Research Interest:

    New electrolytic capacitor, super capacitor, material and device of lithium ion battery, conducting polymer and its application, nanometer composite dielectric material and its application.


Selected Publications:

    1.  Wang J, Xu YL*, Sun XF, et al. Electrohemical capacitance of the composite of poly (3,4-ethylenedioxythiophene) and functionalized single-walled carbon nanotubes. Journal of Solid State Electrochemistry, 2008, 12(7-8): 947-952
    2.  Du XF, Xu YL*. Formation of Al2O3-BaTiO3 composite thin film to increase the specific capacitance of aluminum electrolytic capacitor. Thin Solid Films, 2008, 516(23): 8436-8440
    3.  Du XF, Xu YL*, Ma HX, et al. Low-temperature synthesis of bismuth titanate by an aqueous sol-gel method. Journal of the American Ceramic Society, 2008, 91(7): 2079-2082
    4.  Du XF, Xu YL*. Preparation and electrical properties of an anodized Al2O3-BaTiO3 composite film. Journal of the American Ceramic Society. 2008, 91(7): 2360-2363
    5.  Du XF, Xu YL*. Formation of Al2O3-Bi4Ti3O12 nanocomposite oxide films on low-voltage etched aluminum foil by sol-gel processing. Surface and Coating Technology, 2008, 202(10): 1923-1927
    6.  Du XF, Xu YL*. Formation of Al2O3-BaTiO3 nanocomposite oxide films on etched aluminum foil by sol-gel coating and anodizing. Journal of Sol-gel Science and Tehcnology, 2008, 45(1): 57-61
    7.  Li XF, Xu YL*. Enhanced cycling performance of spinel LiMn2O4 coated with ZnMn2O4 shell. Journal of Solid State Electrochemistry, 2008, 12(7-8): 851-+
    8.  Mao SC, Tao SH, Xu YL*, et al. Low propagation loss SiN optical waveguide prepared by optical low-hydrogen module. Optics Express, 2008, 16(25): 20809-20816
    9.  Wang J, Xu YL*, Chen X, et al. Capacitance properties of single wall carbon nanotube/polypyrrole composite films. Composite Science and Technology, 2007, 67(14): 2981-2985
    10. Wang J, Xu YL*, Sun XF, et al. Polypyrrole films electrochemically doped with dodecylbenzenesulfonate for copper protection. Journal of the Electrochemical Society, 2007, 154(8): C445-C450
    11. Wang J, Xu YL*, Chen X, et al. Properties of electropolymerized high density polypyrrole films. Acta Physica Sinica, 2007, 56(7): 4256-4261
    12. Wang J, Xu YL*, Sun XF, et al. Capacitance properties of porous polypyrrole thick films prepared electrochemically by multi-step polymerization. Acta Physico-Chimica Sinica, 2007, 23(6): 877-882
    13. Wang J, Xu YL*, Chen X, et al. Effect of doping ions on electrochemical capacitance properties of polypyrrole films. Acta Physico-Chimica Sinica, 2007, 23(3) : 299-304
    14. Wang J, Xu YL*, Chen X, et al. Electrochemical supercapacitor electrode material based on poly (3,4-ethylenedioxythiophene)/polypyrrole composite. Journal of Power Sources, 2007, 163(2): 1120-1125
    15. Du XF, Xu YL*, Ma HX, et al. Synthesis and characterization of bismuth titanate by an aqueous sol-gel method. Journal of the American Ceramic Society, 2007, 90(5): 1382-1385
    16. Li XF, Xu YL*. Spinel LiMn2O4 active material with high capacity retention. Applied Surface Science, 2007, 253(21): 8592-8596
    17. Li XF, Xu YL*. Novel method to enhance the cycling performance of spinel LiMn2O4. Electrochemistry Communications, 2007, 9(8): 2023-2026
    18. Xu YL*, Li XF, Ge LP, et al. Thin aluminum film improving the cycle performance of positive electrode of lithium ion battery. Applied Surface Science, 253(20): 8453-8457
    19. Xu YL*, Wang J, Sun W, et al. Capacitance properties of poly(3,4-ethylenedioxythiophene)/polypyrrole composites. Journal of Power Sources, 2006, 159(1): 370-373
    20. Yi WH, Xu YL*, Feng W, et al. Third-order nonlinear response of conjugared polymer coated carbon nanotubes. Acta Phyisca Sinica, 2006, 55(7): 3736-3742
    21. Yi WH, Feng W, Xu YL*, et al. Synthesis and third-order optical nonlinearities of conjugated polymer-bonded carbon nanotubes. Japanese Journal of Applied Physics, 2005, 44(5A): 3022-3027
    22. Xu YL*. Al2O3-(Ba0.5Sr0.5)TiO3 composite oxide films on etched aluminum foil by sol-gel coating and anodizing. Ceramics International, 2004, 30(7): 1741-1743
    23. Feng W, Yi WH, Xu YL*, et al. Synthesis of polyaniline-MWNT composite nano-tube and electrical and optical properties. Acta Physica Sinica, 2003, 52(5): 1272-1277
    24. Feng W, Xu YL*, Yi WH, et al. Effect of crystalline microstructure on the photophysical performance of poly/perylene composite films. Chinese Physics, 2003, 12(4): 426-432
    25. Feng W, Xu YL*, Cao M, et al. Enhancement of photoconductivity and quenching of luminescence in poly(2,5-dialkoxy-p-phenylenevinylene) upon perylene derivative doping. Proceedings of the 2001 IEEE international conference on solid dielectrics, 2001: 252-255

Authorized Patents:

1. Method for preparing electrode material of supercapacitor based on conducting polymer, PRC Invention Patent, ZL 200710017298.7
2. Method for preparing electrode material of supercapacitor based on the composite of conducting polymer and carbon nanotubes, PRC Invention Patent, ZL 200610105269.1
3. Method for preparing electrode material of supercapacitor based on the composite of conducting polymer and functionalized carbon nanotubes, PRC Invention Patent, ZL 200610105268.7
4. Method for producing solid chip electrolytic capacitor, PRC Invention Patent, ZL200510041690.6
5. Method for preparing anodic oxide film from titanium oxide/aluminum oxide composite with high dielectric constant, PRC Invention Patent, ZL 200510096131.5
6. Modification method to cathode material LiMn₂O₄ of lithium ion batteries, PRC Invention Patent, ZL 200510042800.0
7. Surface modification method of cathode active mass for secondary lithium battery, PRC Invention Patent, ZL 200510096132.X
8. Method for preparing anode foil in aluminum electrolytic capacitor, ZL20051004280.1
9. Process for preparing anode foil of aluminum electrolytic capacitor, PRC Invention Patent, ZL03114518.3
10. Process for preparing secondary lithium battery cathode material, PRC Invention Patent, ZL 03114477.2
11. Manufacture method of secondary lithium battery cathode material, PRC Invention Patent, ZL 03114478.0
12. Etching technique of aluminum foil anode of electrolytic capacitor, PRC Invention Patent, ZL 94118454. Direct economical benefit of three billion has been achieved from this patent
    

Applied Patents:

1. Process for preparing polypyrrole with high density for anticorrosion, PRC Invention Patent, ZL 200710017299.1
2. Process for preparing polypyrrole doped with large size anion for anticorrosion, PRC Invention Patent, ZL 200710017297.2
3. Method for preparing electrode material of supercapacitor based on conducting polymer composite, PRC Invention Patent, ZL 200510096110.3