the frequency range of 8.0-18 GHz for different carbon fiber contents of 0.2wt%, 0.4wt%, 0.6wt%, and 1.0wt%. The results show that the reflectivity tends to increase with the increase of fiber content above 0.4wt%. The minimum reflectivity is -19.3 dB and the composites exhibit wave-absorbing performances. After pyro-carbon is deposited on the fiber, all the reflectivity data are far greater. They are all above -10 dB and display mainly wave-reflecting performances. | Kezhi Li Chuang Wang Hejun Li Lingjun Guo Jihua Lu | 2008 | Journal of University of Science and Technology Beijing2008，15，6： | 4 |
| 3 | NiCoLDH nanosheets grown on MOF-derived Co_(3)O_(4) triangle nanosheet arrays for high-performance supercapacitor显示文摘Hierarchical Co_(3)O_(4)@NiCoLDH nanosheets(NSs)were prepared on carbon cloth through a multistep method,containing Metal-organic frameworks(MOF)-templated thermal annealing and electrodeposition.The triangle-shaped Co_(3)O_(4 NSs)were firstly obtained by thermal treatment of MOF templates in air.Then,ultrathin NiCoLDH_(NSs)were in-situ electrodeposited on the surface of Co_(3)O_(4NSs),constructing a core-shell structure.Benefiting the unique hierarchical structure,high conductivity of Co_(3)O_(4 NSs)core and large surface area of NiCoLDHNSs shell,the Co_(3)O_(4)@NiCoLDH_(NSs)array served as supercapacitor electrode exhibits excellent electrochemical properties,such as high specific capacitance of 1708 F g^(-1)(850 C g^(-1))at a current density of 1 A g^(-1),good rate capability,and excellent cycling stability.Further,the asymmetric supercapacitor assembled by Co_(3)O_(4)@NiCoLDH_(NSs)and activated carbon,also displays superior electrochemical perfo rmance with high energy density and power density.Remarkably,the strategy of constructing core-shell structure based on MOF templates could be extended to other electrochemical fields. | Xuemin Yin Hejun Li Ruimei Yuan Jinhua Lu | 2021 | Journal of Materials Science & Technology2021，，3： | 2 |
| 4 | Effect of Monolithic LaB_6 on the Ablation Resistance of ZrC/SiC Coating Prepared by Supersonic Plasma Spraying for C/C Composites显示文摘Ablation resistance of monolithic LaB_6-doped ZrC coating for SiC-coated carbon/carbon composites by supersonic atmospheric plasma spray was investigated under an oxyacetylene torch with a heat flux of 4.18 MW/m^2. Result shows that ZrC coating with 10 vol.% LaB_6 has a good ablation resistance compared with pure ZrC, ZrC with 20 vol.% LaB_6 and SiC-doped ZrC coating. After ablation for 15 s, the weight is increased by 1.12 mg/s. The good ablation resistance is ascribed to the formation of a stabilized scale which consists of protective La_2Zr_2O_7-containing molten phase and ZrO_2 particles keeping the integrity of the coating. | Yujun Jia Hejun Li Lu Li Qiangang Fu Kezhi Li | 2016 | Journal of Materials Science & Technology2016，32，10： | 2 |
| 5 | Influence of lanthanum on the performance of Zr-Co/activated carbon catalysts in Fischer-Tropsch synthesis显示文摘在 Zr-Co/activated 碳(交流) 上装载催化剂的 La 的影响为 Fischer-Tropsch 合成被学习了。催化剂样品被 XRD, TPR, CO-TPD,和温度描绘规划公司加氢。催化性质在一个固定的床反应堆被评估。试验性的结果证明那公司变换从 86.4% ~ 92.3% 增加了,到甲烷的选择从 14.2% ~ 11.5% 减少了,当装载的低 La (La =0.2wt%) 被增加进 Zr-Co/AC 催化剂时, C 5+ 选择从 71.0% ~ 74.7% 增加了。然而, La 的高装载(La = 0.3 1.0 wt%) 将减少催化剂活动以及 C 5+ 选择和增加甲烷选择。XRD 结果显示了有的那修改 La 的 Zr-Co/AC 催化剂公司的分散上的小效果催化剂。但是, TPR, CO-TPD,和温度的结果规划了显示的公司加氢技术钴减小的程度被发现极大地影响催化剂的活动和选择。La 的小数量的增加增加了 Zr-Co/AC 催化剂的 reducibility 并且制止了甲烷的形成并且改进了选择长锁住烃。然而, La 的过量导致了公司的 reducibility 的减少催化剂因此导致了更高的 methanation 活动。 | Tao Wang Yunjie Ding Yuan Lu Hejun Zhu Liwu Lin | 2008 | Journal of Natural Gas Chemistry2008，17，2： | 2 |
| 6 | Aqueous dispersion of graphene sheets stabilized by ionic liquid-based polyether显示文摘 | Gao Hejun ZhangShaohua Lu Fei | | 0，，17： | 1 |
| 7 | Improvement in tough- ness of carbon/carbon composites Using mulitiple matrixes显示文摘 | Li Hailiang Li Hejun Lu Jinhua | 2011 | Mater Sci Engi2011，38，9： | 1 |
