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  1. Article ; Online: A kinetics mechanism of NO

    Li, Zehong / Zhang, Wei / Chen, Zhaohui / Ren, Zhaoying / Ning, Shuo / Li, Mengting

    The Science of the total environment

    2023  Volume 867, Page(s) 161519

    Abstract: ... ...

    Abstract NO
    Language English
    Publishing date 2023-01-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2023.161519
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Article ; Online: Mechanical Properties, Melting and Crystallization Behaviors, and Morphology of Carbon Nanotubes/Continuous Carbon Fiber Reinforced Polyethylene Terephthalate Composites.

    Qiao, Liang / Yan, Xu / Tan, Hongsheng / Dong, Shuhua / Ju, Guannan / Shen, Hongwang / Ren, Zhaoying

    Polymers

    2022  Volume 14, Issue 14

    Abstract: Carbon nanotube/continuous carbon fiber reinforced poly(ethylene terephthalate) (CNT/CCF/PET) composites are prepared by melt impregnating. The effects of CF and CNT content on the mechanical properties, melt and crystallization behaviors, and ... ...

    Abstract Carbon nanotube/continuous carbon fiber reinforced poly(ethylene terephthalate) (CNT/CCF/PET) composites are prepared by melt impregnating. The effects of CF and CNT content on the mechanical properties, melt and crystallization behaviors, and submicroscopic morphology of CNT/CCF/PET composites are studied. The tensile test results show that the increase of CF and the addition of appropriate amount of CNT improved the tensile strength and tensile modulus of the composites. When the content of CNT is 1.0 wt% and the content of CF is 56 wt%, the properties of the composites are the best, with tensile strength of 1728.7 MPa and tensile modulus of 25.1 GPa, which is much higher than that of traditional resin matrix composites. The results of dynamic mechanical analysis (DMA) show that the storage modulus of the composites increased with the increase of CF and CNT content. In particular, the addition of CNT greatly reduced the loss modulus of the composites. Morphological analysis show that the addition of CNT improved the fiber-matrix interface of the composite, which changes from fiber pull-out and fracture failure to fiber matrix fracture failure, and the fiber matrix interface is firmly bonded. In addition, there are polymer coated CNT protrusions on the surface of the fiber was observed. The results of differential scanning calorimetry (DSC) show that the melting temperature and crystallization temperature of the composites increased with the increase of CF content. The addition of CNT had little effect on the melting temperature of the composites, but it further improved the crystallization temperature of the composites. The effect of CNT content on the crystallization kinetics of the composites is studied. The non-isothermal crystallization kinetics of the composites is described by Jeziorny's improved Avrami equation. The results show that CNT has a great influence on the crystallization type of the composites. As a nucleating agent, CNT has obvious heterogeneous nucleation effect in the composites, which improves the crystallization rate of PET.
    Language English
    Publishing date 2022-07-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym14142892
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Effect of heat-treatment on the surface structure and electrochemical behavior of AlPO4-coated LiNi1/3Co1/3Mn1/3O2 cathode materials

    Wang, Jian-Hua / Guo, Yu-Zhong / Liu, Chang-Wei / Ren, Zhao-Ying / Wang, Yu

    Journal of materials chemistry A. 2013 Mar. 19, v. 1, no. 15

    2013  

    Abstract: The surface of LiNi1/3Co1/3Mn1/3O2 particles were modified by AlPO4. Influences of heat-treatment on coating were studied by X-ray diffraction (XRD) and thermal analysis. Electrochemical tests and electrochemical impedance spectroscopy (EIS) were ... ...

    Abstract The surface of LiNi1/3Co1/3Mn1/3O2 particles were modified by AlPO4. Influences of heat-treatment on coating were studied by X-ray diffraction (XRD) and thermal analysis. Electrochemical tests and electrochemical impedance spectroscopy (EIS) were conducted. The results show that AlPO4 can react with LiNi1/3Co1/3Mn1/3O2 and an aluminum-containing-spinel phase of M′1M2O4 (M = Ni, Co, Mn, M′ = Al) is formed at above 700 °C. The high surface content of aluminum is in favor of forming a stable solid electrolyte film (SEI) on the surface of LiNi1/3Co1/3Mn1/3O2 during the first-two-charge–discharge processes. NO3− from the coating process may have reacted with LiNi1/3Co1/3Mn1/3O2. The resultant decompose at the temperature of above 400 °C. Existence of NO3− in the cathode is harmful to its electrochemical properties. The LiNi1/3Co1/3Mn1/3O2 coated with 1 wt% AlPO4 delivers a high discharge capacity and shows excellent capacity retention at 55 °C/0.5 C.
    Keywords aluminum ; aluminum phosphate ; cathodes ; coatings ; cobalt ; dielectric spectroscopy ; electrochemistry ; electrolytes ; heat treatment ; manganese ; nickel ; nitrates ; temperature ; thermal analysis ; X-ray diffraction
    Language English
    Dates of publication 2013-0319
    Size p. 4879-4884.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2702232-8
    ISSN 2050-7496 ; 2050-7488
    ISSN (online) 2050-7496
    ISSN 2050-7488
    DOI 10.1039/c3ta00064h
    Database NAL-Catalogue (AGRICOLA)

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