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RISS 인기검색어
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- 저자 : X. CH. Zhu (검색결과 3 건)
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Mesoporous silica (MCM-41) effect on (PEO+LiAsF6) solid polymer electrolyte
Ch.V. Subba Reddy,G.P. Wu,C.X. Zhao,W. Jin,Q.Y. Zhu,W. Chen,모선일 한국물리학회 2007 Current Applied Physics Vol.7 No.6
Composite polymer electrolyte lms consisting of polyethylene oxide (PEO), LiAsF6 and mesoporous silica (MCM-41) with xedPEO/LiAsF6 = 90/10 but dierent weight percent ratios of MCM-41 were prepared using the solution casting method. The polymer elec-(PEO + LiAsF6) polymer electrolyte facilitates salt dissociation, enhances ion conductivity, and improves miscibility between organicand inorganic moieties. The scanning electron microscopy (SEM) photographs indicates the electrolytes are miscible and homogeneousup to 10 wt.% of MCM-41, and an optimized conductivity is found at this composition (10 wt.%). However, at higher weight ratios(>10 wt.%), the Li/MCM-41-rich domain developed, and the conductivity decreased with increasing mesoporous material. The electro-chemical performance of fabricated electrochemical cells of conguration Li/(PEO + LiAsF6 + MCM-41)/(MoO 3 + C + PTFE) wereinvestigated.
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Mesoporous silica (MCM-41) effect on (PEO+LiAsF<sub>6</sub>) solid polymer electrolyte
Subba Reddy, Ch.V.,Wu, G.P.,Zhao, C.X.,Jin, W.,Zhu, Q.Y.,Chen, W.,Mho, Sun-il Elsevier 2007 Current Applied Physics Vol.7 No.6
<P><B>Abstract</B></P><P>Composite polymer electrolyte films consisting of polyethylene oxide (PEO), LiAsF<SUB>6</SUB> and mesoporous silica (MCM-41) with fixed PEO/LiAsF<SUB>6</SUB>=90/10 but different weight percent ratios of MCM-41 were prepared using the solution casting method. The polymer electrolyte films were characterized using XRD, DSC, SEM and electrical impedance spectroscopy. In corporation of MCM-41 in a (PEO+LiAsF<SUB>6</SUB>) polymer electrolyte facilitates salt dissociation, enhances ion conductivity, and improves miscibility between organic and inorganic moieties. The scanning electron microscopy (SEM) photographs indicates the electrolytes are miscible and homogeneous up to 10wt.% of MCM-41, and an optimized conductivity is found at this composition (10wt.%). However, at higher weight ratios (>10wt.%), the Li/MCM-41-rich domain developed, and the conductivity decreased with increasing mesoporous material. The electrochemical performance of fabricated electrochemical cells of configuration Li/(PEO+LiAsF<SUB>6</SUB>+MCM-41)/(MoO<SUB>3</SUB>+C+PTFE) were investigated.</P>
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Performance prediction of transonic axial compressor based on streamline curvature method
J. F. Hu,X. CH. Zhu,H. OuYang,X. Q. Qiang,ZH. H. Du 대한기계학회 2011 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.25 No.12
The streamline curvature (SLC) method is still of great importance for modern compressor performance prediction. The models applied in it, such as minimum incidence, deviation and loss, affect prediction's accuracy directly. An improved SLC approach is introduced in this paper, which is developed based on the analysis and summary of predecessor's works. The improvement is embodied mainly in the incidence and loss, which is the result of a combination of the previous models and models’ revisions in order to consider the main effects for modern compressor cascade. A certain isolated stage axial transonic compressor is calculated by SLC method. The speed lines and span-wise aerodynamic parameters are compared with the experiment data to demonstrate the SLC approach presented in this paper.
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