| 8 | Influence of Thermal Shock on the Mechanical Behavior of Si-SiC Coated Carbon/Carbon Composites显示文摘Si-SiC coating was prepared on the surface of carbon/carbon (C/C) composites by a two-step technique of pack cementation, and the influences of thermal shock between 1773 K and room temperature in air on the mechanical property and fracture behavior of the coated C/C were studied. The results show that, after thermal shock between 1773 K and room temperature for 5, 10 and 15 times, the flexural strength of coated composites increases by 4.29%, 15.00% and 24.20%, respectively. The toughness of the coated C/C enhances gradually during the thermal shock test. The improvement of the mechanical property after the thermal shock test is primarily caused by the weakening of the fiber-matrix interface and the reduction of residual thermal stresses by thermal shock. | Qiangang Fu Hejun Li Yongjie Wang Kezhi Li Lu Wei | 2009 | Journal of Materials Science & Technology2009，25，2： | 1 |
| 9 | Comparative Study on Analysis and Fitting of Pudong Chicken Growth Curve显示文摘The objective of this paper was to study the growth and development laws of Pudong chicken. The growth curve of Pudong chicken(cock and hen) from 0 to 20 weeks was analyzed and fitted with three models(Gompertz, Logistic and Bertalanffy). It was concluded that the growth curves were appropriately fitted with three models, and fitness degree(R2)in growth data of Pudong chicken were all above 0.992. The Bertalanffy model was the most effective with the highest R2 for cock(R2=0.995) and hen(R2=0.999), respectively. With further analysis of fitted parameters for Logistic model of cock, 0-3 weeks' fitted values were significantly greater than measured values and 4-8 weeks ' fitted values were lower than measured values. Compared with Logistic model, the values calculated by Gompertz model and Bertalanffy model were more coincident with the practical measuring values. For hens, 0-3 weeks ' fitted values of Logistic model were significantly greater than measured values and 0-2 weeks ' fitted values of Gompertz model were slightly greater than measured values, while the values calculated by Bertalanffy model best matched the observed val-ues from actual measure. The results showed that Bertalanffy model used to estimate the growth weight of Pudong chicken was the best while Logis-tic model was the worst. So the fitness and analysis of growth curves of Pudong chicken are valid, which may be adopted to predict growth and de-velopment laws of Pudong chicken and provide reliable data for precise feeding and breeding. | Lu Xuelin Zhao Lele Li Hejun Xu Dong Wu Haomin Xu Weibin | 2018 | Animal Husbandry and Feed Science2018，10，3： | 1 |
| 10 | Preparation of low-density polyethylene / low-temperature expandable graphite composites with high thermal conductivity by an in situ expansion melt blending process 显示文摘 | Wu Hejun Lu Canhui Zhang Wei | 2013 | Materials & Design2013，52，： | 1 |
| 11 | Templated synthesis of spinel cobaltite MCo_(2)O_(4) (M¼Ni, Co and Mn) hierarchical nanofibers for high performance supercapacitors显示文摘Rational construction of transitional metal oxides electrode materials with suitable structure and composition is an effective strategy of improving their electrochemical performance.Herein,novel MCo_(2)O_(4) hierarchical nanofibers(H-MCo_(2)O_(4)NFs,M¼Ni,Co and Mn)were fabricated by a multi-step selftemplating method using electrospun nanofibers as precursors.Benefiting from the unique structure,such as numerous of vertically interlinked nanosheets on the surface and 1D interwoven nanofibers networks,the obtained HeNiCo_(2)O_(4)NFs electrode exhibits a high specific capacitance of 1750 F g1(At a current density of 0.5 A g1),good rate capability(Capacitance retention of 70%at 20 A g1),and outstanding cycling stability(Capacitance retention of 92%after 6000 cycles).Moreover,the solid-state hybrid supercapacitor assembled by HeNiCo_(2)O_(4)NFs and activated carbon(AC),delivers a high energy density of 38.4 Wh kg1 at a power density of 800 W kg1,and excellent cycling stability.Thus,the HeNiCo_(2)O_(4)NFs is a promising candidate material for supercapacitors electrode and this self-templating method in this work also provides a new path for the preparation of one-dimensional hierarchical metallic oxides. | Xuemin Yin Hejun Li Ruimei Yuan Yameng Jiao Jinhua Lu | 2021 | Journal of Materiomics2021，7，4： | 1 |
