Effect of NaI/I2 mediators on properties of PEO/LiAlO2 based all-solid-state supercapacitors
作者： Yijing Yin , Juanjuan Zhou , Azzam N. Mansour , Xiangyang Zhou
DOI: 10.1016/J.JPOWSOUR.2011.02.079
关键词: Dielectric spectroscopy 、 Electrolyte 、 Nafion 、 Materials science 、 Inorganic chemistry 、 Capacitance 、 Lithium aluminate 、 Cyclic voltammetry 、 Separator (electricity) 、 Supercapacitor
摘要: Abstract NaI/I2 mediators and activated carbon were added into poly(ethylene oxide) (PEO)/lithium aluminate (LiAlO2) electrolyte to fabricate composite electrodes. All solid-state supercapacitors fabricated using the as prepared electrodes a Nafion 117 membrane separator. Cyclic voltammetry, electrochemical impedance spectroscopy, galvanostatic charge/discharge measurements conducted evaluate properties of supercapacitors. With addition mediators, specific capacitance increased by 27 folds up 150 F g−1. The with increases in concentration also reduced electrode resistance rendered higher electron transfer rate between mediator mediator. stability all-solid-state supercapacitor was tested over 2000 cycles.
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