Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics

Jinan, China

Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics

Jinan, China
SEARCH FILTERS
Time filter
Source Type

Li M.,University of Science and Technology of China | Li M.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | Li M.,University of Jinan | Han X.,University of Science and Technology of China | And 5 more authors.
Journal of Electronic Materials | Year: 2016

d-Methionine and chitosan have been used for fabrication of nitrogen/sulfur-codoped carbon materials by a hydrothermal process followed by carbonization at 750°C for 3 h. The as-prepared carbon materials showed enhanced electrochemical performance, combining electrical double-layer capacitance with pseudocapacitance owing to the doping with sulfur and nitrogen. The specific capacitance of the obtained carbon material reached 135 F g−1 at current density of 1 A g−1, which is much higher than undoped chitosan (67 F g−1). The capacitance retention of the carbon material was almost 97.2% after 5000 cycles at current density of 1 A g−1. With such improved electrochemical performance, the nitrogen/sulfur-codoped carbon material may have promising potential for use in energy-storage electrodes of supercapacitors. © 2016 The Minerals, Metals & Materials Society


Feng J.,University of Science and Technology of China | Feng J.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | He F.,University of Science and Technology of China | He F.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | And 4 more authors.
Green Processing and Synthesis | Year: 2016

As a green, safe and eco-friendly solvent, ionic liquids (ILs) have been widely used in organic syntheses. In this paper, polyamide-imides (PAIs) based on different chain length of amino acids were synthesized by two methods, i.e. in the presence of tetrabutyl ammonium bromide (TBAB) as IL and via conventional polycondensation. The obtained results have been compared. It was confirmed that by the polymerization method in the IL, the PAIs can get higher molecular weight and viscosity and better heat resistance and crystallinity after annealing treatment. All polymers showed higher tensile strength (122-134 MPa) and tensile modulus (2.4-3.0 GPa). Among them, the molecular weight of PAIs based on glycine was characterized by gel permeation chromatography. © 2016 Walter de Gruyter GmbH, Berlin/Boston.


Yao J.,Shandong Polytechnic University | Yao J.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | Liu W.,Shandong Polytechnic University | Liu W.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | And 6 more authors.
Designed Monomers and Polymers | Year: 2011

Three new optically active unsaturated amides monomers which could be polymerized were synthesized through the direct condensation between S-(+)-α-phenyl ethylamine and prop-2-enoyl chloride, 2-methyl-prop-2-enoyl chloride and undec-10-enoyl chloride, respectively. The resulted unsaturated amides were proven by means of 1H-NMR spectroscopy, FT-IR spectroscopy, elemental analyses and specific rotations. The polymerization of one of synthesized monomers, N-(1S-1-phenylethyl)-undec-10-enamide, is reported for the first time. © 2011 Koninklijke Brill NV, Leiden.


Li M.,University of Science and Technology of China | Li M.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | Li M.,University of Jinan | Li M.,Shandong University | And 3 more authors.
Journal of Solid State Electrochemistry | Year: 2016

Well-dispersed resorcinol-formaldehyde-based carbon spheres (RFCs) have been prepared by the polycondensation of resorcinol and formaldehyde with ammonia as catalyst and subsequent carbonization of the obtained polymer. In situ polymerization of the aniline occurred in the suspension of the RFC, and RFC was surrounded by the polyaniline (PANI) wires. The PANI and RFC hybrid network (PRFC) formed gradually. In a three-electrode mode, the specific capacitance (Csp) of PRFC reaches 315 F g−1 at a current density of 1 A g−1 in 2 M H2SO4, much higher than that of pure PANI (225 F g−1) and RFC (121.7 F g−1). Furthermore, the Csp of PRFC retains 80.0 % after 1000 charge-discharge processes at a current density of 5 Ag−1. The enhanced electrochemical performance of the PRFC came from its homogeneous three-dimensional hierarchical network structure, good electric conductivity of the PANI around the RFC, and the synergistic effect between the RFC and PANI. © 2016 Springer-Verlag Berlin Heidelberg


Chang C.,Shandong University of Technology | Yang X.,Shandong University of Technology | Yang X.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | Yang X.,University of Jinan | And 5 more authors.
Journal of Materials Science: Materials in Electronics | Year: 2016

Using polypyrrole (PPy) nanotubes as the substrate, the layered molybdenum disulfide (MoS2) nanosheets were wrapped on PPy nanotubes to form MoS2/PPy nanocomposites by a hydrothermal reaction. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images showed that MoS2 nanosheets coated uniformly on the surface of PPy nanotubes owing to the electrostatic force. The specific capacitance of the MoS2/PPy nanocomposites was high up to 307.5 F g−1, much higher than that of the pure PPy with specific capacitance of 106.3 F g−1 and MoS2 with specific capacitance of 138.5 F g−1 at a current density of 1.0 A g−1 in 1 M KCl electrolyte. And the special structure of MoS2/PPy nanocomposites electrode reduces the deformation during the charge–discharge process and thus improves the rate stability and electrochemical cycling stability of the electrode significantly. The specific capacitance retains 96.47 % after 1000 charge–discharge processes which provides potential as supercapacitors. © 2016 Springer Science+Business Media New York


Li M.,University of Science and Technology of China | Li M.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | Li M.,University of Jinan | Li M.,Shandong University | And 3 more authors.
Journal of Solid State Electrochemistry | Year: 2016