| 12 | Protein-decorated re- duced oxide graphene composite and its application to SERS显示文摘 | Lu Fei Zhang Shaohua Gao Hejun | 2012 | ACS Appl Mater Interfaces2012，4，： | 1 |
| 13 | Enhanced photoelectrochemical water-splitting effect with a bent ZnO nanorod photoanode decorated with Ag nanoparticles显示文摘 | Yuefan Wei Lin Ke Junhua Kong Hong Liu Zhihui Jiao Xuehong Lu Hejun Du Xiao Wei Sun | 2012 | Nanotechnology2012，，23： | 1 |
| 14 | Metal-organic framework derived hierarchical NiCo_(2)O_(4) triangle nanosheet arrays@SiC nanowires network/carbon cloth for flexible hybrid supercapacitors显示文摘To overcome the disadvantages of traditional powder electrodes,such as the insufficient performance,the aggregation of active materials,and the complex fabrication process,rationally constructing free-standing electrode materials with hierarchical architecture is an effective and promising method,which could further improve the electrochemical properties.Herein,using metal-organic framework nanoarrays(MOFNAs)as self-sacrificial templates and SiC nanowires(SiCNWs)network as nanoscale conductive skeletons,we successfully fabricated the hierarchical core-shell SiCNWs@NiCo_(2)O_(4)NAs on carbon cloth(CC)substrate.Taking advantages of structural merits,such as hierarchical porous triangle-like NiCo_(2)O_(4)NAs,the interwoven SiCNWs network and conductive CC substrate,when evaluated as a binder-free supercapacitor electrode,the CC/SiCNWs@NiCo_(2)O_(4)NAs shows a high specific capacitance of 1604.7 F g^(-1)(specific capacity of 222.9 mA h g^(-1))at 0.5 A g^(-1),good rate performance,and excellent cycling stability.Significantly,the hybrid supercapacitor assembled with CC/SiCNWs@NiCo_(2)O_(4)NAs as the cathode and MOF derived CC/SiCNWs@CNAs as the anode,could deliver a high specific density of 49.9 W h kg^(-1) at a specific power of 800 W kg^(-1),stable cycling performance,and good flexibility.Impressively,this feasible strategy for fabricating hierarchical structure displays great potential in the field of energy storage. | Xuemin Yin Hejun Li Ruimei Yuan Jinhua Lu | 2021 | Journal of Materials Science & Technology2021，，22： | 1 |
| 15 | Influence of the electronic configuration of the central metal ions on catalytic activity of metal phthalocyanines to Li/SOCl 2 battery显示文摘 | Zhanwei Xu Jianshe Zhao Hejun Li Kezhi Li Zeyuan Cao Jinhua Lu | 2009 | Journal of Power Sources2009，，2： | 1 |
| 16 | Effect of Vanadium Promotion on Activated Carbon-Supported Cobalt Catalysts in Fischer–Tropsch Synthesis显示文摘 | Tao Wang Yunjie Ding Jianmin Xiong Li Yan Hejun Zhu Yuan Lu Liwu Lin | 2006 | Catalysis Letters (-)2006，，1： | 1 |
| 17 | Construction of multi-structures based on Cu NWs-supported MOF-derived Co oxides for asymmetric pseudocapacitors显示文摘Cu@MOF core-shell nanowires are synthesized by introducing oxidizable and CTAB-modified metal nanowires as self-engaged templates and supporting MOFs for a one-dimension nanostructure.The following thermal process is controlled to obtain several one-dimension structure s ofCuCo-mixed materials,such as nanorods,single-shell and double-shell nanowires.The hollow structure for electrode materials enlarges the surface area,provides buffer space for electrolyte to accelerate the ion/charge transfers and for the structure to reduce injuries of volume expansion during cycling.Together with some other merits,such as adequate oxidation of the MOFs,small crystal grains of the material,and well-mixed Cu/Co oxides,the double-shell Cu@MOF nanowires(CuCo-DS5)applied for pseudocapacitors deliver advanced electrochemical performance with a specific capacitance of 563.8 F g^(-1)at 1 A g^(-1)as well as an outstanding cycling stability with a 92%retention after 3000 cycles at 5 A g^(-1).Meanwhile,an asymmetric pseudocapacitor constructed with the CuCo-DS5 and active carbon(AC)shows a high specific capacitance and energy density. | Ruimei Yuan Hejun Li Xuemin Yin Peipei Wang Jinhua Lu Leilei Zhang | 2021 | Journal of Materials Science & Technology2021，，6： | 1 |
