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Study On The Ionic Conductivity Of Comb Polymer Electrolytes, Liming Ding
Study On The Ionic Conductivity Of Comb Polymer Electrolytes, Liming Ding
Journal of Electrochemistry
A comb polymer(CP350)with oligo-oxyethylene side chains was prepared from methyl vinyl ether/maleic anhydride copolymer.The ionic conductivity of CP350/LiAsF6 and CP350/LiPF6 complexes was studied as a function of temperature and[Li]/[EO]ratios.A equivalent circuit was given to interpret complex impedance spectra. At 25℃,the ionic conductivity maxima of the two systems are 1.38×10(-4),8.32×10(-5)S/cm respectively. The appearance of the conductivity maxima has been interpreted as being due to the effect of microviscosity on ion transport. lonic conduction displays non-Arrhenius behaviour.The temperature dependence of ionic conductivity was attributed mainly to the temperature dependence of charge carrier hopping,ion pairing and micro Brown motion of side chains.The larger …
A Study On Solid Polymer Electrolyte Fuel Cell, Hongfeng Xu, Ming Han, Baolian Yi, Xinge Zhang, Shanhai Ge
A Study On Solid Polymer Electrolyte Fuel Cell, Hongfeng Xu, Ming Han, Baolian Yi, Xinge Zhang, Shanhai Ge
Journal of Electrochemistry
Solid polymer electrolyte fuel cell(SPEFC)show promise of a high level of performance in the present fuel cell.In this paper,we report the method of SPEFC electrode preparation,and the effects of temperature,pressure and gas flow rate on the performance.