Papers by Author: Ling Wang

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Authors: Ling Wang, Jing Long Bu, R.V. Kumar, Yan Ruo Hong
Abstract: A SO2 sensor based on Na-b-Al2O3 interfaced with an auxiliary electrode of Na2SO4 formed in situ and a solid mixture of Fe3O4, Fe2O3, 3Na2O.5Fe2O3 as the reference electrode was developed. The sensor displayed a Nernstian response to changes in the partial pressure of SO2.
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Authors: Ling Wang, Fu Shen Li, Hui Zhu Zhou, Hui Xia, Mei Yang, Li Fen Li
Abstract: A new type of limiting current oxygen sensor which uses yttria (8%mol) stabilized zirconia (YSZ) as oxygen ion conducting solid electrolytes and dense La0.8Sr0.2FeO3 (LSF) as diffusion barrier was developed successfully. The oxygen sensor shows excellent performance at oxygen concentrations range of from 0 to 21%. The advantages of the sensor are simple construction, low cost and potential long term stability.
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Authors: Yin Lin Wu, Ling Wang, Fu Shen Li, Yan Qin Zhao
Abstract: A thick film type of limiting current oxygen sensor which uses yttria (8% mol) stabilized zirconia (YSZ) as oxygen ion conducting solid electrolytes and dense La0.8Sr0.2MnO3 (LSM) as diffusion barrier was developed successfully. The oxygen sensor showed excellent performance at oxygen concentrations ranging from 0 to 10 ppm. The advantages of the sensor are simple construction, low cost and potential long term stability.
263
Authors: Yin Lin Wu, Hai Yan Zhao, Lei Dai, Ling Wang
Abstract: Electrochemical sensors based on tubular yttria-stabilized zerconia (YSZ) with the perovskite-type oxide as a sensing-electrode (SE), which is prepared by sol-gel method, were fabricated and examined for NO2 detection in the temperature range 673~973K. The results show that La0.75Sr0.25Cr0.5Mn0.5O3, shows extreme sensitivity to NO2. The EMF varies linearly as a function of the concentration of NO2 (0~ 463 ppm) at 773K.
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Authors: Yin Lin Wu, Hai Yan Zhao, Ling Wang
Abstract: Electrochemical sensors based on tubular yttria-stabilized zerconia (YSZ) with the perovskite-type oxide as a sensing-electrode (SE), which is prepared by sol-gel method, were fabricated and examined for NO2 detection in the temperature range 400~700°C. The results show that La0.75Sr0.25Cr0.5Mn0.5O3(LSCM), shows extreme sensitivity to NO2. The EMF varies linearly as a function of the concentration of NO2 (0 ~ 463 ppm) at 500 °C.
109
Authors: Hui Zhu Zhou, Lei Dai, Yue Hua Li, Yin Lin Wu, Ling Wang, Yan Ruo Hong
Abstract: Mg ion conductors, MgAl2O4 and MgZr4(PO4)6, were prepared by solid state reaction. Their electrical properties were measured and their application in electrochemical sensors for on-line determination of Mg in molten Al in the refining process and alloying process was examined. The activation energies for Mg ion conduction in MgAl2O4 and MgZr4(PO4)6 are 2.08 eV and 1.7 eV, respectively. The sensors have been found to respond rapidly to the change of Mg content in molten aluminium around 1000 K.
265
Authors: Jing Wang, Chun Mei Wang, Ling Wang
Abstract: Li[Ni1/3Co1/3Mn1/3]O2 was synthesized by modified combustion method and effect of calcination temperature on characteristics was investigated. The cycle of Li[Ni1/3Co1/3Mn1/3]O2 was determined by electrochemical measurements, the microscopic structural features were investigated using Fourier transform infrared spectroscope(FTIR), Scanning Electron Microscopy (SEM), X-ray diffraction (XRD). The results show that the compound has layered structure with hexagonal lattice. With the increase of calcination temperature, the size of primary particle rises. The Li[Ni1/3Co1/3Mn1/3]O2 calcined at 900 oC shows excellent electrochemical performances with large reversible specific capacity of 152 mAhg-1 in the voltage range of 2.75-4.20 V.
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Authors: Yue Hua Li, Jing Zhu, Lei Dai, Ling Wang
Abstract: A novel sensitive pH sensor was reported based on a carbon paste electrode modified (CPEM) with perovskite-type Li0.31La0.56TiO3 (LLTO) and LLTO-xSrTiO3 (x =0.05~ 0.15) in order to investigate the influence of the doping in the sensor response. The carbon paste proves the ability of this perovskite to detect the variation of pH 2 -13. The LLTO-xSrTiO3 (x =010)-CPEM indicated that the best linear relationships. A variation of potential in different pH-buffers was obtained with a response maximum of 32.08 mV/pH unit at 25 C and 55.39 mV/pH unit at 70C for the better responding electrode.
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