| 18 | REFLECTION AND TRANSMISSION OF HARMONIC WAVES AT A PLANE INTERFACE BETWEEN LINEAR AND NONLINEAR DIELECTRICS显示文摘The laws of reflection and transmission of harmonic waves at a plane interface between a linear dielectric and a nonlinear dielectric are carefully analyzed. The exact expressions of the reflective and transmissive fields are derived. The further discussions are made to the fields at the conditions of vertical incidence and phase-matching. | Yin Hejun Lu Baowei Song Wenmiao Yin Yuanzhao(Institute of Electronics, Academia Sinica, Beijing 100080) | 1996 | Journal of Electronics(China)1996，13，1： | 0 |
| 19 | Assembly and phylogenomic analysis of cotton mitochondrial genomes provide insights into the history of cotton evolution显示文摘Cotton is a major crop that provides the most important renewable textile fibers in the world.Studies of the taxonomy and evolution of cotton species have received wide attentions,not only due to cotton’s economic value but also due to the fact that Gossypium is an ideal model system to study the origin,evolution,and cultivation of polyploid species.Previous studies suggested the involvement of mitochondrial genome editing sites and copy number as well as mitochondrial functions in cotton fiber elongation.Whereas,with only a few mitogenomes assembled in the cotton genus Gossypium,our knowledge about their roles in cotton evolution and speciation is still scarce.To close this gap,here we assembled 20 mitogenomes from 15 cotton species spanning all the cotton clades(A–G,K,and AD genomes)and 5 cotton relatives using short and long sequencing reads.Systematic analyses uncovered a high level of mitochondrial gene sequence conservation,abundant sequence repeats and many insertions of foreign sequences,as well as extensive structural variations in cotton mitogenomes.The sequence repeats and foreign sequences caused significant mitogenome size inflation in Gossypium and its close relative Kokia in general,while there is no significant difference between the lint and fuzz cotton mitogenomes in terms of gene content,RNA editing,and gene expression level.Interestingly,we further revealed the specific presence and expression of two novel mitochondrial open reading frames(ORFs)in lint-fiber cotton species.Finally,these structural features and novel ORFs help us gain valuable insights into the history of cotton evolution and polyploidization and the origin of species producing long lint fibers from a mitogenomic perspective. | Yanlei Feng Yukang Wang Hejun Lu Jun Li Delara Akhter Fang Liu Ting Zhao Xingxing Shen Xiaobo Li James Whelan Tianzhen Zhang Jianping Hu Ronghui Pan | 2023 | The Crop Journal2023，11，6： | 0 |
| 20 | Cu/Co mixed hierarchical tubular heterostructures for alkaline supercapacitors显示文摘The hierarchical hollow structures of electrode materials s of supercapacitors is effective for the large specific surface area and fast ions and charge transports.Cu nanowires as self-engaged templates provide sites and paths for the nucleation and growth of the ZIF-67.Meanwhile,Cu atoms can disperse into metal organic frameworks(MOFs)to form Cu-Co mixed oxides and construct heterostructures.In this case,Cu nanowires are used as a template and an activated part to improve the internal electronic structures.The electrochemical performance can be improved due to these features.Herein,Cu nanowires and MOFs are combined via a mild and efficient approach to fabricate Cu-Co-O/CuO electrode materials.This electrode exhibits excellent electrochemical performance with a specific capacitance of 834.1 F g^(-1) at 1 A g^(-1).The assembled asymmetric supercapacitor(ASC)shows an ultra-high energy density of 40.7 W h kg^(-1) at a power density of 915 W kg^(-1) and a good capacitance retention after 8000 cycles in a 2 M KOH aqueous solution.The results otained in this work indicate a strategy of the combination of reactive metals with metal organic frameworks used as electrode materials for electrochemical supercapacitors. | Ruimei Yuan Hejun Li Xuemin Yin Peipei Wang Jinhua Lu Leilei Zhang | 2021 | Journal of Materiomics2021，7，3： | 0 |
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