The homogeneous polyaniline–graphene oxide (PANI-GO) nanocomposites were facilely assembled with a redox system in which cumene hydroperoxide (CHP) and iron dichloride (FeCl2) acted as oxidant and reductant, respectively. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images showed that PANI scales coated uniformly on the surface of GO sheets owing to the synergistic effect between the PANI and GO. The obtained PANI-GO nanocomposites exhibited improved electrochemical performance as an electrode material for supercapacitors compared with the pure PANI. The specific capacitance of the PANI-GO nanocomposites was high up to 308.3 F g−1, much higher than that of the pure PANI with specific capacitance of 150 F g−1 at a current density of 1 A g−1 in 2 M H2SO4 electrolyte. The Raman and XPS results illustrated that enhanced electrochemical performance might be attributed to the π-π conjugation between the PANI and GO sheets. © 2016 Springer-Verlag Berlin Heidelberg


Li M.,Shandong University of Technology | Li M.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | Li M.,University of Jinan | Zhang Y.,Shandong University of Technology | And 7 more authors.
Journal of Materials Science: Materials in Electronics | Year: 2014

Polypyrrole (PPy) was synthesized on graphene (GN) sheets which was reduced from graphene oxide by microwave irradiation in N-methyl-2-pyrrolidinone (NMP) and dispersed very well in β-naphthalene sulfonic acid solution. Homogeneous polypyrrole/graphene (PGN) composites had been successfully prepared via an in situ emulsion polymerization method and showed better electrochemical performance including high specific capacitance, rate characteristic and cycling stability compared with polypyrrole/graphene oxide (PGO) composites. The NMP molecules entered into GN which was helpful for PPy deposition on the GN sheets evenly. The supercapacitive behaviors of the corresponding electrodes were estimated with cyclic voltammetry and galvanostatic charge/discharge measurements in 1 M KCl electrolyte and the results showed that the specific capacitance of PGN composites was up to 906 F g−1 at the current density of 0.2 A g−1, much higher than that of the PGO (704 F g−1) and PPy (430 F g−1). Its specific capacitance retains more than 91 % of its initial capacitance after 1,000 cycles at a high current density of 5 A g−1. The good electrochemical performance of PGN composites is mainly attributed to its uniform structure, the N doping, and the synergistic effects between the two components. © 2014, Springer Science+Business Media New York.


Li P.-W.,University of Jinan | Li R.-R.,University of Jinan | Liu D.-L.,University of Jinan | Min D.-D.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | And 2 more authors.
Modern Food Science and Technology | Year: 2013

Due to the biocompatibility and bioactivity, bioactive glasses is consider as a new type of carrier for enzymes immobilization. In this paper, the bioactive glasses was modified to be magnetic using the sol-gel approach and polyethylene glycol (PEG) and was used to immobilize glucose oxidase and catalase. Co-immobilization was much more better than individual immobilization of the two enzymes. The special activities and enzyme characterization were determined and the best medium was selected. Under the conditions of 0.4% glutaraldehyde, 1.5% moisture, and glucose oxidase: catalase of 1:2, the enzyme recovery of glucose oxidase reached 92.25%. In aqueous phase, the maximum enzyme recovery was only 72.18%. After 10 repeated use, the residue activities of the immobilized enzyme in organic solvent and aqueous phase were 67.30% and 44.33%, respectively.


Liu Y.,Shandong Provincial Key Laboratory Of processing and testing technology of glass and functional ceramics | Qiao C.,Shandong Provincial Key Laboratory Of processing and testing technology of glass and functional ceramics | Yao J.,Shandong Provincial Key Laboratory Of processing and testing technology of glass and functional ceramics | Yang W.,Shandong Provincial Key Laboratory Of processing and testing technology of glass and functional ceramics
Advanced Materials Research | Year: 2012

The relaxation behaviors of PS below T g and its variation trend along with aging time were studied by DSC, fluorescence spectrum and XRD. On the basis of DSC results, the kinetics of the volume and enthalpy relaxation process were analyzed, and the influence of the aging time on the relaxation behaviors were discussed. The results of fluorescence spectrum and XRD indicated the presence of the rearrangement of polymer chains in the physical aging of polystyrene. © (2012) Trans Tech Publications, Switzerland.


Li M.,Shandong University of Technology | Li M.,Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics | Li M.,University of Jinan | Yang L.,Shandong University of Technology
Journal of Materials Science: Materials in Electronics | Year: 2015

Intrinsic polypyrrole (PPy) flexible film was successfully prepared by chemical oxidation with methyl orange–FeCl3 reactive self-degradable template method when the molar ratio of FeCl3 to monomer was 0.5. Scanning electron microscopy and transmission electron microscopy images show that the obtained PPy film was composed with different size of nanotubes which diameter is about 50–60 nm and length is 5–6 μm. Electrochemical performance of PPy film was evaluated using cyclic voltammetry, galvanostatic charge/discharge tests and electrochemical impedance spectroscopy in 1 M KCl aqueous electrolyte. The specific capacitance of the electrodes made by the PPy film is high up to 576 F g−1 at a current density of 0.2 A g−1 and retains 82 % after 1000 charge–discharge processes at a current density of 3 A g−1. The excellent electrochemical performance provides wide application of PPy as supercapacitor materials. © 2015, Springer Science+Business Media New York.

Loading Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics collaborators
Loading Shandong Provincial Key Laboratory of Processing and Testing Technology of Glass and Functional Ceramics collaborators