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Silicon (Si) is a promising anode material in advanced high-energy-density lithium-ion batteries (LIBs) due to its large theoretical capacity of 4200 mAh g-1, however, the high volume change cause the pulverization and unstable solid-state interface layer. How to maintain the structural integrity and high electronic conductivity during cycling is the major challenge for high-capacity Si anodes. Binder plays a key role in maintaining the mechanical integrity of electrodes in lithium-ion batteries. However, the existing binders typically exhibit poor stretchability or low conductivity at large strains, which are not suitable for high rate and high-capacity silicon (Si)-based anodes undergoing severe volume changes during cycling. Herein, we report a novel stretchable conductive polymer that possesses inherent high conductivity, excellent stretchablity and ductility. The polymer can be stretched up to 400% in volume and 250% in length without conductivity loss and mechanical fracture. The Si anode composed of the polymer and Si nanoparticles exhibited excellent cycle performance with a high discharge capacity (1500 mAh g-1 for over 700 cycles) as well as high areal capacity (5.13 mAh cm-2). The highly stretchable conductive binder provides a new perspective for designing next-generation high-capacity and high-power batteries. References: [1] L. Wang, T. Liu, et al. Adv. Funct. Mater. DOI: 10.1002/adfm.201704858. [2] L. Wang, K. Huo et al. Nanoscale 7 (2015) 13840. [3] K. Huo, L. Wang et al. J. Mater. Chem. A 4 (2016) 7585. [4] W. Zeng, L. Wang et al. Adv. Energy Mater. DOI: 10.1002/aenm.201702314.

The effect of different base asphalts on the styrene butadiene styrene (SBS) modification had been studied in this paper and the solubility parameter theory was used to predict its modification effect. The results showed that the compatibility between the base asphalt rich in aromatics and SBS was good. The closer the polarity of the two substances, the smaller the difference of their solubility parameter, the more easily they are miscible. Therefore, the solubility parameter between the modifier SBS and the base asphalt can be used to evaluate their compatibility. To find a suitable blender (or stabilizer) based on the solubility parameter model is one of the best methods to reduce the difference of the solubility parameter between SBS and the base asphalt and decreased the isolation of SBS in the polymer–asphalt mixture.

In this paper, the performances of several kinds of extreme-pressure anti-wear additives were evaluated. The produced machine oil-cutting fluid for band saw had been applied to the industry and its toxicity was tested. The results showed that the admixture of the compounds containing element sulfur and the compounds containing element phosphorous had better anti-wear performance. This kind of cutting fluid had good using performance and could be used more safely.

In this paper the aging processes of two penetration-grade paving asphalt which conform to the standard of Esson Company have been studied by rotation thin film oven (RTFO). The first order aging kinetic model has been established and some kinetics parameters were calculated. The relationship between pavement properties of asphalt and aging course was revealed. The intervention of oxygen in high temperature caused oxidation reactions, which changed the composition and structure of asphalt, the aging resistant performance of asphalt was weak, and the service performance went to bad.

In this paper the change of family composition of the paving asphalt, which conforms to the standard of Sinopec Q/SHR-004-1998, was studied under continuous heating and atmosphere at three different temperatures (150, 163, 180°C), at the same time, the changes of pavement performance were studied. The results showed that at three different aging temperatures saturated hydrocarbon contents did not obviously change after 20 hours on aging. The change of aromatic contents was different before and after 20 hours while resins and asphaltenes contents have changed noteworthily. After aging, resins decreased noteworthily, asphaltenes increased obviously, the composition and structure of asphalt were destroyed which had the pavement performance go bad. *Currently, he is studying for his Ph.D. at North-east University under supervisior Zhai Yu-Chun.

The family composition of Daqing heavy fraction oil and the latent content of lubricating oil by mass spectrography and slovent dewaxing methods were determined, and then compared with document data.The change of Daqing heavy distillate is discussed.The results show Daqing crude oil and its distillates have the trend to be heavier,but its heavy distillates are still suitable for catalytic stocks of heavy catalytic cracking and its residuum can be also used for the feed stocks and other wide uses. We hope the analysis results can provide scientific basis for refineries.

The characteristics of the high viscous crude from No. 1 Shuguang Zone of Liaohe Oil Field are similar to those of residue distillates of general crude such as high density(ρ 20=0·9977 g.cm-3),high viscidity υ 100= 1223·9 mm2.s-1) and high carbon/hydrogen ratio. This oil contains less wax, but rich in resin and asphalt, which belongs to low sulfur naphthene-base crude oil and can be used as feedstock to produce high paving asphalt. But now it is used as fuel after emulsificating. In order to make full use of this oil and resolve the problem of paving asphalt demand-supply, various paving asphalts conforming to GB50092-96 standard were produced by blending vacuum residue of the high viscous crude from No.l Shuguang Zone of Liaohe Oil Field and waste oil which is rich in aromatics and poor in wax. The laboratory test results show that modified paving asphalts have good low-temperature properties and antiaging feature.

Nb2O5 nanobelts are fabricated by a hydrothermal reaction, protonation and annealing. The UV detector of individual Nb2O5 nanobelt shows high selectivity and quantum-efficiency. Ag-Nb2O5 heterojunction synthesized via AgNO3 solution immersion and UV illumination exhibits enhanced photocatalytic activity and perfect antibacterial performance.

Conical and cylindrical core-shell TiO2/C and TiC/C nanofiber arrays have been fabricated. The electrochemical measures suggest that conical nanofibers are more electroactive than cylindrical nanofibers for the more effective exposure edge plane. The conical TiC/C shows better electrochemical property than TiO2/C as result of inner conductive core.

TiO2/C tube in tube nanocomposite was fabricated by anodic oxidization, hydrothermal reaction and successive annealing. This top open nanotube arrays with a conductive carbon layer and order pore structure offer a large effective surface area and a facility channel for electrolyte, which ensures the high capacitance and perfect long ability.

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