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Träfflista för sökning "WFRF:(Zhu Zhigang) "

Sökning: WFRF:(Zhu Zhigang)

  • Resultat 1-6 av 6
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1.
  • Hu, Huiqing, et al. (författare)
  • Effects of composition on the electrochemical property and cell performance of single layer fuel cell
  • 2015
  • Ingår i: Journal of Power Sources. - 0378-7753 .- 1873-2755. ; 275, s. 476-482
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>In this study, the enhanced electrochemical performance of single layer fuel cells (SLFCs) based upon mixed ion and electron conductors is analyzed as a function of composition. We synthesize a series of Ce0.8Sm0.2O2-delta-Li0.3Ni0.6Cu0.07Sr0.03O2-delta (SDC-LNCS) with different weight ratios. The microstructure and morphology of the composite materials are characterized through X-ray diffraction (XRD), transmission electron microscope (TEM), and energy-dispersive X-ray spectrometer (EDS). Stability of the synthesized samples is evaluated by thermal gravity analysis (TGA). The SLFC with 6SDC-4LNCS exhibits a uniform distribution of the two compositions as well as demonstrates the highest power density of 312 mW cm-2 at 550 mu C. The performance is correlated to the balance of the conduction properties (ionic and electronic) of the functional SLFC layer. The results are a critical contribution to further development of this new energy transfer device.</p>
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2.
  • Mat, Mahmut D., et al. (författare)
  • Development of cathodes for methanol and ethanol fuelled low temperature (300-600 degrees C) solid oxide fuel cells
  • 2007
  • Ingår i: International journal of hydrogen energy. - 0360-3199 .- 1879-3487. ; 32:7, s. 796-801
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We have made extensive efforts to develop various compatible cathode materials for the ceria-carbonate composite (CCC) electrolytes to be used in direct alcohol fuelled solid oxide fuel cells (DLFC). The following cathode materials were mainly investigated: (i) BSCF (BaSrCoFeO) perovskite oxide; (ii) LFN (LaFeO-based oxides, e.g. LaFe0.8Ni0.2O3) perovskite oxides; (iii) bi- or tri-phase metal oxides with or without lithiation. A number of copper- and nickel-based anode composites were also developed for methanol and ethanol with maximum catalytic activity. The tri-metal oxide (CuNiOx-ZnO) cathode produced the maximum power density output of 500 mW/cm(-2) at 580 degrees C for DLFC with methanol operation.</p>
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3.
  • Qin, Haiying, et al. (författare)
  • Direct biofuel low-temperature solid oxide fuel cells
  • 2011
  • Ingår i: ENERGY & ENVIRONMENTAL SCIENCE. - 1754-5692. ; 4:4, s. 1273-1276
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>A low-temperature solid oxide fuel cell system was developed to use bioethanol and glycerol as fuels directly. This system achieved a maximum power density of 215 mW cm(-2) by using glycerol at 580 degrees C and produced a great impact on sustainable energy and the environment.</p>
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4.
  • Zhu, Bin, 1956-, et al. (författare)
  • A new energy conversion technology joining electrochemical and physical principles
  • 2012
  • Ingår i: RSC Advances. - 2046-2069. ; 2:12, s. 5066-5070
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We report a new energy conversion technology joining electrochemical and physical principles. This technology can realize the fuel cell function but built on a different scientific principle. The device consists of a single component which is a homogenous mixture of ceria composite with semiconducting materials, e.g. LiNiCuZn-based oxides. The test devices with hydrogen and air operation delivered a power density of 760mWcm(-2) at 550 degrees C. The device has demonstrated a multi-fuel flexibility and direct alcohol and biogas operations have delivered 300-500 mW cm(-2) at the same temperature. Device physics reveal a key principle similar to solar cells realizing the function based on an effective separation of electronic and ionic conductions and phases within the single-component. The component material multi-functionalities: ion and semi-conductions and bi-catalysis to H-2 or alcohol (methanol and ethanol) and air (O-2) enable this device realized as a fuel cell.</p>
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5.
  • Zhu, Bin, et al. (författare)
  • Solid oxide fuel cell (SOFC) using industrial grade mixed rare-earth oxide electrolytes
  • 2008
  • Ingår i: International journal of hydrogen energy. - 0360-3199 .- 1879-3487. ; 33:13, s. 3385-3392
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>This work reports on solid oxide fuel cells (SOFCs) based on abundant natural resources of industrial grade mixed rare-earth carbonates and composites. The materials possessed natural compositions and nano-scale particles. The electrolytes made from these materials were able to achieve excellent fuel cell performances, 300-800 mW/cm(2), at low temperatures (LT: 300-600 degrees C). Ionic transport mechanism, two-phase interface functions and composite role in electrolytes as well as resulted advanced fuel cell performances are discussed.</p>
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6.
  • Xiao, Kai, et al. (författare)
  • Photoelectrical characteristics of a C/CNx multiwalled nanotube
  • 2007
  • Ingår i: Advanced Functional Materials. - 1616-301X .- 1616-3028. ; 17:15, s. 2842-2846
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>A nanotube diode fabricated from a single C/CNx multiwalled nanotube exhibits a large photocurrent and a large photovoltage under illumination. The current-voltage (I-V) characteristics of the diode indicate a clear rectification effect. By comparing the I-V characteristics of C, CNx, and C/CNx nanotube diodes, we show that the rectifying characteristics of the C/CNx diode arises from the molecular junction formed at the C/CNx interface where the C and CNx segments are chemically bonded. External radiation photochernically generates electrons and holes in the C/CNx nanotube, producing a large photocurrent because of the influence of the strong electric field in the vicinity of the C/CNx junction. These unique photoresponsive characteristics of C/CNx, nanotube junction diodes points to potential applications such as photovoltaic devices and photodiodes.</p>
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